(Beyond Pesticides, July 26, 2011) On July 25, 2011, in the case of Oluf Johnson v. Paynesville Farmers Union Cooperative Oil Company, Judge Ross of the Minnesota Court of Appeals ruled that pesticides drifting from one farm to another may constitute trespass. Organic farmers Oluf and Debra Johnson filed a civil suit alleging that the oil company sprayed a pesticide that drifted from targeted fields onto theirs, and that this prevented them from selling their crops as organic. Previously, a district court dismissed the Johnsons’ trespass claims. The victory is important for organic growers who are frequently under threat of pesticide drift from neighboring properties. Under the federal organic standards authorized by the Organic Foods Production Act (OFPA), produce may not be labeled organic if it is contaminated with pesticide residues, as a result of off-site use, o greater than five percent of the allowable pesticide tolerance levels. Pesticide tolerances are the pesticide residue limits used in the U.S. or by countries imporing to the U.S., which are set by the federal government under the Food Quality Protection Act (FQPA). Because we live in a polluted world where pesticide residues are present, often at low levels, nearly everywhere. A very […]

(Beyond Pesticides, July 12, 2011) Following the Environmental Protection Agency’s (EPA) denial of Dow AgroSciences’ request for an administrative hearing to keep sulfuryl fluoride on the market, the Natural Resources Defense Council (NRDC) sent a letter to the agency on June 29, 2011 opposing EPA’s phase-out of the toxic fumigant pesticide, which is marketed as a substitute for the outdated, ozone-depleting methyl bromide. According to its letter, the environmental group believes that the “proposed action will imperil EPA’s ability to complete the long-overdue phase-out of methyl bromide, leading to prolonged and increased depletion of the ozone layer, higher levels of ultraviolet radiation, and higher risks of cancer, cataracts, and immunological disorders.” Under pressure from a 2006 petition submitted by Fluoride Action Network (FAN), Beyond Pesticides, and Environmental Working Group (EWG), EPA announced its plan to cancel all allowable pesticide residue levels (tolerances) for sulfuryl fluoride over three years, effectively banning its use in January 2014. The agency found that when residues on food products are combined with fluoridated drinking water and toothpaste, aggregate exposure levels are too high. Beyond Pesticides has repeatedly pointed to non-toxic practices that have eliminated the need for either hazardous fumigant throughout the process. Manufactured by […]

(Beyond Pesticides, June 15, 2011) This week’s release of the new Shopper’s Guide to Pesticides in Produce (Dirty Dozen/Clean 15) by the Environmental Working Group (EWG), which focuses on pesticide residues on conventional produce, highlights the importance of eating organic fruits and vegetables to minimize personal exposure to toxic pesticides. Beyond Pesticides’ Eating with a Conscience guide complements the EWG list, going beyond residues on food to examine the impacts of the pesticides used to grow conventional produce on the health of farmworkers and rural communities, water quality, honey bees and wildlife poisoning, and more. Both Beyond Pesticides and EWG encourage shoppers to choose organic food whenever possible. To create their seventh edition of the Shopper’s Guide, analysts at EWG synthesized data collected from the U.S. Department of Agriculture (USDA) and the Food and Drug Administration (FDA). Most samples are washed and peeled prior to being tested, so the rankings reflect the amounts of the chemicals likely present on the food when is it eaten. Apples, celery and strawberries top this year’s “Dirty Dozen” list. Making an appearance in the guide for the first time is the herb cilantro, which had never been tested by USDA until now. The data […]

(Beyond Pesticides, May 20, 2011) At its April 26-29, 2011 Spring meeting in Seattle, Washington, the National Organic Standards Board (NOSB) strengthened standards affecting the integrity of organic food and farming and rejected proposals that would have weakened the standards. The board voted on recommendations proposed by each of the various issue committees including Crops; Livestock; Handling; Materials; Certification, Accreditation, and Compliance; and Policy Development. Decisions were made regarding a wide range of materials and practices, from pesticides and fertilizers to mulches and processing aids. There were several highly controversial issues discussed, including the use of antibiotics to control fruit tree diseases, living conditions for livestock, and the process for how the board determines whether a material is natural or synthetic. You can find details for the meeting on Beyond Pesticides’ organic action page. Prior to the meeting, the committee proposals were posted on the internet and opened for public comment. Following the democratic spirit inherent in the organic law, the board is required to take the voiced concerns of the public into consideration in making its decisions. There were over three thousand comments submitted to the board for this meeting — more than any other previous NOSB meeting. Many […]

