Abstract
Abstract Loss of carbofuran from paddy water and in flooded soil was studied in the laboratory and under field conditions. Carbofuran was rapidly hydrolyzed to carbofuran phenol in just five days after its application to paddy water. Hydrolysis of carbofuran appeared to be primarily due to chemical, but degradation of carbofuran phenol was biological. Previous applications of carbofuran to paddy water had no appreciable effect on the rate of degradation of the insecticide. However, in soil from the carbofuran‐treated plot, a more rapid degradation of carbofuran occurred only after three weeks of incubation under laboratory conditions. Incubating paddy water under light or dark conditions revealed that photo‐decomposition of carbofuran may not be occurring. The data furnished no evidence that microbial acclimatization plays a major role in the dissipation of carbofuran applied as granules to paddy water.
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