• Title/Summary/Keyword: early and late post-emergence uses

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Herbicide Combinations of Oxyfluorfen and Paraquat for Early and Late Post-emergence Uses in Pear Orchard (배(梨) 과수원(果樹園)의 잡초방제(雜草防除)를 위한 제초제(除草劑) Oxyfluorfen과 Paraquat의 혼용효과(混用效果)에 관한 연구(硏究))

  • Guh, J.O.;Kim, K.W.;Pyon, J.Y.;Kim, I.K.
    • Korean Journal of Weed Science
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    • v.2 no.2
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    • pp.160-168
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    • 1982

  • Nine combined dosal levels of Paraquat and Oxyfluorfen were compared on pear orchard to control Digitaria adscendens Henr, and others, namely Commelina communis L., Erigeron annuus L., Echinochloa crusgalli P. Beauv var. oryzicola Ohwi, etc.. By treating as an early-postemergence, the mixtures showed higher control effects than 85% of the whole weeds, but the control effects in the mono-treatments of respective herbicide were only 20% or so. On the other hand, as a late-postemergence, the control rates were fluctuated from 31% to 94%. However, there was no significant difference in Spearman's rank correlation coefficients between both efficacies. Thus indicate that the action style of synergistic effect was not influenced by the application time, and the levels of mixtured dosages should be adjusted by the application times and interfering conditions.

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