Hidden Underground Pathways Allow Farm Pesticides to Slip Into Streams, Study Warns
Chemicals sprayed on farm fields are reaching nearby streams not only through surface runoff but also via hidden underground channels, according to new research from Penn State University.
The study, published in the Journal of Environmental Quality, found that while vegetative streamside buffers can reduce some pesticide pollution, they are ineffective against chemicals that travel through groundwater especially in landscapes shaped by porous, fractured bedrock.
For years, the U.S. Department of Agriculture has promoted riparian buffers strips of grass, shrubs, and trees planted along waterways as a natural way to protect streams from agricultural runoff. These vegetative zones slow surface water, trap sediment, and reduce nutrient pollution.
But pesticides be...









