Difference between revisions of "Agriculture"
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[http://weedcontrolfreaks.com/2016/03/everything-in-agriculture-is-a-trade-off/ Everything in Agriculture is a Trade-Off]
[http://weedcontrolfreaks.com/2016/03/everything-in-agriculture-is-a-trade-off/ Everything in Agriculture is a Trade-Off]
: Farming is complex. Just about every decision made on a farm will send ripple effects throughout the entire system; these decisions will influence the cost/benefit ratio of many future decisions. This complexity makes it difficult to make rapid changes, and is a major reason why many farmers tend to be pretty conservative in their farming decisions. Even if a farmer wants to try something new (a new technology, or a new crop, for example), that option may be precluded by decisions that were made last year, or even many years ago.
: Farming is complex. Just about every decision made on a farm will send ripple effects throughout the entire system; these decisions will influence the cost/benefit ratio of many future decisions. This complexity makes it difficult to make rapid changes, and is a major reason why many farmers tend to be pretty conservative in their farming decisions. Even if a farmer wants to try something new (a new technology, or a new crop, for example), that option may be precluded by decisions that were made last year, or even many years ago.
== Organic ==
== Organic ==
Latest revision as of 17:18, 15 January 2020
Food and Farm Discussion Lab has many discussions of agricultural issues.
- Farming is complex. Just about every decision made on a farm will send ripple effects throughout the entire system; these decisions will influence the cost/benefit ratio of many future decisions. This complexity makes it difficult to make rapid changes, and is a major reason why many farmers tend to be pretty conservative in their farming decisions. Even if a farmer wants to try something new (a new technology, or a new crop, for example), that option may be precluded by decisions that were made last year, or even many years ago.
- 1 Synthetic crops
- 2 Organic
- 3 Biodiversity
- 4 Biotechnology *
- 5 Pesticides
- 6 Conservation agriculture
- 7 Silvopasture / agro-forestry
- 8 Environmental impacts of meat v veg, different food sources
- 9 Localism / Leap Manifesto
- 10 Urban agriculture
- 11 agricultural pollution
- 12 Insects
- 13 Cotton
- 14 Wheat
- 15 cannabis
In a January 2020 documentary on UK Channel 4 environmental activist and journalist George Monbiot discussed the opportunity costs of not just animal but also arable agriculture compared to the carbon sequestration and biodiversity effects of rewilding, and how technology such as artificial meat, and Solar Foods' non-biologically created artificial flour, might allow us to greatly reduce humans' impact on the natural world.
The programme also discusses the pollution of rivers by run-off from farms, the killing of deer (which Monbiot participates in) to allow shrubs and trees to re-grow, rewilding of former farmland in the Netherlands, and claims for the achievements of an Oxfordshire Organic farmer.
The Stanford Study
Are Organic Foods Safer or Healthier Than Conventional Alternatives?: A Systematic Review Crystal Smith-Spangler, Margaret L. Brandeau, E. Hunter, J. Clay Bavinger, Maren Pearson, Paul J. Eschbach, Vandana Sundaram, Hau Liu, Patricia Schirmer, Christopher Stave, Ingram Olkin, Dena M. Bravata; Annals of Internal Medicine; 4 Sep 2012 [paywall]
- The published literature lacks strong evidence that organic foods are significantly more nutritious than conventional foods. Consumption of organic foods may reduce exposure to pesticide residues and antibiotic-resistant bacteria.
No Health Benefits from Organic Food Steven Novella; Science-Based Medicine; 5 Sep 2012
- Commentary on Stanford Study
Strategies for feeding the world more sustainably with organic agriculture Adrian Muller, Christian Schader, Nadia El-Hage Scialabba, Judith Brüggemann, Anne Isensee, Karl-Heinz Erb, Pete Smith, Peter Klocke, Florian Leiber, Matthias Stolze, Urs Niggli; Nature Communications; 14 Nov 2017
- Organic agriculture is proposed as a promising approach to achieving sustainable food systems, but its feasibility is also contested. We use a food systems model that addresses agronomic characteristics of organic agriculture to analyze the role that organic agriculture could play in sustainable food systems. Here we show that a 100% conversion to organic agriculture needs more land than conventional agriculture but reduces N-surplus and pesticide use. However, in combination with reductions of food wastage and food-competing feed from arable land, with correspondingly reduced production and consumption of animal products, land use under organic agriculture remains below the reference scenario. Other indicators such as greenhouse gas emissions also improve, but adequate nitrogen supply is challenging. Besides focusing on production, sustainable food systems need to address waste, crop–grass–livestock interdependencies and human consumption. None of the corresponding strategies needs full implementation and their combined partial implementation delivers a more sustainable food future.
New study shows that organic farming can contribute to the world food supply FiBL Press release; 14 Nov 2017
- A worldwide conversion to organic farming can contribute to a comprehensive and sustainable food system, if combined with further measures. Thus, it is important to reduce over-consumption of livestock products, to use less concentrated feed in livestock production and to avoid food waste. Such a food system has positive effects on important environmental aspects by curbing greenhouse gas emissions, reducing over-fertilisation and use of pesticides, and does not lead to a higher land use despite organic management. This was shown in a new study led by the Research Institute of Organic Agriculture FiBL, which has recently been published in the renowned scientific journal "Nature Communications".
Organic farming can feed the world — until you read the small print Mark Lynas; Cornell Alliance for Science; 22 Nov 2017
- A Europe-based research team made headlines last week with its conclusion that organic farming can feed the world after all. However, few people took the time to read the small print in their paper, which shows that the researchers' conclusion depends on several highly questionable assumptions.
- "A worldwide conversion to organic farming can contribute to a comprehensive and sustainable food system, if combined with further measures," read the lead of the press release issued by the Research Institute of Organic Agriculture, whose staffers — led by Adrian Mueller — made up most of the co-authors of the accompanying paper, “Strategies for feeding the world more sustainably with organic agriculture.”
- Mueller et al. use a food systems computer model to assess the environmental impacts of a theoretical conversion of world agriculture to 100 percent organic. This shows, based on estimates culled from the existing scientific literature, that global organic conversion would lead to a 16-33 percent increase in land use, with a corresponding 8-15 percent increase in worldwide deforestation.
- So how do the authors achieve their headline conclusion? By combining a worldwide conversion to organic agriculture with a heroic parallel worldwide conversion to vegetarianism, allowing them to assume (in some scenarios) a 100 percent reduction in land-area competition from animal production. This is combined with a similarly heroic 50 percent reduction in global food waste.
Composition differences between organic and conventional meat: a systematic literature review and meta-analysis Dominika Średnicka-Tober et al; British Journal of Nutrition; 18 Nov 2015
- Demand for organic meat is partially driven by consumer perceptions that organic foods are more nutritious than non-organic foods. However, there have been no systematic reviews comparing specifically the nutrient content of organic and conventionally produced meat. In this study, we report results of a meta-analysis based on sixty-seven published studies comparing the composition of organic and non-organic meat products. For many nutritionally relevant compounds (e.g. minerals, antioxidants and most individual fatty acids (FA)), the evidence base was too weak for meaningful meta-analyses. However, significant differences in FA profiles were detected when data from all livestock species were pooled. Concentrations of SFA and MUFA were similar or slightly lower, respectively, in organic compared with conventional meat. Larger differences were detected for total PUFA and n-3 PUFA, which were an estimated 23 (95 % CI 11, 35) % and 47 (95 % CI 10, 84) % higher in organic meat, respectively. However, for these and many other composition parameters, for which meta-analyses found significant differences, heterogeneity was high, and this could be explained by differences between animal species/meat types. Evidence from controlled experimental studies indicates that the high grazing/forage-based diets prescribed under organic farming standards may be the main reason for differences in FA profiles. Further studies are required to enable meta-analyses for a wider range of parameters (e.g. antioxidant, vitamin and mineral concentrations) and to improve both precision and consistency of results for FA profiles for all species. Potential impacts of composition differences on human health are discussed.
