13
May
(Beyond Pesticides, May 13, 2025) A study in Environmental Pollution examines ecological and health risks in farmland soil with pesticide contamination. “Although agricultural soil pesticide residues have long threatened the environment, a relatively complete system for evaluating their health and ecological risks has not yet been developed,” the authors state. In addressing this research gap, the study finds that “more than ten pesticides were detected in 98.62% of the soil samples, which changed the soil environment” and threatens the health of the soil microbiome. The authors continue, “This study investigated the correlation between pesticide residue risks and soil ecological security and human health, revealed the response characteristics of soil microbial communities under pesticide stress, and identified microbes strongly related to pesticide ecological risks.” Pesticides, as the authors emphasize, “inevitably pollute agricultural soil, affect the ecological environment, and pose a threat to human health.” (See studies here, here, and here.) With this in mind, they assess 50 selected pesticides in 145 soil samples from agricultural land in Zhejiang Province, China and calculate the associated risks to ecosystems and public health. In describing the importance of this research, the authors explain: “Pesticides are prone to leakage and drift in environmental media, turning […]
Posted in Agriculture, Bifenthrin, Biodiversity, Cancer, Chlorpyrifos, Ecosystem Services, Imidacloprid, indoxacarb, Microbiome, Pesticide Mixtures, soil health | No Comments »
09
May
(Beyond Pesticides, May 9, 2025) Research in Advances in Modern Agriculture showcases how pesticide residues can threaten the health of soil nematodes and cause phytotoxic effects in cucumber plants. In assessing both the sprayed vegetables and the organisms within the soil, the authors find a negative correlation between pesticide exposure and soil nematode populations that is proportional to the application rates of the chemicals, as well as alterations in plant development. These impacts highlight potential wider effects on crop productivity, biodiversity, and human health. “Nematodes, which are microscopic worms inhabiting the soil, are vital contributors to soil vitality and the cycling of nutrients,” the authors share. “Nonetheless, the non-selective and widespread application of pesticides can negatively impact these organisms, leading to potential detriments in soil quality and plant vitality.” “Pesticide residues have the propensity to be absorbed and progressively accumulate as they traverse from soil to plants and subsequently to humans,” the researchers state. They continue, “The specific characteristics of the pesticide and its interactions with the body across different levels dictate whether it will be excreted without causing significant harm or if it will accumulate, potentially leading to enduring subclinical and clinical ramifications.” The impacts vary widely between organisms […]
Posted in Agriculture, Beneficials, Biodiversity, Diazinon, Ecosystem Services, Endosulfan, Malathion, methoxychlor, Microbiome, Pesticide Residues, soil health, Soil microbiome | No Comments »
29
Jan
(Beyond Pesticides, January 29, 2025) A team of researchers recently discovered the benefits of using natural biofertilizers and biostimulants in the production of tomatoes, the results of a two-year study featured in the Journal of the Science of Food and Agriculture. When the researchers added a biofertilizer consisting of fungi and bacteria, and/or a biostimulant made of algae, the tomato plants grew bigger, faster, and produced significantly more (and sweeter) fruit than plants that received neither treatment. This research, published in August 2024, adds to a growing body of evidence that non-synthetic, natural fertilizer alternatives can support a global transition away from the toxic chemical treadmill of modern commercial farming. [A note about the definition of plant biostimulants. They are substances or microorganisms that enhance natural plant processes, improving resource efficiency, stress tolerance, and overall growth without directly providing nutrients or controlling pests. There is ongoing confusion regarding a lack of a set definition, as some biostimulants overlap in function with fertilizers or biocontrol agents. The definition of biofertilizers—also referred to as inoculants, bioinoculants, or bioformulations—are products containing beneficial microorganisms in active or inactive forms. These microorganisms, applied singly or in combination, colonize the rhizosphere or plant tissues to enhance […]
Posted in Agriculture, Alternatives/Organics, biofertilizers, Biofertilizers, Biostimulants, Fertilizer, Integrated and Organic Pest Management, Microbiome, NOSB National Organic Standards Board, Plant growth promoting microorganisms (PGPMs), Regenerative, soil health | No Comments »
10
Dec
(Beyond Pesticides, December 10, 2024) Scientists from the Engineering Research Center of Protection and Utilization of Plant Resources at Shenyang Agricultural University in China reveal adverse effects of imidacloprid on soil communities in a study published in Pesticide Biochemistry and Physiology. The researchers highlight risks to nematodes from imidacloprid exposure in maize soil, as well as potential resistance mechanisms that impact not only nematode populations but also overall soil health. Maize, or corn, a productive crop grown worldwide, is a source of food and biofuel. In assessing the soil and species in maize fields after exposure to imidacloprid at various concentrations, the study researchers assess the impact of neonicotinoid insecticides on nontarget organisms and the health of soil communities. The assessment includes an evaluation of nematodes’ survival, growth, reproduction, and chemotaxis/locomotion behavior. With a statistical analysis of lipid and lipofuscin accumulation, acetylcholinesterase (an enzyme necessary for neurotransmission) activity, and gene expression levels, the study results show that imidacloprid induces: significantly reduced abundance and diversity of nematode species. negative effects on body length, reproduction, locomotion, lipid accumulation, lipofuscin accumulation, and acetylcholinesterase activity in Caenorhabditis elegans ( elegans). the upregulation of gpa-1, cyp-35a2, fat-2, fat-6, hsp-16.41, and hsp-16.2, along with the downregulation […]
Posted in Beneficials, Biodiversity, Biological Control, Ecosystem Services, Epigenetic, Imidacloprid, Metabolites, Microbiata, Microbiome, Nematodes, Pesticide Residues, Resistance, soil health, Soil microbiome | No Comments »