(Beyond Pesticides, May 13, 2011) Two recent studies performed independently of each other confirm that organically produced food is safer and can actually save money in the long term. A report from the University of Florida has found that salmonella is the leading disease-causing pathogen found in food, leading to more than $3 billion every year in public health costs. Salmonella is a microbe that is often found in poultry and egg products. An unrelated study, published in November of last year by the University of Georgia, found that there is a significantly lower rate of salmonella contamination in organic chickens compared to conventional chickens. Taken together, the results of these two studies reveal the potential for organic poultry farming to significantly reduce the risk to human health from food pathogens, as well as the cost to society of treating and eliminating those pathogens. In April of this year, the Emerging Pathogens Institute at the University of Florida released a report entitled “Ranking the Risks: The 10 Pathogen-Food Combinations with the Greatest Burden on Public Health.” The aim of the report was to evaluate the burden to society, in terms of health risks as well as financial cost, caused by […]

(Beyond Pesticides, May 6, 2011) On Wednesday this week, the Future of Food conference, organized by The Washington Post, convened at Georgetown University in Washington, DC and featured experts in science, industry, and agriculture discussing ways to reform local, national, and global food systems to work toward justice and sustainability. The keynote speaker for the conference was Prince Charles, Prince of Wales, who has been a longtime advocate for the natural world and for sustainable systems of food production. The event also featured such noted speakers as U.S. Secretary of Agriculture Tom Vilsack, global sustainability advocate Vandana Shiva, nutritionist Marion Nestle, writer Wendell Berry, urban agriculture pioneer Will Allen, organic researcher Fred Kirschenmann, author Eric Schlosser, Stonyfield CEO Gary Hirshberg, and many more. Prince Charles in his speech (text available here, video available here) discussed many of the problems currently facing food production and advocated for a swifter and more direct move toward more sustainable, or “durable,” as he called it, systems. Pointing out the many dangers caused by an industrial farming system that depletes natural resources and impairs biodiversity, he argued that we cannot afford to continue operating under the current system for very much longer before it starts […]

(Beyond Pesticides, May 3, 2011) Beyond Pesticides is pleased to announce the launch of its YouTube Channel. Officially launched this week, the channel features keynote presentations and panel sessions from Beyond Pesticides’ 29th National Pesticide Forum held April 2011 at the Colorado School of Public Health in Aurora, CO. The videos serve as an educational resource for those working to change pesticide policies in their communities, schools, institutions, state and nationwide. Individuals and organizations are invited to submit their own videos to be included on the Beyond Pesticides’ channel. Featured videos included with the initial launch include: — Pesticides 101: An introduction to pesticide issues (Caroline Cox, Center for Environmental Health) — Protecting Pollinators from Pesticides: Stopping the demise of honeybees (Tom Theobald, Niwot Honey Farm; James Frazier, PhD, Penn State University; Marygael Meister, Denver Beekeepers Association) — Genetically Engineered Food: Failed promises and hazardous outcomes (George Kimbrell, Center for Food Safety) — Health and Science Panel (John Adgate, PhD, Colorado School of Public Health; Dana Boyd Barr, PhD, Emory University; Christine Parks, PhD, National Institute for Environmental Health Sciences (NIEHS); Changlu Wang, PhD; Rutgers University) — Beyond Lists: Where did all those pesticides come from? (Theo Colborn, PhD, The […]

(Beyond Pesticides, April 21, 2011) Citing consumer’s growing aversion to the toxic chemical DEET and other harmful pesticides, researchers at the Centers for Disease Control and Prevention (CDC) are pushing to develop a new natural repellent and insecticide from the chemical nootkatone, found in grapefruits. Nootkatone is derived from the essential oils of plants, including grapefruit, vetiver grass and Alaskan yellow cedar. As an essential oil, it is highly volatile and evaporates quickly. This means that it doesn’t last very long and may need to be applied frequently. As a result, researchers are seeking ways to make it longer-lasting. In one cooperative project by the CDC and the U.S. Department of Agriculture’s (USDA) Agricultural Research Service (ARS), entomologists Kirby Stafford, PhD and Robert Behle, PhD use lignin to encapsulate nootkatone in order to extend the chemical’s residual activity. The study, “Lignin + Nootkatone = Dead Ticks” published in the January 2011 issue of Agricultural Research magazine. Researcher Marc Dolan, PhD of the CDC’s vector-borne infectious diseases laboratory in Fort Collins, Colorado stresses nootkatone’s safety: “If you’ve had a grapefruit, you’ve consumed some nootkatone,” he said to NPR’s Morning Edition. “Essential oils [such as nootkatone] kill bugs and then break down […]

