数種除草剤が水稲に及ぼす形態的影響とジメピペレートの薬害軽減効果 : 第1報ベンスルフロンメチルとそのジメピペレート混合剤の形態的影響と苗の植付深度

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Morphological effects of bensulfuronmethyl application on rice plant and their safening by mixture with dimepiperate were investigated in relation to the transplanting depth of rice seedlings. 1 ) Morphological responses of rice to bensulfuronmethyl application consisted of the inhibition of leaf sheath and blade elongation, leaf blade narrowing, and decrease in the tiller number of shoots. In the root systems, the elongation of crown roots, which emerged just after bensulfuronmethyl application, was markedly inhibited. 2 ) When rice seedlings were transplanted at shallow depths in soil, the herbicide applications, resulted in severe injury and the degree of growth inhibition of the seedlings increased with the depth of transplanting as follows ; 0 cm (seedlings with roots above the soil surface in paddy water) > 0 cm (seedlings on the soil surface with roots buried into the soil) > 1 cm. 3 ) Application of a mixture of bensulfuronmethyl with dimepiperate alleviated the growth inhibition of rice in shoots and roots. So, safening effects of dimepiperate to the crop were clearly. 4 ) Morphological effects of herbicides on rice were investigated in detail by evaluating the degree of injury of each organ, in sub dividing plants in shoot units. Injury of both rice shoots and roots appeared in simultaneously growing organs of successive shoot units, and it was clear that there was a close relation between the degree of injury of shoots and of roots.
日本雑草学会の論文
1988-12-26

数種除草剤が水稲に及ぼす形態的影響とジメピペレートの薬害軽減効果 : 第1報ベンスルフロンメチルとそのジメピペレート混合剤の形態的影響と苗の植付深度

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数種除草剤が水稲に及ぼす形態的影響とジメピペレートの薬害軽減効果 : 第1報 ベンスルフロンメチルとそのジメピペレート混合剤の形態的影響と苗の植付深度

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数種除草剤が水稲に及ぼす形態的影響とジメピペレートの薬害軽減効果 : 第1報ベンスルフロンメチルとそのジメピペレート混合剤の形態的影響と苗の植付深度