A laboratory study of the persistence of carbofuran and its 3-hydroxy- and 3 keto-metabolites in sterile and natural mineral and organic soils.
In a laboratory study, the persistence of carbofuran and its 3-hydroxy- and 3-keto-metabolites was examined separately over 16 wk in sterile and natural organic (muck) and mineral (loam) soils. Carbofuran was relatively persistent in sterile soils; at 8 wk 77% remained in the sterile muck and about 50% remained in the sterile loam. In the natural muck 25% of initial carbofuran remained at  wk whereas in the natural loam carbofuran had completely disappeared by that time. The 3-ketocarbofuran was very short-lived even in the sterile muck where only 50% remained at 1 wk. The 3-hydroxycarbofuran degraded appreciably on zero day in the natural soils (with conversion to 3-keto-carbofuran) and about 90% had disappeared in 1 wk. A more detailed study of the persistence of 3-hydroxycarbofuran in the natural soils showed complete disappearance in 2 days in loam and in 3 days in muck. The 3-ketocarbofuran produced from the 3-hydroxy-carbofuran reached a maximum concentration in 1 day and then disappeared within 4 days in loam and about 1 wk in muck.
D000192:Actinomycetales; D001419:Bacteria; D002235:Carbofuran / Q000031:analogs & derivatives / Q000032:analysis / Q000378:metabolism; D004355:Drug Stability; D005658:Fungi; D007306:Insecticides / Q000378:metabolism; D010573:Pesticide Residues / Q000032:analysis; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000032:analysis*; D013997:Time Factors
D007306:Insecticides; D010573:Pesticide Residues; D012989:Soil Pollutants; C032069:3-ketocarbofuran; C028403:3-hydroxycarbofuran; D002235:Carbofuran