Higher PUFA and n-3 PUFA, conjugated linoleic acid, α-tocopherol and iron, but lower iodine and selenium concentrations in organic milk: a systematic literature review and meta- and redundancy analyses Dominika Średnicka-Tober et al; British Journal of Nutrition; 8 Jan 2016
- Demand for organic milk is partially driven by consumer perceptions that it is more nutritious. However, there is still considerable uncertainty over whether the use of organic production standards affects milk quality. Here we report results of meta-analyses based on 170 published studies comparing the nutrient content of organic and conventional bovine milk. There were no significant differences in total SFA and MUFA concentrations between organic and conventional milk. However, concentrations of total PUFA and n-3 PUFA were significantly higher in organic milk, by an estimated 7 (95 % CI −1, 15) % and 56 (95 % CI 38, 74) %, respectively. Concentrations of α-linolenic acid (ALA), very long-chain n-3 fatty acids (EPA + DPA + DHA) and conjugated linoleic acid were also significantly higher in organic milk, by an 69 (95 % CI 53, 84) %, 57 (95 % CI 27, 87) % and 41 (95 % CI 14, 68) %, respectively. As there were no significant differences in total n-6 PUFA and linoleic acid (LA) concentrations, the n-6:n-3 and LA:ALA ratios were lower in organic milk, by an estimated 71 (95 % CI −122, −20) % and 93 (95 % CI −116, −70) %. It is concluded that organic bovine milk has a more desirable fatty acid composition than conventional milk. Metaanalyses also showed that organic milk has significantly higher α-tocopherol and Fe, but lower I and Se concentrations. Redundancy analysis of data from a large cross-European milk quality survey indicates that the higher grazing/conserved forage intakes in organic systems were the main reason for milk composition differences.
The Organic False Dichotomy Steven Novella; Neurologica blog; 8 Oct 2012
- I don’t have any a-priori or ideological issue with any of the specific practices that fall under the “organic” rubric. I do have a problem with the fact that there is an organic rubric. In fact I think the USDA made a mistake in giving into pressure and creating their organic certification. At the time they tried to make it clear that “certified organic” said absolutely nothing about the product itself, only that certain rules and restrictions were followed in production. It was not an endorsement of organic farming, just a way to regulate the use of the term in labeling food. Unfortunately, it further solidified the organic false dichotomy.
Organic vs Conventional Meat and Milk Steven Novella, Science-Based Medicine; 17 Feb 2016
- Two recently published meta-analyses, one on meat and another on milk, conclude that levels of polyunsaturated fatty acids (PUFA) and omega-3 fatty acids are higher in the organic versions of both. This is being widely reported as evidence that organic meat and milk is healthier, but a closer look at these two studies shows a different picture.
Why I Don't Buy Organic, And Why You Might Not Want To Either Steven Savage; Forbes; 19 Mar 2016
- I don’t buy organic foods. In fact I specifically avoid doing so. It’s not my place to tell anyone else what to do, but I’d like to lay out three, seriously considered factors that have shaped my personal stance on organic:
- Informed confidence that we are safe buying “conventional” foods
- Recognizing that some of the best farming practices from an environmental perspective are not always allowed or practical under the organic rules
- An ethical problem with the tactics that some organic advocates and marketers employ which seriously misrepresents their “conventional” competition
On Farming, Animals, and the Environment Iisa Ruishalme; 24 Feb 2015
- (This piece was originally published in February 2015 and updated in April 2016.) In a three-part series of posts, I will offer my response to the criticism posted on the comments section of the Skepti Forum Blog by Rob Wallbrigde (who blogs over at The Fanning Mill). I thank him for his interest in civil debate, and for providing me with a detailed 6-point list of issues he saw with my piece, making this discussion possible. I will go into more detail on the aspects of 1) nutritional content, 2) animal welfare, 3) pesticides, 4) environmental impact, 5) yield differences, and 6) the origins of organic farming.
KOALA Birth Cohort Study
Etiology of atopy in infancy: the KOALA Birth Cohort Study Kummeling I1, Thijs C, Penders J, Snijders BE, Stelma F, Reimerink J, Koopmans M, Dagnelie PC, Huber M, Jansen MC, de Bie R, van den Brandt PA.; Pediatr Allergy Immunol. ; Dec 2005
- The aim of the KOALA Birth Cohort Study in the Netherlands is to identify factors that influence the clinical expression of atopic disease with a main focus on lifestyle (e.g., anthroposophy, vaccinations, antibiotics, dietary habits, breastfeeding and breast milk composition, intestinal microflora composition, infections during the first year of life, and gene-environment interaction). The recruitment of pregnant women started in October 2000. First, participants with 'conventional lifestyles' (n = 2343) were retrieved from an ongoing prospective cohort study (n = 7020) on pregnancy-related pelvic girdle pain. In addition, pregnant women (n = 491) with 'alternative lifestyles' with regard to child rearing practices, dietary habits (organic, vegetarian), vaccination schemes and/or use of antibiotics, were recruited through organic food shops, anthroposophic doctors and midwives, Steiner schools, and dedicated magazines.
KOALA fact sheet (pdf)
Consumption of organic foods and risk of atopic disease during the first 2 years of life in the Netherlands Ischa Kummeling, Carel Thijs, Machteld Huber, Lucy P. L. van de Vijver, Bianca E. P. Snijders, John Penders, Foekje Stelma, Ronald van Ree, Piet A. van den Brandt, Pieter C. Dagnelie; British Journal of Nutrition; 2008
- We prospectively investigated whether organic food consumption by infants was associated with developing atopic manifestations in the first 2 years of life. The KOALA Birth Cohort Study in the Netherlands (n 2764) measured organic food consumption, eczema and wheeze in infants until age 2 years using repeated questionnaires. Diet was defined as conventional (,50 % organic), moderately organic (50 –90 % organic) and strictly organic (.90 % organic). Venous blood samples taken from 815 infants at 2 years of age were analysed for total and specific IgE. Multivariate logistic regression models were fitted to control for potential confounding factors. Eczema was present in 32 % of infants, recurrent wheeze in 11 % and prolonged wheezing in 5 %. At 2 years of age, 27 % of children were sensitised against at least one allergen. Of all the children, 10 % had consumed a moderately organic diet and 6 % a strictly organic diet. Consumption of organic dairy products was associated with lower eczema risk (OR 0·64 (95 % CI 0·44, 0·93)), but there was no association of organic meat, fruit, vegetables or eggs, or the proportion of organic products within the total diet with the development of eczema, wheeze or atopic sensitisation. Further studies to substantiate these results are warranted.
Organic milk may help babies beat allergies Rebecca Smithers; The Guardian; 9 Nov 2007
- Mothers who drink organic milk during pregnancy and while breastfeeding can help their babies beat eczema, asthma and related allergies, according to ground-breaking research. The study suggests the conditions can also be kept at bay if children drink organic milk themselves. Researchers conclude that "the consumption of organic dairy products, within the context of an organic diet, is associated with the ... reduced incidence of eczema".
The Lower Productivity Of Organic Farming: A New Analysis And Its Big Implications Steven Savage; Forbes; 9 Oct 2015
- The productivity of organic farming is typically lower than that of comparable “conventional” farms. This difference is sometimes debated, but a recent USDA survey of organic agriculture demonstrates that commercial organic in the U.S. has a significant yield gap. I compared 2014 survey data from organic growers with overall agricultural yield statistics for that year on a crop by crop, state by state basis. The picture that emerges is clear – organic yields are mostly lower. To have raised all U.S. crops as organic in 2014 would have required farming of one hundred nine million more acres of land. That is an area equivalent to all the parkland and wildland areas in the lower 48 states or 1.8 times as much as all the urban land in the nation. As of 2014 the reported acreage of organic cropland only represented 0.44% of the total, but if organic were to expand significantly, its lower land-use-efficiency would become problematic. This is one of several reasons to question the assertion that organic farming is better for the environment.
Commercial Crop Yields Reveal Strengths and Weaknesses for Organic Agriculture in the United States Andrew R. Kniss , Steven D. Savage, Randa Jabbour; PLOS One; 23 Aug 2016
- Land area devoted to organic agriculture has increased steadily over the last 20 years in the United States, and elsewhere around the world. A primary criticism of organic agriculture is lower yield compared to non-organic systems. Previous analyses documenting the yield deficiency in organic production have relied mostly on data generated under experimental conditions, but these studies do not necessarily reflect the full range of innovation or practical limitations that are part of commercial agriculture. The analysis we present here offers a new perspective, based on organic yield data collected from over 10,000 organic farmers representing nearly 800,000 hectares of organic farmland. We used publicly available data from the United States Department of Agriculture to estimate yield differences between organic and conventional production methods for the 2014 production year. Similar to previous work, organic crop yields in our analysis were lower than conventional crop yields for most crops. Averaged across all crops, organic yield averaged 80% of conventional yield. However, several crops had no significant difference in yields between organic and conventional production, and organic yields surpassed conventional yields for some hay crops. The organic to conventional yield ratio varied widely among crops, and in some cases, among locations within a crop. For soybean (Glycine max) and potato (Solanum tuberosum), organic yield was more similar to conventional yield in states where conventional yield was greatest. The opposite trend was observed for barley (Hordeum vulgare), wheat (Triticum aestevum), and hay crops, however, suggesting the geographical yield potential has an inconsistent effect on the organic yield gap.
