2009•Xinjiang nongye kexueRequires access
Determination of toxicity in Mycospharella melonis by new fungicides in Xinjiang.
Jingzhe Hao, Fan Yongmei, Jing ZhongMei, Zhang Juna, Wang HuiQing, Zhang Mingzhi, Zeng JiYong, Yuhua Wu
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Abstract
This study was designed to measure the inhibition effect of 5 kinds of concentrations of 7 new fungicides with 0.625-10 g/L on Mycospharella melonis by growth speed rate.The results indicated that the inhibition effect of biological fungicide ZH was the strongest,whose inhibition rate with middle concentration 10-1.25 g/L on Mycospharella melonis was 100%.In the test,the inhibition rate with the lowest concentration 0.625 g/L reached 89.85% and followed by Puhaiyin.The inhibition rate of both fungicides reached over 90% when their concentration was 10-25 g/L.Mycospharella melonis pathogen were in high concentration.Based on the spss data,the proper order of the effective element EC50 of the 7 kinds of fungicides were as follows:Thipanale MethylXiumisoCarben dazimKresoxim methylFenarimolZHRovra,among which Thiphanate Methyl 2.507 μg/mL was the highest one,the lowest was Rovral.