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  • Title: Butachlor degradation in tropical soils: effect of application rate, biotic-abiotic interactions and soil conditions.
    Author: Pal R, Das P, Chakrabarti K, Chakraborty A, Chowdhury A.
    Journal: J Environ Sci Health B; 2006; 41(7):1103-13. PubMed ID: 16923594.
    Abstract:
    The degradative characteristics of butachlor (N-Butoxymethyl-2-chloro-2',6'-diethyla- cetanilide) were studied under controlled laboratory conditions in clay loam alluvial (AL) soil (Typic udifluvent) and coastal saline (CS) soil (Typic endoaquept) from rice cultivated fields. The application rates included field rate (FR), 2-times FR (2FR) and 10-times FR (10FR). The incubation study was carried out at 30 degrees C with and without decomposed cow manure (DCM) at 60% of maximum water holding capacity (WHC) and waterlogged soil condition. The half-life values depended on the soil types and initial concentrations of butachlor. Butachlor degraded faster in AL soil and in soil amended with DCM under waterlogged condition. Microbial degradation is the major avenue of butachlor degradation from soils.
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