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2001•Journal of Henan Vocation-technical Teachers CollegeRequires access

Study on the Effect of Several Fungicides in Corn Leaf Spot Affected by Curvularia lanata

Ding Zhang

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Abstract

The effect of 9 kinds of fungicides in conidia germination and mycelial growth of Curvularia lanata were studied through plate investigation indoors.The results showed that mancozeb,chlorothalonil and tuijunte had strong inhibition to conidia germination,with EC 50 value of 1.61μg/ml, 2.11μg/ml and 8.23μg/ml respectively; Tuijunte, carbendazim sulphur, opsin melthyl and carbendazim showed strong refrain effect on the mycelial growth, with EC 50 value of 10.58μg/ml, 24.76μg/ml ,30.34μg/ml and 34.21μg/ml respectively.The results of field experiments suggested that Tuijunte showed the best prevention and control effect(PCE),with the PCE value of 90.90%;chlorothalonil, carbendazim, carbendazim sulphur, topsin methyl, thiram, pudefeng and mancozeb showed better PCE,with the PCE value of 86.10%～75.52%.

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The effect of 9 kinds of fungicides in conidia germination and mycelial growth of Curvularia lanata were studied through plate investigation indoors.The results showed that mancozeb,chlorothalonil and tuijunte had strong inhibition to conidia germination,with EC 50 value of 1.61μg/ml, 2.11μg/ml and 8.23μg/ml respectively; Tuijunte, carbendazim sulphur, opsin melthyl and carbendazim showed strong refrain effect on the mycelial growth, with EC 50 value of 10.58μg/ml, 24.76μg/ml ,30.34μg/ml and 34.21μg/ml respectively.The results of field experiments suggested that Tuijunte showed the best prevention and control effect(PCE),with the PCE value of 90.90%;chlorothalonil, carbendazim, carbendazim sulphur, topsin methyl, thiram, pudefeng and mancozeb showed better PCE,with the PCE value of 86.10%～75.52%.

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Available abstract

The effect of 9 kinds of fungicides in conidia germination and mycelial growth of Curvularia lanata were studied through plate investigation indoors.The results showed that mancozeb,chlorothalonil and tuijunte had strong inhibition to conidia germination,with EC 50 value of 1.61μg/ml, 2.11μg/ml and 8.23μg/ml respectively; Tuijunte, carbendazim sulphur, opsin melthyl and carbendazim showed strong refrain effect on the mycelial growth, with EC 50 value of 10.58μg/ml, 24.76μg/ml ,30.34μg/ml and 34.21μg/ml respectively.The results of field experiments suggested that Tuijunte showed the best prevention and control effect(PCE),with the PCE value of 90.90%;chlorothalonil, carbendazim, carbendazim sulphur, topsin methyl, thiram, pudefeng and mancozeb showed better PCE,with the PCE value of 86.10%～75.52%.

Key concepts: Carbendazim, Mancozeb, Fungicide, Thiram, Chlorothalonil, Germination, Horticulture, Curvularia

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