Just another organic yield comparison? Andrew Kniss; Biology Fortified; Aug 2016
- Today, PLOS ONE has published a paper that I co-wrote with Randa Jabbour and Steve Savage titled “Commercial crop yields reveal strengths and weaknesses for organic agriculture in the United States.” In this paper, we describe our analysis of USDA data to compare organic and conventional crop yield data for 25 different crops. But is this just another organic yield vs conventional comparison for partisans to throw at each other in debates? We hope not. We’d prefer to throw that “debate” out the window – and instead focus on where each form of agriculture is doing best and start a conversation about how we can improve them all by learning from each other.
No. Organic Yields Are Not Close to Conventional. Plus: Using Land is an Environmental Impact Marc Brazeau; Food and Farm Discussion Lab; 16 Dec 2016
- The largest study done to date comparing the yields between organic and conventional farming was published in the Proceedings of the Royal Society in 2015–“Diversification practices reduce organic to conventional yield gap“. The authors put together a large data set and compared the yields between the two approaches and the effects of a wide range of variables. The paper was met with a wide round of applause among foodies and organic activists.
- The idea of organic farming is very appealing, and many people hope for evidence showing only small differences between organic yields and those of conventional farming might lead to wider adoption of organic. This hope seemed to gain some momentum in the coverage of the new paper. The problem is that the study’s conclusions don’t match its findings. This contributes to a continuing distortion in the public debate over what constitutes sustainable agriculture. Misleading research conclusions become a major distraction from meeting the very real challenge of increasing the sustainability of modern farming.
National Organic Action Plan: From the Margins to the Mainstream — Advancing Organic Agriculture in the U.S. Roger Blobaum, Lisa J. Bunin, Lynn Coody , Elizabeth Henderson, Liana Hoodes, Michael Sligh, Harriet Behar, Faye Jones, Mark Lipson, Jim Riddle; Jan 2010
- This National Organic Action Plan (NOAP) represents the culmination of five years of meetings that engaged diverse stakeholders in envisioning the future of organic and in building strategies for realizing our collective vision. It calls for the creation of an expanded organic policy agenda for the next decade and beyond that reflects the broad social, environmental, and health values of the organic movement and the associated benefits that organic food systems afford society. The goal of the NOAP Project is to establish organic as the foundation for food and agricultural production systems across the United States.
The organic industry's war on breastfeeding We love GMOs and Vaccines; 10 Apr 2016
- Organic industry attacks Prof Shelley McGuire of Washington State University for debunking glyphosate in breast milk scare
Organic and Biodynamic Management Effects on Soil Biology L. Carpenter-Boggs, A. C. Kennedy and J. P. Reganold; Soil Science of America journal; 12 Aug 1999
- Biodynamic agriculture is a unique organic farming system that utilizes, in addition to the common tools of organic agriculture, specific fermented herbal preparations as compost additives and field sprays. The objective of this work was to determine whether biodynamic compost or field spray preparations affect the soil biological community in the short term, beyond the effects of organic management. Four fertilizer options: (i) composted dairy manure and bedding (organic fertilization), (ii) the same material composted with biodynamic compost preparations, (iii) mineral fertilizers, and (iv) no fertilizer were investigated with and without the biodynamic field spray preparations. Both biodynamic and nonbiodynamic composts increased soil microbial biomass, respiration, dehydrogenase activity, soil C mineralized in 10 d (MinC), earthworm (Lumbricus terrestris) population and biomass, and metabolic quotient of respiration per unit biomass (qCO2) by the second year of study. No significant differences were found between soils fertilized with biodynamic vs. nonbiodynamic compost. Use of biodynamic field sprays was associated with more MinC and minor differences in soil microbial fatty acid profiles in the first year of study. There were no other observed effects of the biodynamic preparations. Organically and biodynamically managed soils had similar microbial status and were more biotically active than soils that did not receive organic fertilization. Organic management enhanced soil biological activity, but additional use of the biodynamic preparations did not significantly affect the soil biotic parameters tested.
The list of organic pesticides approved by the USDA AG DAILY; 24 Apr 2018
- While much about modern farming techniques center around the use of synthetic pesticides (a catch-all term that includes herbicides, insecticides, and fungicides) on large acreage, organic producers of all sizes also use a variety of chemicals to control weeds and bugs on their farms. This article contains a list of organic pesticides approved by the United States Department of Agriculture for use on non-conventional farms.
- The selections about which substances are allowed under the USDA’s National Organic Program are made by a board that includes organic growers, handlers, retailers, environmentalists, scientists, USDA-accredited certifying agents, and consumer advocates. Contrary to popular belief, pesticides approved for use on organic farms do include some synthetic substances, though the vast majority are natural toxins. That said, it should be clear that not all natural toxins are permitted — for example, strychnine and arsenic are natural but not allowed to be used in organic farming.
- Of course, genetic engineering is not allowed in organic production. To meet the USDA organic regulations, farmers and processors must show they aren’t using GMOs (in this case, meaning high-tech modern plant breeding techniques) and that they are protecting their products from contact with prohibited substances from farm to table.
- Just because a pesticide product is natural doesn’t mean it is less toxic than it’s synthetic counterpart. The dose, frequency of application, and mode of action all contribute to toxicity, and the severity is determined by the United States Environmental Protection Agency.
- Buying organic food to avoid pesticides? You may want to reconsider Steve Savage; Genetic Literacy Project; 10 Mar 2017
- Organic Might Not Mean What You Think It Means Steven Savage; Forbes; 6 Mar 2017
- Organic might not mean what you think it means. Consider recent data generated as part of the USDA’s Pesticide Data Program (PDP) — This isn’t surprising information. It echoes results from previous PDP testing and with more comprehensive testing of organic samples in 2001-11 by the USDA and 2011-13 by the Canadian Food Inspection Agency. What is interesting is that while the incidence of residue detection is somewhat lower for organic, the very low levels of chemicals found are quite similar to the low levels detected on conventional samples. The 2015 PDP study found residues of 68 different pesticides, pesticide metabolites, or plant growth regulators on organic fruits and vegetables.
Swedish co-op pesticide advert
The Company Behind The Viral 'Organic Effect' Video Is Getting Sued For Misleading The Public Kavin Senapathy; Forbes; 2 Jun 2016
Wine / Copper Sulphate
The Great Organic Grape Scam World Of Fine Wine; 29 Oct 2015
- The producers are in on the joke, and the certifying organizations are in on the joke, and they implicitly nudge and wink at each other. Neither of them is really in it for the money. This is not a conventional rip-off. They are both just satisfying the demand created by a consumer base that is misinformed, or intellectually lazy, or just wants to feel good about what it is drinking and is looking for a quick ladybug fix. You get what you ask for, because it's a consumer driven marketplace. Organic wine will almost certainly do you no harm (excessive quantities obviously excepted), but neither is it any better for you or for the planet than most non-organic wine. It won't taste any better or any worse probably, but then again you might not be able to trust the label anyway.
French winemaker drops organic status for ‘better treatments’ Jane Anson; Decanter; 26 Jan 2016
- A winemaker in the Vaucluse has become the latest producer to withdraw his wine from organic certification, citing his concerns over the environmental sustainability of organic winemaking.
- ‘I will reduce the use of copper build-up in the soils by changing my treatment programme to one that is more balanced between organic and synthesized products,’ said Vinceni. ‘The amount of oil used for tractors will also be halved, as I will not need to apply the treatments so regularly, so I will be lowering my carbon footprint’.
Winemakers drop organic status to support environment Andrew Porterfield; Genetic Literacy Project; 13 Mar 2016
- a number of winemakers, particularly in France, are dropping their organic status, partly because of regulatory restrictions, but more because of increasing concerns about sustainability and the environment. Domaine de Fondrèche in Mazan, under the French appellation of Côtes de Ventoux, just announced that it planned to withdraw its organic certification, which it had been growing wines under since 2009. The winery cited copper buildup in its fields, the result of using copper sulfate, one of a number of pesticides allowed by organic certifiers around the world (including the French Ecocert, as well as the USDA’s National Organic Program).
Review of impacts on soil biota caused by copper residues from fungicide application Lukas Van-Zwieten, Graham Merrington and Melissa Van-Zwieten; The Regional Institute online publishing; 2004?
- Unlike most other agricultural chemicals, a significant weight of evidence exists that copper based fungicides have a long-term impact on a wide range of soil biota. Effects can occur at relatively low Cu concentrations and influence a number of soil processes including microbial activity, earthworm activity and bioturbation. In most soils, copper residues are likely to remain indefinitely, and will continue to influence the health of the soil. This manuscript reviews Australian and International data on the effects of copper based fungicides on soil health, and the implications for future land management.
