Bioactivity, adsorption and persistence of pretilachlor in paddy field soils

摘要

The effects of environmental factors on bioactivity, adsorption and persistence of pretilachlor were studied in the laboratory and greenhouse using cucumber(Cucumis sativus L.)as the bioassay species. The three soils studied viz. Bernam, Selangor and Sabrang series were chosen for their different characteristics. The half-life of pretilachlor decreased from 10.24 to 4.90 days as temperature increased from 25 deg. C to 35 deg. C in the Selangor Series soil and from 10.86 to 7.63 days in the Bernam Series soil at 60/100 field capacity.