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KMID : 0903519870300040351
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1987 Volume.30 No. 4 p.351 ~ p.356
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Movement of Herbicide Pretilachlor in Plants and Soils
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Abstract
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This study was conducted to investigate the absorption and translocation of pretilachlor [2-chloro-2, 6-diethyl-N-(n-propoxyethyl)-acetanilide] in plants and to evaluate the mobility in soil using the ^(14)C-or non-labelled compound in laboratory. Rice plant(Oryza sativa L.) was very tolerant to pretilachlor. Echinochloa crus-galli P. Beauv. was completely con trolled by pretilachlor at 60g a.i./10a. At the 120g a.i./l0a, growth of Cyperus serotinus Rottb. and Sagittaria pygmaea Miq. was inhibited by 75% and 25%, respectively. The growth inhibition depended on absorbed amount of ^(14)C pretilachlor. The greatest concentration of ^(14)C was found in E. crus-galli, whereas the lowest was determined in rice plant. The rate of absorption and translocation in E. curs-galli was faster than in rice plan. Pretilachlor moved to 6㎝ deep in sandy clay loam, clay loam and loam soils, but to l0㎝ in sandy loam soil. In the soils herbicide-treated layer was found 0 to 2㎝ profile.
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