Screening Of Fungicides Against Botrytis Cinerea Of Vegetables In The Shed In Zichang Country

In recent years, along with the adjustment of industrial structure，the area of vegetablecultivation in ZiChang country has been enlarged year by year, and it has become one of themain routes of the local farmers’ income. But due to the occurrence of grey mould, thedevelopment of the industry has been influenced seriously. Therefore, finding suitablegermicides has great significance on the development of local industry and increasing farmers’income.In order to control the Botrytis cinerea of tomatoes,cucumbers and sweet peppers inZiChang country, we choosed50%procymidone WP,50%carbendazim WP,75%chlorothal-onil WP,70%thiophanate methyl WP,40%yrimethanil SC,50%ronilan WP and50%boscalid WG which commonly used in the production as the tested fungicides to make ascreening test in the filed. The results are as follows:40%pyrimethanil(pyrimethanil) SC and50%procymidone WP can be used to controlCucumbers Botrytis cinerea with efficacy over80%than others;50%vinclozolin WP can beused to control the sweet pepper botrytis;50%boscalid aqueous dispersions has a goodtreatment on Botrytis cinerea. Botrytis cinerea may be resistant to70%thiophanate methyl,thus leading to its efficacy gradually reduce, so that we advised to decrease its usingfrequences or use it with other agents.