The accumulation of copper in a New Zealand orchard soil R.K. Morgan & H. Johnston; Journal of the Royal Society of New Zealand; 1991
- Overseas research has demonstrated that high concentrations of copper can build up in orchard soils as a result of the use of copper-based fungicide sprays. However, there appear to be no published estimates of copper accumulation in New Zealand orchard soils. In this study, soil and grass samples were taken from an orchard in North Otago, and from a nearby pasture site, to assess the accumulation of copper derived from fungicide sprays. The mean total copper content of the orchard soil was 100 µg/g (±SD 46.80 µ/g), compared with the pasture site with 32.38 (µ/g (± 0.94 (µ/g). The grass samples from the orchard had a mean total copper concentration of 19.98 µ/g (± 17.18 µ/g), while the corresponding figure for the pasture grass samples was 6.71 µ/g (+ 2.19 µ/g). We conclude that, after only 16 years of spraying, the use of copper-based fungicides has resulted in significantly higher concentrations of copper in the orchard soil, compared with the nearby pasture soil. The mean concentration is approaching levels at which some plants can show signs of toxic effects, and the implications of the use of old orchard soils, which might contain substantial concentrations of accumulated copper, for other purposes are discussed.
Copper contamination of soil and vegetation in coffee orchards after long-term use of Cu fungicides J.Ø. Loland, B.R. Singh; Nutrient Cycling in Agroecosystems; Jul 2004 (paywalled)
- The repeated use of Cu fungicides to control coffee berry disease can result in increased Cu content in soils and vegetation and thus raising the pollution levels and a concern for potential effects on human health. Therefore a field survey of coffee orchards of the Kilimanjaro and Arusha regions of Tanzania, where Cu fungicides are frequently used, was conducted to determine the possible Cu contamination of soils and vegetation. Soil samples were collected from 0–5, 5–15 and 15–30 cm depth at a distance of 0.5 m from the trunk of coffee trees. Plant leaf samples of beans and maize crops intercropped with coffee trees as well as leaves of coffee trees, were also collected at the same time and places. Soil and plant samples were collected both from small farms and commercial estates. Copper in the soil samples was extracted with CaCl2 (CCu), whereas for the total Cu, samples were digested with aqua regia (HNO3 and HCl(1:3) (ACu)). Plant samples were drying ashed and digested with HNO3. Copper concentration in the extracted and digested solutions was determined with atomic absorption spectrophotometry. A significant Cu enrichment of the soils was observed and the Cu concentration in the 0–5 cm soil depth was about three times higher than in the 15–30 cm depth. A large variability in the soil Cu concentration between fields of the same farm and within the same orchard was observed. The differences in the total Cu concentration (ACu) between small farms and commercial estates were not statistically significant, but the extractable Cu (CCu) was higher and soil pH was lower in the estates of the Kilimanjaro region than at small farms. The soil organic carbon (SOC) content increased significantly with increasing altitudes, and it was also higher on small farms than on commercial estates. The SOC content showed a close and positive correlation with total Cu. At soil pH below 5.3, the CCu fraction increased steeply. Bean plants from coffee fields showed a high concentration of Cu, suggesting a possible Cu toxicity problem in bean plants. Coffee leaves also showed extremely high Cu concentration.
Organic v. conventional
Sorry—organic farming is actually worse for climate change James Temple; MIT Technology Review; 22 Oct 2019
- Organic practices can reduce climate pollution produced directly from farming – which would be fantastic if they didn’t also require more land to produce the same amount of food.
- Clearing additional grasslands or forests to grow enough food to make up for that difference would release far more greenhouse gas than the practices initially reduce, a new study in Nature Communications finds.
- Other recent research has also concluded that organic farming produces more climate pollution than conventional practices when the additional land required is taken into account. In the new paper, researchers at the UK’s Cranfield University took a broad look at the question by analyzing what would happen if all of England and Wales shifted entirely to these practices.
- The good news is it would cut the direct greenhouse-gas emissions from livestock by 5% and from growing crops by 20% per unit of production. The bad news: it would slash yields by around 40%, forcing hungry Britons to import more food from overseas. If half the land used to meet that spike in demand was converted from grasslands, which store carbon in plant tissues, roots, and soil, it would boost overall greenhouse-gas emissions by 21%.
- Among other things, organic farming avoids the use of synthetic fertilizers, pesticides, and genetically modified organisms, all of which can boost the amount of crops produced per acre. Instead, organic farmers rely on things like animal manure and compost, and practices such as crop rotation, which involves growing different plants throughout the year to improve soil health.
- The study notes that these biological inputs produce fewer emissions than nitrogen-based synthetic fertilizers, notably including the highly potent greenhouse gas nitrous oxide. Separately, the use of manure and longer crop rotations can increase the amount of carbon stored in soil.
- The emissions impact of the meat, milk, and eggs produced from organically raised livestock is more complicated. On the one hand, emissions can increase because animals don’t plump up as fast without hormones, supplements, and conventional feed. That, for instance, grants cattle longer lives in which to belch out methane, another especially powerful greenhouse gas. On the other, allowing animals to spend more of their lives grazing on open grasslands may stimulate additional plant growth that captures more carbon dioxide, while cutting emissions associated with standard feeds.
- But the bigger problem, for both crops and livestock, is that these practices end up requiring a lot more land to produce the same amount of food.
- After all, the whole point of synthetic fertilizer is it boosts crop yields, by providing a “fixed” form of nitrogen that promotes plant growth. The legumes that organic farmers have to rotate in to help convert nitrogen into more reactive compounds in the soil end up cutting deeply into other food crops they could otherwise grow, the study notes.
- Specifically, the switch to 100% organic practices would require 1.5 times more land to make up for the declines, which would add up to nearly five times more land overseas than England and Wales currently rely on for food. That difference is amplified by the fact that the UK’s agricultural system produces particularly high yields compared with other parts of the world.
- The study found larger effects than some earlier papers. Notably, a 2012 meta-analysis in Nature determined that organic farming yields are between 5% and 34% lower than those from conventional agriculture, depending on the specific crops and practices. In addition, a 2017 Nature Communications study estimated that switching to organic farming would increase land use by only 16% to 33%.
- By evaluating the entire farming system of England and Wales, the new study helps to address some of the criticisms of earlier organic emissions assessments, which were often limited to specific farms or crops, says Dan Blaustein-Rejto, associate director of food and agriculture at the Breakthrough Institute, a think tank that promotes technology solutions to environmental challenges.
- “Looking at the farm scale doesn’t really tell you what a large-scale transition to organic would look like,” he says. “Only a study like this, that takes a system-wide perspective, really does.”
- The world does need to find ways to cut the emissions and environmental pollution from synthetic fertilizers. But the trick is to clean up these practices in ways that don’t require converting more land to agriculture, or forcing large parts of the world to go hungry.
- Among other paths, a number of researchers and startups are trying to develop novel agricultural inputs that could cut emissions without reducing yields, crops that take up more of the nitrogen in soil, and various meat and milk alternatives.
Why small, local, organic farms aren’t the key to fixing our food system Tamar Haspel; Washington Post; 22 Sep 2017
- The food movement has a problem: It’s right about what’s wrong with our system, but wrong about how to fix it.
- Buy fresh, buy local. Support the small, diverse, organic (or organic-ish) farm that supplies the farmers market and local restaurants with fresh vegetables. And that’s a great idea; local agriculture brings a host of benefits, from delicious strawberries to a much-needed reminder that food has to come from somewhere.
- But it cannot fix that chemical-intensive system that crowds out biodiversity, depletes the soil, pollutes the water, etc. And that’s not a lack of confidence in, or enthusiasm for, that kind of small farm. It’s simply a recognition that there are economic, logistic, topographical and even arithmetic reasons that those farms can only be a small slice of a reimagined, responsible, food system. There are at least four reasons:
- They don’t grow the right stuff.
- The crops these farms grow are fruits and vegetables, and, even if we all eat a produce-rich diet, fruits and vegetables cannot be more than a sliver of our agricultural system.
- They can’t grow the right stuff.
- The reason small, local, diverse farms grow vegetables (and sometimes livestock) is that those are high-margin products. The crops that carpet the vast swaths of the Midwest cannot be successfully grown small and local, because you need economies of scale to make those crops profitable. What’s great about staple crops such as oats, lentils, barley and, yes, corn and soy is that they produce huge amounts of nutritious, affordable food per acre.
- The land is in the wrong place.
- Look at a chart where the cropland is and where the people are. They don’t match. Take the Northeast (from Maine to the District): It’s got 3 percent of the cropland but 20 percent of the population. By contrast, the northern plains (the Dakotas, Kansas and Nebraska) have 24 percent of the land but 2 percent of the population.
- In most parts of the country, local food is available only for a limited season. This is not just a problem with an image of American agriculture as a patchwork of small local farms; it’s one of the key reasons that the crops grown on the large farms — the grains and legumes — are, as they always have been, the backbone of the human diet. They are storable.
