Effect of Pencycuron on Microbial Parameters of Waterlogged Soil |
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| Authors: | R PAL K CHAKRABARTI A CHAKRABORTY A CHOWDHURY |
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| Institution: | 1. Department of Agricultural Chemistry and Soil Science , Calcutta University , Calcutta , India;2. Department of Agronomy , Bidhan Chandra Krishi Viswavidyalaya , Mohanpur , West Bengal , India |
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| Abstract: | A laboratory study was conducted to monitor the effect of pencycuron 1-(4-chlorobenzyl)-1-cyclopentyl-3-phenylurea] on microbial parameters of alluvial (AL) soil (Typic udifluvent) and coastal saline (CS) soil (Typic endoaquept) under waterlogged condition. Pencycuron at field rate (FR), 2FR and 10FR affected the microbial biomass C (MBC), soil ergosterol content and fluorescein diacetate hydrolyzing activity (FDHA) differentially. The DCM amendment did not seem to have any counteractive effect on the toxicity of pencycuron on the microbial variables. The change in microbial metabolic quotient (qCO2) and microbial respiration quotient (QR), indicated pencycuron induced disturbance at 10FR. Present study revealed that the metabolically activated microbial population was more suppressed compared to the dormant population. |
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| Keywords: | Pencycuron Waterlogged soil Microbial biomass Ergosterol Microbial metabolic quotient Fluorescein diacetate hydrolyzing activity |
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