(Beyond Pesticides, April 5, 2011) Do you care about synthetics in your organic food? How about antibiotics? Do you think organic farmers should be spraying a known human carcinogen, nickel, or using pheromone products with toxic inert ingredients? Take action now. The documents on these issues that will be considered at the Spring 2011 meeting of the National Organic Standards Board (April 26-29, Seattle, WA) are open for public comment until April 10. Public involvement is vital for the organic regulatory process. The NOSB depends on input from the organic community, including organic consumers, farmers and processors, in making its decisions. It seeks comments from concerned consumers, farmers, professionals, or anyone with an interest in protecting the integrity and the future of organic food and farming. To make your comments more effective and easily understood, comment on each issue (see Beyond Pesticides’ positions on key issues) separately and clearly indicate what issue or materials your comments are concerning. If you would like to submit comments on multiple issues, it is preferable to submit them individually. However, if you do choose to comment on multiple issues in a single submission, please clearly separate them with subheadings. Submit your comments before April […]

(Beyond Pesticides, March 25, 2011) From protecting pollinators and banning genetic engineering to going organic in the food we eat and the way we manage our yards, parks and open spaces – these are just a few of the issues that will be addressed at the 29th National Pesticide Forum, Sustainable Community: Practical solutions for health and the environment, April 8-9 at the Colorado School of Public Health in Denver (Aurora), Colorado. Maria Rodale, CEO of Rodale Inc., publisher of Organic Gardening and Prevention magazines, and the author of Organic Manifesto will be a conference keynote speaker. See the full speaker list and schedule of events. Registration is $35 and includes all sessions and organic food. Leading up to the 29th National Pesticide Forum in Denver, Beyond Pesticides and the Denver Botanic Gardens will be hosting a free screening of the award-winning film Vanishing of the Bees on Wednesday, April 6th, 7:00pm at the Denver Botanic Gardens (1007 York Street). The film, which is narrated by Ellen Page, takes a piercing investigative look at the economic, political and ecological implications of the worldwide disappearance of the honeybee and empowers the audience to fight back. Call to the Conference: This national […]

(Beyond Pesticides, March 23, 2011) According to the Cornucopia Institute, the United States Department of Agriculture (USDA) has confirmed that it will allow products containing unapproved synthetic additives in processed food labeled “organic” for an indefinite grace period. The National Organic Standards Board (NOSB) is slated to take up the issue at its upcoming meeting in April, when it will determine whether the use of these synthetic materials meets the standards of the Organic Foods Production Act nad its standards of health and environmental protection. Consumers are urged to make their voices heard with comments to the NOSB before the April 10 deadline (see below). The Cornucopia Institute has filed legal complaints against infant formula manufacturers and Dean Foods, manufacturer of Horizon dairy products, for adding unapproved additives: Martek Biosciences Corporation’s omega-3 and omega-6 fatty acids (DHA/ARA), derived chemically from fermented algae and fungus, to foods with the organic label. The Cornucopia Institute maintains, and the USDA reiterated in a compliance letter issued March 16, that these additives are illegal in organics. But USDA also stated it would not take enforcement action at this time. The USDA’s compliance letter suggested that it would allow companies to continue adding the additives […]

(Beyond Pesticides, March 16, 2011) Congresswoman Louise Slaughter (D-NY) introduced legislation last week that seeks to help protect Americans from widespread antibiotic overuse in food animal production. Antibiotic use in agriculture, as well as in antimicrobial soaps containing materials such as triclosan, offer little to no benefit for public health, but instead contributes to increases in the growth of resistant bacteria. This makes antibiotic and antibacterial resistance a national health concern, due to the fact that it can make infections difficult or impossible to treat. Rep. Slaughter’s bill, H.R. 965 — the Preservation of Antibiotics for Medical Treatment Act, would preserve the effectiveness of antibiotics used to treat human disease by requiring the Food and Drug Administration (FDA) to revoke approval of antibiotics for non-therapeutic purposes unless the agency determines that the drugs do not produce unsafe levels of antibiotic resistance. The bill would allow farmers to continue to treat sick animals with antibiotics. “Antibiotic resistance is a major public health crisis, and yet antibiotics are used regularly and with little oversight in agriculture,” said Rep. Slaughter. The main culprits are confined animal feeding operation (CAFO) operators that routinely add human antibiotics to livestock feed for non-therapeutic purposes, such as […]

