チオクロルメチル〔3-(3-chloro-4-chlorodifluoromethylthiophenyl)-1, 1-dimethylurea〕の選択殺草機構 : 1. 殺草活性と吸収, 移行

概要

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In an attempt to survey a selectivity of thiochlormethyl with wide plant spectrum and to clarify the mechanism of its selectivity, absorption and translocation were investigated. In root application, rice, barnyardgrass, wheat, barley, cucumber, radish and soybean plants were found to be tolerant, whereas tomato plant was shown susceptible. It was suggested that selectivity of root-applied thiochlormethyl among those plants was apparently due to the differential concentrations of thiochlormethyl in the shoots parts, which were caused by the differential rates of absorption and translocation. On the other hand, in foliar application, it was shown that rice and wheat plants were tolerant, while tomato, cucumber, radish and soybean plants were shown to be susceptible. Barnyardgrass and barley plants were shown intermediate. Differential rates of incorporation directly into shoot tissues were apparently the dominant factor determining selectivity.
日本雑草学会の論文
1977-07-25