"UN calls for small-scale organic farming"
Trade and Environment Review 2013 "Wake up before it is too late: Make agriculture truly sustainable now for food security in a changing climate" United Nations Conference on Trade and Development; 18 Sep 2013
- Developing and developed countries alike need a paradigm shift in agricultural development: from a "green revolution" to a "truly ecological intensification" approach. This implies a rapid and significant shift from conventional, monoculture-based and high external-input-dependent industrial production towards mosaics of sustainable, regenerative production systems that also considerably improve the productivity of small-scale farmers. We need to see a move from a linear to a holistic approach in agricultural management, which recognizes that a farmer is not only a producer of agricultural goods, but also a manager of an agro-ecological system that provides quite a number of public goods and services (e.g. water, soil, landscape, energy, biodiversity, and recreation) UNCTAD's Trade and Environment Review 2013 (TER13) contends.
- TER13 highlights that the required transformation is much more profound than simply tweaking the existing industrial agricultural system. Rather, what is called for is a better understanding of the multi-functionality of agriculture, its pivotal importance for pro-poor rural development and the significant role it can play in dealing with resource scarcities and in mitigating and adapting to climate change. However, the sheer scale at which modified production methods would have to be adopted, the significant governance issues, the power asymmetries' problems in food input and output markets as well as the current trade rules for agriculture pose considerable challenges.
Myth: UN Calls for Small-Scale Organic Farming Iida Ruishalme; Thoughtscapism; 21 Sep 2015
- Up till a few years ago, I used to make the natural assumption that organic farming must be better for the environment. Since then I realised that I should be relying on scientific evidence, not merely assumptions. On several occasions I’ve asked people (scientists, organic farmers and supporters) to point me in the direction of evidence on the environmental impacts and sustainability of organic farming. So far that quest hasn’t been very fruitful – I haven’t learned of many scientific papers that would really support that view.
- What I have frequently been referred to are a few different kinds of documents instead. The United Nations Conference on Trade and Development (UNCTAD) 2013 report is one of them.
- Does the UNCTAD report constitute good evidence for the benefits of organic agriculture? This report, as well as similar earlier UNCTAD reports, have been presented – in the media, and by organic supporter organisations (like the Swedish Society for Nature Conservation) – as the word of United Nations.
- Example headlines: “UN Report Says Small-Scale Organic Farming Only Way to Feed the World” (Technologywater, a site on aquaponics, self-reliance, and water security – the piece was re-posted on the Huffington Post) and “United Nations Calls for an End to Industrialized Farming” (truth-out.org).
- Here is the first hiccup. Despite the claims, this report does not actually represent the views of the UN or the UNCTAD. These myriad reports are presentations made by collections of individual authors. This particular 2013 report is written by a group of organic advocates – these are not the words of institutions, or UN, or scientific organisations, or even agricultural organisations.
Land sharing v. land sparing
How imperfect can land sparing be before land sharing is more favourable for wild species? Ben Balmford, Rhys E. Green, Malvika Onial, Ben Phalan, Andrew Balmford; Journal of Applied Ecology; 05 Oct 2018
- Two solutions, at opposite ends of a continuum, have been proposed to limit negative impacts of human agricultural demand on biodiversity. Under land sharing, farmed landscapes are made as beneficial to wild species as possible, usually at the cost of lower yields. Under land sparing, yields are maximised and land not needed for farming is spared for nature. Multiple empirical studies have concluded that land‐sparing strategies would be the least detrimental to wild species, provided the land not needed for agriculture is actually spared for nature. However, the possibility of imperfections in the delivery of land sparing has not been comprehensively considered.
- Land sparing can be imperfect in two main ways: land not required for food production may not be used for conservation (incomplete area sparing), and habitat spared may be of lower quality than that assessed in surveys (lower habitat quality sparing). Here we use published data relating population density to landscape‐level yield for birds and trees in Ghana (167 and 220 species respectively) and India (174 birds, 40 trees) to assess effects of imperfect land sparing on region‐wide population sizes and hence population viabilities.
- We find that incomplete area and lower habitat quality imperfections both reduce the benefits of a land‐sparing strategy. However, sparing still outperforms sharing whenever ≥28% of land that could be spared is devoted to conservation, or the quality of land spared is ≥29% of the value of that surveyed. Thresholds are even lower under alternative assumptions of how population viability relates to population size and for species with small global ranges, and remain low even when both imperfections co‐occur.
- Comparison of these thresholds with empirical data on the likely real‐world performance of land sparing suggests that reducing imperfections in its delivery would be highly beneficial. Nevertheless, given plausible relationships between population size and population viability, land sparing outperforms land sharing despite its imperfections.
- Policy implications. Our results confirm that real‐world difficulties in implementing land sparing will have significant impacts on biodiversity. They also underscore the need for strategies which explicitly link yield increases to setting land aside for conservation, and for adoption of best practices when spared land requires restoration. However, land‐sparing approaches to meeting human agricultural demand remain the least detrimental to biodiversity, even with current imperfections in implementation.
Feeding the World Without Costing the Earth WWF; Vimeo; 2016
- Dr. Andrew Balmford of Cambridge University’s Conservation Science Group discusses impacts of land sparing and land sharing on biodiversity in agricultural systems.
Michael Pollan on the Links Between Biodiversity and Health Jack Hitt; Yale environment 360; 28 May 2013
- Author Michael Pollan has often written about people’s relationship to the natural world. In a Yale Environment 360 interview, he talks about researching his latest book and what he learned about the connections between ecology and human health.
The problem with monoculture Andrew Kniss; Control Freaks; 17 Aug 2013
- Pollan may be the most recognizable, but he is certainly not the only one to blame monoculture for many of the problems of modern agriculture. This is a pretty common refrain from the anti-GMO camp, and also from many folks who are just not big fans of conventional agriculture. There are even some who claim to be allergic to monocultures. So is monoculture evil as Pollan says? Well, it may depend on what you mean by monoculture.
Monocultures – the great evil of modern Ag? Iida Rusholms; Thougthscapism; 17 Mar 2016
- One real problem with monoculture is that it is often used as a strong argument but in a poorly defined way. The influential food journalist Michael Pollan has gone as far as to claim that monoculture is the “real problem”, the “great evil in american agriculture”. Another common worry is that modern biotech crops lead to “more monoculture”. A major problem with these arguments is that monoculture as a concept is very broad. Before we specify which type and degree of monoculture is the issue, we don’t really know what we are talking about. What is monoculture, and what is it not? In this piece I take a look at this ominous method and its role in modern farming.
The Anti-Monoculture Mania Thomas R. DeGregori; Butterflies and Wheels; 12 Jul 2003
- the Green Revolution ... has increased food production by 2.7 times on about the same land under cultivation, accommodating a doubling of the population over the last 40 years
- also about Bt resistance - first seen in organic crops
- This last question is vitally important for those opposed to Vitamin A enhanced rice who blandly state the need for greater crop diversity. Fine! Very fine in fact! Who is opposed to the families of poor subsistence rice farmers eating more mangoes and fruits and vegetables of various kinds, and even some meat or fish? Do the critics really believe that the poor families need their activist saviors to tell them that such dietary diversity would be nutritionally beneficial as well as desirable in every other way? If the critics have ways of bringing about this changed pattern of cropping, why don’t they simply do it, and stop wasting their time attacking a system that by their reckoning is a failure? If there are ways of doing agriculture that require fewer inputs but provide the same if not greater yields per unit of land, then why are they not out there showing the farmers how to do it? Farmers the world over may be on the conservative side, but in the modern era they have been one of the most world’s responsive groups when it comes to producing a better crop.
Dietary pesticides (99.99% all natural) BRUCE N. AMES, MARGIE PROFET, LoIs SWIRSKY GOLD; PNAS; Oct 1990
- ABSTRACT The toxicological significance of exposures to synthetic chemicals is examined in the context of exposures to naturally occurring chemicals. We calculate that 99.99% (by weight) of the pesticides in the American diet are chemicals that plants produce to defend themselves. Only 52 natural pesticides have been tested in high-dose animal cancer tests, and about half (27) are rodent carcinogens; these 27 are shown to be present in many common foods. We conclude that natural and synthetic chemicals are equally likely to be positive in animal cancer tests. We also conclude that at the low doses of most human exposures the comparative hazards of synthetic pesticide residues are insignificant.
What Farmers Can Do About Climate Change: Grazing National Farmer's Union; Food and Farm Discussion Lab; 1 Nov 2017
- EDITOR: The National Farmer’s Union has been running a series on their Climate Column on What Farmer’s Can Do About Climate Change. We’re going to be collecting some of those posts and organizing them by theme. In our first installment, we’ve gathered three posts related to grazing techniques to deal with or address climate change.
- Prescribed Grazing
- One approach to responding to climate change that incorporates both livestock and land is prescribed grazing, which, as the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) describes it, is “the controlled harvest of vegetation with grazing animals, managed with the intent to achieve a specific objective.” This is achieved by regulating the frequency and intensity of grazing, as well as the density and placement of livestock. The aforementioned “specific objective” varies from operation to operation, and could encompass both conservation and economic goals.
