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印度棗柑桔葉螨之發生及藥劑防治

Seasonal Occurrence and Chemical Control of the Citrus Red Mite (Panonychus Citri (McGregor)) on Indian Jujube

摘要


柑桔葉蟎(Panonychus citri (Mc Gregor))為本省南部印度棗主要害蟎,全年當中除了3月至4月中旬受棗樹修枝、嫁接外均有發生,於乾旱季節(10~12月)發生最嚴重。發現其天敵有羅氏小黑瓢蟲(Stethours loi Sasaji)、鄭氏小黑瓢蟲(Stethorus chengi Sasaji)、小黑隱翅蟲(Oligota oviformis (Casey))、廣島氏小黑瓢蟲(Stethorus hiroshimai Sasaji)、黃偽瓢蟲(Saula japonica Gorham)、及溫氏捕植蟎(Amblyseius womersleyi Schicha),其中以羅氏小黑瓢蟲及溫氏捕植蝸出現頻度較高。田間二年各測試九種殺蟎劑之防治效果,第一年以10% Fenpropathrin EC、30% Propargite WP及20% Benzoximate EC防治本瞞效果優異,第二年變更部份藥劑試驗結果仍以10% Fenpropathrin EC、30% Propargite WP及25% Oxythioquinox WP效果較優異。

關鍵字

印度棗 柑桔葉蟎 天敵 殺蟎劑

並列摘要


Citrus red mite (Panonychus citri (McGregor)) is one of the destructive pests on Indian jujube in the southern part of Taiwan and occurrs all year round especialily during the dry seasons (from October to January) except prune and graft periods (from March to the middle of April). Six predators of the citrus red mite were found on Indian jujube. Among them, Stethorus loi Sasaji and Amblyseius womersleyi Schicha were considered as the dominant species for frequent occurrence. Nine miticides were tested in the field against citrus red mite. Results indicated that 10% Fenpropathrin EC, 30% Propargite WP and 20% Benzoximate EC were more effective to control this mite. 10% Fenpropathrin EC and 30% Propargite WP were proved more effective at the second trial in the following year.

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