The Dispatch’s description of a new “superweed” spotted in Ohio’s agricultural fields is alarming but not surprising (“Agricultural Armageddon,” Oct. 20). As pesticide use has increased, the number of correlated pesticide-resistant insects, pathogens and weeds has risen dramatically.
Today, an estimated 500 species of insects are resistant to at least one insecticide, and insecticide resistance continues to grow. Pesticide-resistant plant diseases and weeds are following the same pattern. As a result of the inevitable and inescapable biological facts of genetic variability, selection and resistance, farmers are caught on a “pesticide treadmill,” using more toxic synthetic chemicals or chemicals in greater quantities to try to stay ahead of pests and weeds.
Because of the increasing impotency of Roundup in the face of superweeds, agri-chemical giants like Monsanto and Dow are seeking approval for corn, soybean and cotton varieties engineered for resistance to the herbicides 2, 4-D and Dicamba, which are susceptible to drift and pose a serious threat to sensitive fruit and vegetable crops.
Weeds, pests and disease are significant problems for every farmer. Yet some have chosen alternative ways of controlling them that do not lead to superweeds or pollute our air, water and soil. Organic farmers control pests through agro-ecological systems that rely on crop rotations to break pest cycles, well-nourished soils to grow crops resistant to diseases and management practices that reduce weed pressure. This approach not only protects the environment and public health, but reduces costs and increases returns per acre.
Our experience with resistant pests, be they insects, pathogens or weeds, demonstrates the truth of ecologist Paul Ehrlich’s observation that “nature bats last.” Organic farmers have chosen to get on the same team as nature, rather than attempting to overcome it with synthetic chemicals.CAROL GOLAND Executive Director Ohio Ecological Food and Farm Association