- Rotational Grazing
- Rotational grazing is one of the most common forms of prescribed grazing. Under rotational grazing, as the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) describes it, “only one portion of pasture is grazed at a time while the remainder of the pasture ‘rests.’” Before incorporating rotational grazing into their management plans, producers must use fences to partition their grazing land into smaller subdivisions, known as “paddocks.” Livestock are then herded from paddock to paddock and allowed to graze for a specified amount of time, allowing the rest of the land to rejuvenate during that period.
- Growing trees on farmland allows producers to store more carbon while simultaneously achieving other advantages for their farms’ productivity. The National Agroforestry Center (NAC) shares information on such practices, which can benefit crop growers and livestock producers alike. Silvopasture is one practice that allows folks engaged in grazing to enhance the climate resilience of their operations.
Silvopasture / agro-forestry
Putting pigs in the shade: the radical farming system banking on trees John Vidal; The Guardian; 13 Jul 2019
- A farm in Portugal is showing how the ancient art of silvopasture – combining livestock with productive trees – may offer some real answers to the climate crisis
Environmental impacts of meat v veg, different food sources
Quantification of the environmental impact of different dietary protein choices1–3 Lucas Reijnders and Sam Soret; American Society for Clinical Nutrition; 2003
- ABSTRACT Quantitative environmental evaluations of meat, fresh vegetables, and processed protein based on soybeans suggest that the environmental burden of vegetarian foods is usually relatively low when production and processing are considered. The environmental comparison of cheese varieties made from cow milk and directly from lupine and the evaluation of energy inputs in fish protein and vegetable protein also suggest an environmental advantage for vegetarian food. In the evaluation of processed protein food based on soybeans and meat protein, a variety of environmental impacts associated with primary production and processing are a factor 4.4–> 100 to the disadvantage of meat. The comparison of cheese varieties gives differences in specific environmental impacts ranging between a factor 5 and 21. And energy use for fish protein may be up to a factor 14 more than for protein of vegetable origin. Assessment suggests that on average the complete life cycle environmental impact of nonvegetarian meals may be roughly a factor 1.5–2 higher than the effect of vegetarian meals in which meat has been replaced by vegetable protein. Although on average vegetarian diets may well have an environmental advantage, exceptions may also occur. Long-distance air transport, deep-freezing, and some horticultural practices may lead to environmental burdens for vegetarian foods exceeding those for locally produced organic meat. Am J Clin Nutr 2003;78(suppl):664S–8S.
- KEY WORDS Life cycle impact assessment, environmental impact, meat, cheese, fish, soybeans, processed protein, vegetables, vegetarian meals
Global Warming: Role of Livestock Veerasamy Sejian, Iqbal Hyder, T. Ezeji, J. Lakritz, Raghavendra Bhatta, J. P. Ravindra, Cadaba S. Prasad, Rattan Lal; chapter from Climate Change Impact on Livestock: Adaptation and Mitigation
- This chapter provides an overview of the current state of knowledge concerning global warming with special reference to contribution from livestock resources. Global warming pertains to the effect of natural greenhouse gases (GHGs) such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and halogenated compounds on the environment. These GHGs are generated by humans and human-related activities. Carbon dioxide, CH4, and N2O are the principal sources of radiative forcing (Fifth IPCC Report of 2013). Interestingly, livestock contributes to climate change through emissions of CO2, CH4, and N2O into the atmosphere. Globally, the livestock sector directly and indirectly contributes 18 % (7.1 billion tonnes CO2 equivalent) of GHG emissions. While direct GHG emissions from livestock refer to emissions from enteric fermentations in livestock, urine excretion, and microbial activities in manures, indirect GHG emissions are those not directly derived from livestock activities but from manure applications on farm crops, production of fertilizer for growing crops used for animal feed production, and processing and transportation of refrigerated livestock products. Other indirect emissions include deforestation, desertification, and release of carbons from cultivated soils due to expansion of livestock husbandry. According to FAO’s Global Livestock Environmental Assessment Model (GLEAM), the GHG emission from livestock-related activities was estimated to be around 7.1 gigatonnes CO2-eq. per annum, representing 14.5 % of human-induced emissions. This clearly indicates the significant role for livestock contributions to climate change.
- Lesser consumption of animal products is necessary to save the world from the worst impacts of climate change, UN report says
Can we feed the world and stop deforestation? Depends what’s for dinner Laura Kehoe; The Conversation; 19 Apr 2016
- It’s a tricky thing to grow enough food for a ballooning population without destroying the natural world. And when I say a tricky thing, I mean it’s one of the greatest challenges humanity has ever faced. Luckily for us, it is theoretically possible, and the easiest way to get there is by drastically cutting down on meat.
What's Driving Deforestation? Union of Concerned Scientists
Climate change: Which vegan milk is best? Clara Guibourg, Helen Briggs; BBC News; 22 Feb 2019
- comparison of Emissions, Land use and Water use of dairy versus plant-based milks, plus a calculator of impacts of various foods.
Peters et al
Carrying capacity of U.S. agricultural land: Ten diet scenarios Christian J. Peters, Jamie Picardy, Amelia F. Darrouzet-Nardi, Jennifer L. Wilkins, Timothy S. Griffin, Gary W. Fick; Renewable Agriculture and Food Systems; 04 Jul 2007
- Agriculture faces a multitude of challenges in the 21st century, and new tools are needed to help determine how it should respond. Among these challenges is a need to reconcile how human food consumption patterns should change to both improve human nutrition and reduce agriculture's environmental footprint. A complete-diet framework is needed for better understanding how diet influences demand for a fundamental agricultural resource, land. We tested such a model, measuring the impact of fat and meat consumption on the land requirements of food production in New York State (NYS). Analysis was confined to this geographic area to simplify the modeling procedure and to examine the state's ability to reduce environmental impact by supplying food locally. Per capita land resource requirements were calculated with a spreadsheet model for 42 diets ranging from 0 to 381 g d−1 (0 to 12 oz d−1) of meat and eggs and 20 to 45% total calories from fat. Many of these diets meet national dietary recommendations. The potential human carrying capacity of the NYS land base was then derived, based on recent estimates of available agricultural land. A nearly fivefold difference (0.18–0.86 ha) in per capita land requirements was observed across the diets. Increasing meat in the diet increased per capita land requirements, while increasing total dietary fat increased the land requirements of low meat diets but reduced the land needed for high meat diets. Higher meat diets used a larger share of the available cropland suited only to pasture and perennial crops. Thus, only a threefold difference was observed for the potential number of people fed from the NYS land base (2.0–6.2 million). In addition, some high-fat vegetarian diets supported fewer people than lower fat diets containing 63–127 g d−1 of meat (approximately one- to two-thirds of the national average per capita consumption in the US). These results support the assertion that diet should be considered in its entirety when assessing environmental impact. To more completely understand how diet influences land requirements and potential carrying capacity, this model should be applied across a larger geographic area that encompasses a wider variety of climates and soil resources. To better understand the ability of a local region to supply more of its own food, the model should be moved into a geospatial framework.
Diet for small planet may be most efficient if it includes dairy and a little meat, Cornell researchers report Susan S. Lang; Cornell Chronicle; 4 Oct 2007
- A low-fat vegetarian diet is very efficient in terms of how much land is needed to support it. But adding some dairy products and a limited amount of meat may actually increase this efficiency, Cornell researchers suggest.
- The study, published in the journal Renewable Agriculture and Food Systems, is the first to examine the land requirements of complete diets. The researchers compared 42 diets with the same number of calories and a core of grains, fruits, vegetables and dairy products (using only foods that can be produced in New York state), but with varying amounts of meat (from none to 13.4 ounces daily) and fat (from 20 to 45 percent of calories) to determine each diet's "agricultural land footprint." They found a fivefold difference between the two extremes.
Carrying capacity of U.S. agricultural land: Ten diet scenarios Christian J. Peters, Jamie Picardy, Amelia F. Darrouzet-Nardi, Jennifer L. Wilkins, Timothy S. Griffin, Gary W. Fick; Elementa Science of the Anthropocene; 22 Jul 2016
- Strategies for environmental sustainability and global food security must account for dietary change. Using a biophysical simulation model we calculated human carrying capacity under ten diet scenarios. The scenarios included two reference diets based on actual consumption and eight “Healthy Diet” scenarios that complied with nutritional recommendations but varied in the level of meat content. We considered the U.S. agricultural land base and accounted for losses, processing conversions, livestock feed needs, suitability of land for crops or grazing, and land productivity. Annual per capita land requirements ranged from 0.13 to 1.08 ha person-1 year-1 across the ten diet scenarios. Carrying capacity varied from 402 to 807 million persons; 1.3 to 2.6 times the 2010 U.S. population. Carrying capacity was generally higher for scenarios with less meat and highest for the lacto-vegetarian diet. However, the carrying capacity of the vegan diet was lower than two of the healthy omnivore diet scenarios. Sensitivity analysis showed that carrying capacity estimates were highly influenced by starting assumptions about the proportion of cropland available for cultivated cropping. Population level dietary change can contribute substantially to meeting future food needs, though ongoing agricultural research and sustainable management practices are still needed to assure sufficient production levels.
