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Sensitivity of Phytophthora nicotianae to Nine Fungicides

Yafeng Gou

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Abstract

By the mycelium growth rate methods,the sensitivity of nine fungicides to the vanilla Phytophthora nicotianae were tested. The results showed that nine fungicides displayed various inhibition effects on mycelium growth of vanilla Phytophthora nicotianae,while dimethomorph 50% WP,metalaxyl propamocarb 25% WP,dimethomorph mancozeb 69% WP proved to be the most effective fungicide with EC50 values of 0.3855,0.4074 and 2.8184 mg/L respectively and followed by those of copper metalaxyl 50% WP and cymoxanil mancozeb 72% WP.

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What this paper is about

By the mycelium growth rate methods,the sensitivity of nine fungicides to the vanilla Phytophthora nicotianae were tested. The results showed that nine fungicides displayed various inhibition effects on mycelium growth of vanilla Phytophthora nicotianae,while dimethomorph 50% WP,metalaxyl propamocarb 25% WP,dimethomorph mancozeb 69% WP proved to be the most effective fungicide with EC50 values of 0.3855,0.4074 and 2.8184 mg/L respectively and followed by those of copper metalaxyl 50% WP and cymoxanil mancozeb 72% WP.

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Available abstract

By the mycelium growth rate methods,the sensitivity of nine fungicides to the vanilla Phytophthora nicotianae were tested. The results showed that nine fungicides displayed various inhibition effects on mycelium growth of vanilla Phytophthora nicotianae,while dimethomorph 50% WP,metalaxyl propamocarb 25% WP,dimethomorph mancozeb 69% WP proved to be the most effective fungicide with EC50 values of 0.3855,0.4074 and 2.8184 mg/L respectively and followed by those of copper metalaxyl 50% WP and cymoxanil mancozeb 72% WP.

Key concepts: Phytophthora nicotianae, Metalaxyl, Mancozeb, Fungicide, Mycelium, Horticulture, Biology, Phytophthora

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