(Beyond Pesticides, March 1, 2011) As insect resistance to pesticides steadily increases, and the underlying conditions of poverty, poor water management, and indecent living conditions contribute to the spread of malaria, the search for silver bullet solutions escalates. Researchers are exploring genetic engineering as the next frontier for a product-based approach to fighting malaria, which annually kills nearly one million people worldwide. While releasing genetically engineered organisms into the environment raises serious concerns that must be fully studied, some in the public health community believe this could help slow the spread of malaria as part of an integrated campaign. At the same time, the long-term underlying causes that support the spread of malaria must be addressed. The new research indicates that a genetically engineered fungus carrying genes for a human anti-malarial antibody or a scorpion anti-malarial toxin could be an effective tool for combating malaria, at a time when the effectiveness of current pesticides against malaria mosquitoes is declining. The researchers also say that this general approach could be used for controlling other devastating insect and tick bug-borne diseases, such as or dengue fever and Lyme disease. “Though applied here to combat malaria, our transgenic fungal approach is a very […]

(Beyond Pesticides, February 15, 2011) What do an organic CEO, the lawyer leading the fight to ban GE alfalfa, a scientist who linked pesticide exposure to ADHD, and a beekeeper who exposed leaked EPA documents have in common? They will all be speaking at Sustainable Community: Practical solutions for health and the environment, the 29th National Pesticide Forum, April 8-9 at the Colorado School of Public Health in Denver (Aurora), Colorado. This national environmental conference will cover topics such as pesticides and health, pollinators, organic food and farming, genetically engineered crops, healthy communities, organic land care, non-toxic bed bug control, and more. The event is open to the public and registration starts at $35. Limited scholarships are available, contact Beyond Pesticides for information. Speaker highlights (see full list) Maria Rodale — author of Organic Manifesto, CEO of Rodale Inc. -publisher of Organic Gardening and Prevention magazines, and co-chair of the research-based Rodale Institute’s board of directors. Dana Boyd Barr, PhD — Emory University researcher whose studies have linked pesticide exposure to ADHD and other learning problems, reduced birth weight, diminished sperm quality and more. Theo Colborn, PhD — honored by Time magazine as a global Environmental Hero, Dr. Colborn is […]

(Beyond Pesticides, February 1, 20011) On January 31, 2011, a coalition of organic companies and environmental organizations, including Beyond Pesticides, released an open letter and call to action on the U.S. Department of Agriculture’s (USDA) January 27 decision to deregulate “RoundUp Ready” (glyphosa te-tolerant) genetically engineered (GE) alfalfa, allowing its unrestricted cultivation and threatening organic and non-GE conventional farmers. It sets a precedent for future deregulation of GE crops. The letter encourages individuals to write to President Obama opposing the decision and asking that the administration reconsider its position. Other signatories include upcoming National Pesticide Forum keynote Maria Rodale (CEO, Rodale, Inc. and author of Organic Manifesto), National Organic Coalition, Center for Food Safety, Organic Trade Association, Organic Valley, Stonyfield Farm, and more. The decision to deregulate GE alfalfa follows USDA’s completion of the court-mandated environmental impact statement (EIS). Secretary of Agriculture Tom Vilsack called for “coexistence” among GE, organic and conventional non-GE farmers, despite the clear recognition in the EIS that GE contamination of organic and conventionally grown crops presents a huge problem. The EIS also fails to take into account the documented increase in herbicide-resistant “super weeds” that is requiring the use of highly toxic herbicide cocktails for […]

