野菜畑における土壌処理粒状除草剤の効果と土壌中濃度の変化

概要

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Herbicidal effects of soil treatment with fine granules of five herbicides and their residues in cabbage and ordinary crop field crops were investigated. 1. Nitralin, alachlor, pendimethalin and trifluralin applied to fields with consecutive cabbage croppings controlled more effectively the emergence and development of weeds in both the summer and winter croppings (Table 2). 2. Alachlor-linuron granules applied to fields cultivates with ordinary crops such as corn, sweet potato and peanuts in summer and trifluralin applied to cabbage fields in winter controlled effectively weeds (Table 3). 3. Although each herbicide applied to the summer cropping was not detected in soil after 140 days, concentration high enough to inhibit weed emergence was determined in soil even after 200 days in the winter cropping (Table 4,5). In the summer cropping, the pattern of persistence of herbicides in soil differed from that in winter (Fig. 2).
日本雑草学会の論文
1987-08-31