I was wrong about veganism. Let them eat meat – but farm it properly George Monbiot; Guardian; 6 Sep 2010
- In Meat: A Benign Extravagance, Simon Fairlie pays handsome tribute to vegans for opening up the debate. He then subjects their case to the first treatment I've read that is both objective and forensic. His book is an abattoir for misleading claims and dodgy figures, on both sides of the argument.
Why I'm eating my words on veganism – again George Monbiot; Guardian; 27 Nov 2013
- In 2010, after reading a fascinating book by Simon Fairlie, a fair part of which was devoted to attacking my views, I wrote a column in which I maintained that I'd been wrong to claim that veganism is the only ethical response to what is arguably the world's most urgent social justice issue. Diverting to livestock grain that could have fed human beings, I'd argued, is grotesque when 800 million go hungry. Fairlie does not dispute this, and provides plenty of examples of the madness of the current livestock production system. But he points out that plenty of meat can be produced from feed that humans cannot eat, by sustaining pigs on waste and grazing cattle and sheep where crops can't grow. I was swayed by his argument. But now I find myself becoming unswayed. In the spirit of unceasing self-flagellation I think I might have been wrong about being wrong. Part of the problem is that while livestock could be fed on waste and rangelands, ever less of the meat we eat in the rich nations is produced this way.
I’ve converted to veganism to reduce my impact on the living world George Monbiot; Guardian; 9 Aug 2016
- he world can cope with 7 or even 10 billion people. But only if we stop eating meat. Livestock farming is the most potent means by which we amplify our presence on the planet. It is the amount of land an animal-based diet needs that makes it so destructive. An analysis by the farmer and scholar Simon Fairlie suggests that Britain could easily feed itself within its own borders. But while a diet containing a moderate amount of meat, dairy and eggs would require the use of 11m hectares of land (4m of which would be arable), a vegan diet would demand a total of just 3m. Not only do humans need no pasture, but we use grains and pulses more efficiently when we eat them ourselves, rather than feed them to cows and chickens. This would enable 15m hectares of the land now used for farming in Britain to be set aside for nature. Alternatively, on a vegan planet, Britain could feed 200 million people.
Cowspiracy: stampeding in the wrong direction? Danny Chivers; New Internationalist; 10 Feb 2016
- There’s much to admire in Kip Andersen’s viral documentary, but its political framing – and a head-slapping statistical error – threaten to undermine its core message.
Cowspiracy: stampeding in the wrong direction Danny Chivers; Climate & Capitalism; 13 Feb 2016
- By focusing on veganism to the exclusion of all else, Cowspiracy implies that anyone who eats meat isn’t a ‘proper’ environmentalist. This is deeply offensive and elitist, and it harms the movement we need to build.
Artificial meat / substitutes
Lab-g Price of Lab-Grown Burger Falls from $325K to $11.36 Natalie Shoemaker; big think; 2015
- Lab-grown meat could be on your plate within the next five years. For the past few years, the barrier to getting test-tube meat into the hands of consumers has been the cost of production. In 2013, it was around $325,000 to make this stuff in a lab, but the process has been refined, and the cost now is just $11.36.
- "And I am confident that when it is offered as an alternative to meat that increasing numbers of people will find it hard not to buy our product for ethical reasons," Peter Verstrate, head of Mosa Meat, told the BBC.
Team wants to sell lab grown meat in five years Pallab Ghosh - Science correspondent; BBC News; 15 Oct 2015
- The Dutch team who have grown the world's first burger in a lab say they hope to have a product on sale in five years.
- The lab-grown burger was developed by Prof Mark Post at his laboratory in Maastricht University, The Netherlands.
- The burger is made from stem-cells: the templates from which specialised tissue such as nerve or skin cells develop.
- An independent study found that lab-grown beef uses 45% less energy than the average global representative figure for farming cattle. It also produces 96% fewer greenhouse gas emissions and requires 99% less land.
- The process starts with stem cells being extracted from cow muscle tissue. In the laboratory, these are cultured with nutrients and growth-promoting chemicals to help them develop and multiply. Three weeks later, there are more than a million stem cells, which are put into smaller dishes where they coalesce into small strips of muscle about a centimetre long and a few millimetres thick.
The strips are then painstaking layered together, coloured and mixed with fat.
Impossible Foods website
Why this "bloody" veggie burger may become the Tesla of food Katherine Hicks and Jeff Stein; Vox; 7 Jul 2016
This delicious burger could change food the way that Tesla changed cars Ben Gilbert; Tech Insider; 6 Jul 2016
The Impossible Burger is Ready for Its (Meatless) Close-Up KURT SOLLER; Wall St Journal; 14 Jun 2016
- A long-awaited vegan burger from Silicon Valley startup Impossible Foods hits select restaurants this month. But can coconut oil and potato proteins compete with the red-blooded original?
The Impossible Burger wouldn’t be possible without genetic engineering Nathanael Johnson; Grist; 10 Aug 2017
- soy leghemoglobin, or SLH, the key ingredient that makes the Impossible Burger uniquely meaty, is churned out by genetically modified yeast.
- SLH may be produced by transgenic yeast, but it isn’t a GMO itself. He also pointed out that this isn’t unusual: nearly all cheese contains a GMO-produced enzyme.
Beyond Meat website
- WATER, PEA PROTEIN ISOLATE, OIL BLEND (CANOLA OIL, FLAXSEED OIL, PALMOIL, SUNFLOWER OIL, DHA ALGAL OIL), METHYLCELLULOSE, CARRAGEENAN, POTASSIUM BICARBONATE, CARAMEL COLOR†, YEAST EXTRACT, MALTODEXTRIN, POTASSIUM CHLORIDE, TAPIOCA STARCH, SORBITOL, CALCIUM CHLORIDE, NATURAL FLAVORING, SPICES, SALT, VEGETABLE EXTRACT MIX (SPINACH, BROCCOLI, CARROT, TOMATO, BEET, SHIITAKE MUSHROOM), L-CYSTEINE HYDROCHLORIDE, BEETJUICE POWDER (FLAVOR AND COLOR), NATURAL HICKORY SMOKE CONCENTRATE, CALCIUM SULFATE, ONION POWDER, ONION EXTRACT, MESQUITE POWDER, SUGAR‡, POMEGRANATE SEED POWDER, FERRIC PHOSPHATE (IRON), PAPRIKA EXTRACT (SPICE AND COLOR), GARLIC EXTRACT, CYANOCOBALAMIN (VITAMIN B12)
- ALL INGREDIENTS FROM NON-GMO SOURCES
- † AMMONIUM AND SULFITE FREE ‡ VEGAN CANE JUICE
Savory / holistic management
Eat more meat and save the world: the latest implausible farming miracle George Monbiot; Guardian; 4 Aug 2014
- Allan Savory tells us that increasing livestock can reduce desertification and reverse climate change – but where is the scientific evidence?
Why George Monbiot is wrong: grazing livestock can save the world L Hunter Lovins; Guardian; 19 Aug 2014
- L Hunter Lovins: George Monbiot’s recent criticism of Allan Savory’s theory that grazing livestock can reverse climate change ignores evidence that it’s already experiencing success
- Savory’s argument, which counters popular conceptions, is that more livestock rather than fewer can help save the planet through a concept he calls “holistic management.” In brief, he contends that grazing livestock can reverse desertification and restore carbon to the soil, enhancing its biodiversity and countering climate change. Monbiot claims that this approach doesn’t work and in fact does more harm than good. But his assertions skip over the science and on the ground evidence that say otherwise.
Commentary: A critical assessment of the policy endorsement for holistic management David D. Briske, Andrew J. Ash, Justin D. Derner, Lynn Huntsinger; Agricultural Systems; Mar 2014 [paywall]
- This commentary summarizes the evidence supporting holistic management (HM) and intensive rotational grazing (IRG) to demonstrate the extent to which Sherren and coauthors (2012) have overstated their policy endorsement of HM for rangeland application. Five major points are presented – distinction between HM and IRG, insufficient evaluation of the contradictory evidence, limitations of the experimental approach, additional costs associated with IRG, and heterogeneous capabilities and goals of graziers’ to manage intensive strategies – to justify why this policy endorsement is ill-advised. The vast majority of experimental evidence does not support claims of enhanced ecological benefits in IRG compared to other grazing strategies, including the capacity to increase storage of soil organic carbon.
