新diphenylether系除草剤HE-314に関する研究 : 第1報殺草特性とイネ科属間選択性

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概要

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• (1) In the case of pre-emergence application, the effect of HE-314 (3-methylphenyl-4'-nitrophenyl ether) EC was slightly inferior to NIP EC (TOK EC). The herbicidal effect of HE-314 EC applied on flooded condition was greater than on dry land condition. (2) HE-314 has a contact herbicidal effect. (3) Being different from the other diphenylether type herbicides, HE-314 has a selective herbicidal effect between rice plant and barnyard grass in the case of post-emergence application. This selective herbicidal effect is not lost under flooded condition and even greater than under dry condition, while Propanil has no selectivity under flooded condition. (4) The selectivity between rice and barnyard grass under flooded condition is highest at 2 to 4 leaf stages of rice plant and barnyard grass, respectively. (5) HE-314 acts on both plumules and roots, while NIP (TOK) acts on only plumule. Only in the case of plumules, the selective herbicidal action of HE-314 among Gramineae was observed, while not in the case of the action on roots. (6) HE-314 has a very strong action on the retardation of root emergence and of its elongation, while other diphenylether herbicides have no effect on roots. But the damage caused by absorption through roots is so little as NIP (TOK). (7) Although HE-314 has a very strong action on roots under solution culture, the action was reduced when mixed with soil. It is considered that the soil itself must be related to the action in some way, but light seems not to give any influence to the action. (8) No selective action was recognized between rice and barnyard grass on the retardation of root emergence and elongation and on the absorption action from root. Therefore, it is obvious that the selective herbicidal effect of HE-314 is due to the action on leaf and stem. (9) HE-314 seems to be a contact type herbicide, although there is a little tendency of translocation in the body of barnyard grass. (10) The herbicidal selectivity of HE-314 among species of weeds, at pre-emergence in flooded condition and post-emergence treatment in dry land condition was in the following order. Ordinary broad leaf weeds >__= Gramineae > Spike rush While, at the treatment on flooded condition there was a tendency as follows. Gramineae >__= Ordinary broad leaf weeds > Spike rush

• 日本雑草学会の論文
• 1967-12-25

著者

• 早坂 利将

  三洋貿易株式会社

関連論文

• 新diphenylether系除草剤HE-314に関する研究 : 第2報各種水管理条件と殺草力との関係
• 新diphenylether系除草剤HE-314に関する研究 : 第1報殺草特性とイネ科属間選択性

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