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Studies on Economic Threshold of Liriomyza sativae |
Ye Zhengxiang; Qin Houguo; Huang Shuijin; et al. |
Institute of Plant Protection; Jiangxi Academy of Agricultural Sciences; Nanchang 330200 |
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Abstract The yield loss (Y) attributed to Liriomyza sativae in cowpea was tested. The results showed that the yield loss increased with the number (X) of worm eaten path. The regression equation was:Y= -76.101 +3.469X. According to the present price of cowpea,the cost and effect of control,the economic threshold,for controlling of Liriomyza sativae was 30.35 worm eaten path per leaf.
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Received: 01 January 1900
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