Criticism of Savory's work Wikipedia
Holistic Management: Misinformation on the Science of Grazed Ecosystems John Carter, Allison Jones, Mary O’Brien, Jonathan Ratner and George Wuerthner; International Journal of Biodiversity; 23 Apr 2014
- Over 3 billion hectares of lands worldwide are grazed by livestock, with a majority suffering degradation in ecological condition. Losses in plant productivity, biodiversity of plant and animal communities, and carbon storage are occurring as a result of livestock grazing. Holistic management (HM) has been proposed as a means of restoring degraded deserts and grasslands and reversing climate change. The fundamental approach of this system is based on frequently rotating livestock herds to mimic native ungulates reacting to predators in order to break up biological soil crusts and trample plants and soils to promote restoration. This review could find no peer-reviewed studies that show that this management approach is superior to conventional grazing systems in outcomes. Any claims of success due to HM are likely due to the management aspects of goal setting, monitoring, and adapting to meet goals, not the ecological principles embodied in HM. Ecologically, the application of HM principles of trampling and intensive foraging are as detrimental to plants, soils, water storage, and plant productivity as are conventional grazing systems. Contrary to claims made that HM will reverse climate change, the scientific evidence is that global greenhouse gas emissions are vastly larger than the capacity of worldwide grasslands and deserts to store the carbon emitted each year.
Localism / Leap Manifesto
The Locavore's Dilemma Pierre Desrochers and Hiroko Shimizu
- In The Locavore's Dilemma Pierre Desrochers and Hiroko Shimizu explain the history, science, and economics of food supply to reveal what locavores miss or misunderstand: the real environmental impacts of agricultural production; the drudgery of subsistence farming; and the essential role large-scale, industrial producers play in making food more available, varied, affordable, and nutritionally rich than ever before in history."
Modern Environmental Fairy Tales: "Moving Back to the Land" and the 100 Mile Diet A Chemist In Langley; 24 Dec 2014
- When I socialize with my environmental friends one of the most common themes is their dream to move “off the grid” and live off the land. This idea of moving to a neo-Walden and experiencing a Thoreau-like existence seems to be a common theme amongst my environmental friends and apparently I am not alone. In his 1992 book “Green Delusions” Martin Lewis wrote about the new “Arcadians”. The term was used to describe environmentalists who wanted to go back to a simpler time and live off the land.
Debunking the Leap Manifesto – Demand #9: Local agriculture is not always better A Chemist In Langley; 17 Sep 2015
- The “smaller is better”, “local is better”, “organic is better” memes in agriculture are some of the most pernicious myths to come out of the modern environmental movement and show a profound lack of understanding of how food is grown and energy is used.
http://conservationmagazine.org/2016/01/this-is-why-cities-cant-grow-all-their-own-food/ THIS IS WHY CITIES CAN’T GROW ALL THEIR OWN FOOD] University of Washngton; 26 Jan 2016
- If every homeowner in Seattle ripped up their lawn and replaced it with edible plants, the resulting crop production would be enough to feed just one percent of the city’s residents, according to a new study by researchers at the University of Washington. Previous studies in various cities have surveyed land currently in use for urban agriculture, identified vacant parcels that could grow food, and estimated the percentage of specific categories of food such as eggs or vegetables that might be produced within city limits. The new study, published in the journal Urban Forestry & Urban Greening, takes a more comprehensive approach. “This is the first systemized way of looking at all the different crops a city could grow, as well as looking at the nutrition and actual amount of food people need to survive,” says senior author L. Monika Moskal, associate professor of environmental and forest sciences.
Fertilizer Runoff Overwhelms Streams and Rivers--Creating Vast "Dead Zones" David Biello; Scientific American; 14 Mar 2008
- The nation's waterways are brimming with excess nitrogen from fertilizer--and plans to boost biofuel production threaten to aggravate an already serious situation. The water in brooks, streams and creeks from Michigan to Puerto Rico carries a heavy load of pollutants, particularly nitrates from fertilizers. These nitrogen and oxygen molecules that crops need to grow eventually make their way into rivers, lakes and oceans, fertilizing blooms of algae that deplete oxygen and leave vast "dead zones" in their wake. There, no fish or typical sea life can survive. And scientists warn that a federal mandate to produce more biofuel may make the situation even worse.
Worldwide decline of the entomofauna: A review of its drivers Francisco Sánchez-Bayo, Kris A.G.Wyckhuys; Biological Conservation; April 2019
- Biodiversity of insects is threatened worldwide. Here, we present a comprehensive review of 73 historical reports of insect declines from across the globe, and systematically assess the underlying drivers. Our work reveals dramatic rates of decline that may lead to the extinction of 40% of the world's insect species over the next few decades. In terrestrial ecosystems, Lepidoptera, Hymenoptera and dung beetles (Coleoptera) appear to be the taxa most affected, whereas four major aquatic taxa (Odonata, Plecoptera, Trichoptera and Ephemeroptera) have already lost a considerable proportion of species. Affected insect groups not only include specialists that occupy particular ecological niches, but also many common and generalist species. Concurrently, the abundance of a small number of species is increasing; these are all adaptable, generalist species that are occupying the vacant niches left by the ones declining. Among aquatic insects, habitat and dietary generalists, and pollutant-tolerant species are replacing the large biodiversity losses experienced in waters within agricultural and urban settings. The main drivers of species declines appear to be in order of importance: i) habitat loss and conversion to intensive agriculture and urbanisation; ii) pollution, mainly that by synthetic pesticides and fertilisers; iii) biological factors, including pathogens and introduced species; and iv) climate change. The latter factor is particularly important in tropical regions, but only affects a minority of species in colder climes and mountain settings of temperate zones. A rethinking of current agricultural practices, in particular a serious reduction in pesticide usage and its substitution with more sustainable, ecologically-based practices, is urgently needed to slow or reverse current trends, allow the recovery of declining insect populations and safeguard the vital ecosystem services they provide. In addition, effective remediation technologies should be applied to clean polluted waters in both agricultural and urban environments.
Is the Insect Apocalypse Really Upon Us? Ed Yong; The Atlantic; 19 Feb 2019
- Claims that insects will disappear within a century are absurd, but the reality isn’t reassuring either.
OUT OF THE MOUTH OF BABE Cotton Incorporated; 19 May 2016
- Healthy living advocate Food Babe recently posted this negative and inaccurate characterization of cottonseed oil and cotton. Cotton Incorporated responded with a lengthy post that respectfully pointed out the numerous factual errors in the piece, including citations.
Wheat myth debunked by a major new study University of Queensland; Phys.Org; 17 Jun 2019
- The myth that modern wheat varieties are more heavily reliant on pesticides and fertilisers is debunked by new research published in Nature Plants today.
- Lead author on the paper, Dr. Kai Voss-Fels, a research fellow at The University of Queensland, said modern wheat cropping varieties actually out-perform older varieties in both optimum and harsh growing conditions.
Why Isn’t Our Cannabis Sustainable Yet? It’s Complicated Lauren Terry; The Potlander; 4 Oct 2016
- discussion of energy and other requirements of growing Cannabis, focus on Oregon
Evan Mills study
The carbon footprint of indoor Cannabis production Evan Mills; Energy Policy; 17 Apr 2012
- The emergent industry of indoor Cannabis production – legal in some jurisdictions and illicit in others – utilizes highly energy intensive processes to control environmental conditions during cultivation. This article estimates the energy consumption for this practice in the United States at 1% of national electricity use, or $6 billion each year. One average kilogram of final product is associated with 4600 kg of carbon dioxide emissions to the atmosphere, or that of 3 million average U.S. cars when aggregated across all national production. The practice of indoor cultivation is driven by criminalization, pursuit of security, pest and disease management, and the desire for greater process control and yields. Energy analysts and policymakers have not previously addressed this use of energy. The unchecked growth of electricity demand in this sector confounds energy forecasts and obscures savings from energy efficiency programs and policies. While criminalization has contributed to the substantial energy intensity, legalization would not change the situation materially without ancillary efforts to manage energy use, provide consumer information via labeling, and other measures. Were product prices to fall as a result of legalization, indoor production using current practices could rapidly become non-viable
The Booming Pot Industry Is Draining the U.S. Energy Supply Tom Huddleston, Jr; Fortune; 21 Dec 2015
- As the legal marijuana market expands, so grows the energy consumption associated with an industry that depends on growing facilities with high-wattage lights and powerful cooling systems.
Cannabis v. Hemp growing
Why Hemp and Marijuana Farmers Had a Messy Breakup—And What Happens Now Matthew Korfhage; The Potlander; 4 Oct 2016
- In 2016, it would appear that hemp and weed farmers have reached at least an unstable compromise