(Beyond Pesticides, January 20, 2011) Beyond Pesticides and the National Organic Coalition (NOC) are encouraging their members to contact President Obama and the U.S. Department of Agriculture (USDA) and tell them not to approve (or not deregulate) Monsanto’s “RoundUp Ready,” genetically engineered (GE) alfalfa, which contributes to genetic drift, superweeds, and the use of a hazardous herbicide glyphosate. In December, USDA completed its environmental impact statement (EIS) of GE alfalfa. Secretary of Agriculture Tom Vilsack has rejected the option to prohibit the planting (and continuing to regulate) GE Alfalfa, despite the clear recognition in the EIS that that GE contamination of organic and conventionally grown crops presents a huge problem. USDA released its 2,400 page EIS as required by a 2007 Federal District Court decision and upheld by both 2009 Ninth Circuit Court of Appeals and June 2010 U.S. Supreme Court rulings. The litigation was led by the Center for Food Safety, and joined by Beyond Pesticides, and other groups, including conventional and organic seed companies and producers. Three alternatives are considered during the preparation of the final EIS: 1) to maintain the RR alfalfa’s status as a regulated article; 2) to deregulate RR alfalfa; or 3) to deregulate RR […]

(Beyond Pesticides, January 14, 2011) Beyond Pesticides, along with the Colorado School of Public Health – Department of Environmental and Occupational Health, Mountain and Plains Education and Research Center, and Denver Beekeeping Association, will be hosting Sustainable Community: Practical solutions for health and the environment, the 29th National Pesticide Forum, April 8-9, 2011 in Denver, CO. This national environmental conference will focus on the links between pesticides, health and the environment and will include sessions on the latest pesticide science and links to specific diseases, impacts on pollinators, organic food and farming, pesticide-free land care and much more. Register online. Speaker Highlights Maria Rodale – CEO of Rodale Inc., publisher of Organic Gardening and Prevention magazines, and the largest independent book publisher in the United States, Ms. Rodale is the author of three books. Her most recent work, Organic Manifesto, provides an indispensable and highly readable look at why chemical-free farming unquestionably holds the key to better health for our families-and the planet. Maria also sits on the board of directors of the Rodale Institute. For over sixty-years, the Rodale Institute has been researching the best practices of organic agriculture and sharing their findings with farmers and scientists throughout the […]

(Beyond Pesticides, January 3, 2011) The United Nations Food and Agriculture Organization (FAO) has announced the initial results of an experimental program in West Africa that reduces farmers’ use of pesticides and chemical inputs while increasing yields and income. The program, entitled the West African Regional Integrated Production and Pest Management Program, evaluated the use of ecological management versus conventional practices on vegetables, cotton, and grain crops in the countries of Benin, Burkina Faso, Mali, and Senegal. The evaluation shows dramatic decreases in pesticide usage, reduced environmental degradation, as well as increases in farmer income through higher yields and reduced inputs. According to the FAO (which previously advocated for organic agriculture), the goals of the program, which is ongoing, are “building local farming capacity, improving food security and livelihoods, and raising awareness of negative externalities and positive alternatives.” These are accomplished through training farmers in what the FAO calls integrated production and pest management (IPPM) methods so that they can reduce toxic inputs and pollution while enhancing soil fertility and retaining more of their income. The particular methods of IPPM include reducing pesticide usage, soil building through incorporation of compost and manure and the planting of cover crops, careful monitoring […]

(Beyond Pesticides, December 17, 2010) Secretary of Agriculture Tom Vilsack disappointed organic farmers and consumers, as well as environmentalists when he announced December 16, 2010 that the U.S. Department of Agriculture was considering “deregulating” a genetically engineered crop that is tied to genetic drift, superweeds, and the use of a hazardous pesticide -Monsanto’s genetically-engineered (GE) Roundup (glyphosate) Ready (RR) alfalfa. The Department released a 2,400 page Environmental Impact Statement (EIS) as required by a 2007 Federal District Court decision and upheld by both 2009 Ninth Circuit Court of Appeals and June 2010 U.S. Supreme Court rulings. The litigation was led by the Center for Food Safety, and joined by Beyond Pesticides, and other groups, including organic seed companies and producers. A broad coalition of groups has previously called for USDA to deny approval of Monsanto’s genetically engineered, Roundup Ready alfalfa (GE alfalfa). In March, more than 200,000 people submitted comments to USDA critiquing the substance and conclusions of its Draft EIS on GE Alfalfa. In addition, more than 300 public interest organizations, farmers, dairies, retailers and organic food producers from the U.S. and Canada delivered a critical letter to USDA. U.S. Senator Patrick Leahy (D-Vt.) and Rep. Peter DeFazio (D-OR), […]

