マレイン酸ヒドラジド(MH)の植物体内の行動 : (1)多年生植物における分布と残留

概要

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The authors already succeeded in the use of maleic hydrazide (MH), a plant growth regulator, as a herbicide for perennial weeds. This study was carried out to investigate the behaviour of MH in the reproductive organ of the underground portion in perennial plants. MH residue in the underground portion of perennial plants was determined after foliar-application in autumn. In dock [Rumex obtusifolius L.], a high concentration was observed one month after application in the upper part of rhizome which is the most active portion for reproduction. MH was little degraded in the underground portion during nine month (until next August), and the growth of rhizome was continuously inhibited. In sweet potato [I pomoea Batatas Lam. var. edulis Makino], a higher concentration was detected in the apex of the root tuber which had many young buds. MH did not diminished during ten months from after application until next August, then the growth of root tuber was severely inhibited. MH was gradually inactivated in the underground portion of dandelion [Taraxacum officinale Weber] after application in summer, but it was little diminished in that portion when the upper portion was cut.
日本雑草学会の論文
1979-06-25