pesticide-contamination
Pesticide contamination refers to the presence of synthetic or natural chemical agents, used to control pests and diseases, accumulating in plant tissues, soil, or water systems beyond intended levels. In plant science, understanding contamination dynamics is critical because pesticides can disrupt plant physiology, alter soil microbiomes that support nutrient uptake, and affect crop safety and yield. Researchers study uptake pathways, metabolic detoxification, and residue persistence to develop safer agricultural practices and more resilient crop varieties.
PubMed · 2026-04-01
A sweeping study of Indian farmland soils found pesticide contamination in nearly every site tested, including organic farms and forests. Toxic chemical mixtures are seeping deeper into the soil than previously measured, posing serious risks to earthworms and broader soil ecosystems.
98.6% of surface soil samples were contaminated with pesticide residues, including sites under organic management and forest reference areas.
Pesticide metabolites (breakdown products) frequently exceeded their parent compound levels, with fipronil, neonicotinoid, atrazine, and DDT metabolites among the most common — suggesting persistent, underestimated risks.
80% of sites showed high theoretical risk to earthworms, with sugarcane and orchard systems being the most hazardous land uses.