(Beyond Pesticides, November 9, 2010) In October, 11 groups representing chemical-intensive and biotech-based agricultural interests dropped out of the process to develop an American National Standards Institution (ANSI)-certified standard for sustainable agriculture, facilitated by the Leonardo Academy. The groups cited committee dominance “by environmental groups, certification consultants, agro-ecology and organic farming proponents” and an opposition to “modern agriculture” as their main reasons for resigning. The drop-outs include the American Farm Bureau Federation, American Frozen Food Institute, American Soybean Association, California Seed Association, CropLife America, Environmental Intelligence, Inc., Grocery Manufacturers Association, National Corn Growers Association, National Cotton Council of America, and United Fresh Produce Association. “These groups relentlessly pushed for molding the standard to validate industrial agriculture and high tech genetic manipulation,” says Jeff Moyer, Farm Director at the Rodale Institute and active member of the committee. “The model they propose confuses short-term profits for sustainability.” Responding to the resignation, a Leonardo Academy spokesperson said it, “recognizes their perspective but disagrees with their assessment.” The Academy believes their ANSI-approved standard development process provides the balance across interest categories needed for developing a Sustainable Agriculture Standard that will be widely implemented and successful in the marketplace. They state that the balance is […]

(Beyond Pesticides, November 8, 2010) After numerous scandals involving China’s industrialized food supply, a new movement is afoot in the world’s most populous nation toward local, organic, and sustainable food. According to a promising Washington Post report, “Young Chinese farmers sowing seeds for organic revolution,” many of the organic farmers working to meet the growing demand are urban professionals seeking an escape from fast paced city life. The overuse of pesticides in industrialized agriculture has created numerous problems for people and the environment. Pesticide use has been linked to many diseases including numerous types of cancer, Parkinson’s, and learning disabilities. In addition pesticides are also dangerous to wildlife. Pesticides often kill non-target organisms that may be beneficial to farmers, such as predatory insects. Organic agriculture is an ecological approach to farming that does not rely on or permit toxic pesticides, chemical fertilizers, genetically modified organisms, antibiotics, sewage sludge, or irradiation. Instead of using these harmful products and practices, organic agriculture utilizes techniques such as cover cropping, crop rotation, and composting to produce healthy soil, prevent pest and disease problems, and grow healthy food and fiber. Just as in the United States, demand for local and organic food is growing in […]

(Beyond Pesticides, November 5, 2010) At its October 2010 meeting, the U.S. Department of Agriculture’s (USDA) National Organic Standards Board (NOSB) passed a recommendation directing the USDA National Organic Program to prohibit engineered nanomaterials from certified organic products as expeditiously as possible. The NOSB, the expert citizen advisory panel set up by Congress to advise the USDA on organic policy, reviews materials and provides recommendations to the NOP on what should be allowed and prohibited in organic agriculture and processing, as materials and methods change over time. Organic advocates, members of the organic industry and the NOSB are concerned that engineered nanomaterials could contaminate organic food and fibers. Nanotechnology is the science and manipulation of chemical and biological materials with dimensions in the range from 1-300 nanometers (according to the NOSB recommendation). Because nanotechnology is such a new field, nanomaterials were not specifically addressed when the Organic Foods Production Act was passed in 1990. While synthetic materials are already prohibited from organic production, unless specifically exempted, the NOSB recommendation will pressure the NOP to block petitions seeking an exemption and keep nanomaterials out of food packaging and contact surfaces. The recommendation also provides clarification that nanosized particles of synthetic substances […]

(Beyond Pesticides, November 4, 2010) A new study finds that organically grown onions, carrots, and potatoes generally have no higher levels of antioxidants and related substances than vegetables grown with traditional fertilizers and pesticides, disputing other studies and failing to examine pesticide residues or other essential vitamin content. The study also does not consider the environmental and health impacts of conventional, chemical-based production systems. Researchers analyzed antioxidants termed “polyphenols” from onions, carrots and potatoes grown using conventional and organic methods and found no differences in polyphenol content for organic vs. traditional methods of growth. The study, “Effects of Organic and Conventional Growth Systems on the Content of Flavonoids in Onions and Phenolic Acids in Carrots and Potatoes” was published in the American Chemical Society’s bi-weekly Journal of Agricultural and Food Chemistry. In this study, onions, carrots, and potatoes were cultivated in two-year field trials in three different geographical locations, comprising one conventional and two organic agricultural systems. The contents of two kinds of polyphenols, flavonoids and phenolic acids in plants were analyzed by pressurized liquid extraction and high-performance liquid chromatography−ultraviolet quantification. Polyphenols have one or more phenol units in their chemical structure and are a group of secondary plant metabolites. […]