Prediction of Aphid Infestation by Numbers of Overwintering Soybean Aphid Eggs
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Aphis glycines Matsumura is a rampant insect pest on cultivated soybeans in Jilin Province. Prediction of its occurrence and infesting tendency is an important basis for effective control. Issues related with the application of overwintering egg numbers to predict the occurrence of soybean aphid were studied in this paper. The ratio of winter host numbers to summer host numbers and overwintering egg quantity in different areas of Jilin Province were compared. Based on data about overwintering egg quantities in winter hosts, Rhamnus davaricus, aphid numbers in early and pre-peak infestation stage from 1961 to 1981 in Gongzhuling district and aphid infestation level in Siping district, the relationship between overwintering egg quantity, and aphid number were analyzed. A prediction equation for forecasting aphid quantity and aphid infestation level by the overwintering egg quantity in Gongzhuling district was proposed.
Originating text in Chinese.
Citation: Cheng, Ruilu, Wang, Suyun, Bao, Xiangzhi, Xu, Enpei, Xie, Weimin. (1984). Prediction of Aphid Infestation by Numbers of Overwintering Soybean Aphid Eggs. Journal of Jilin Agricultural Sciences, 34(1), 56-61.
Originating text in Chinese.
Citation: Cheng, Ruilu, Wang, Suyun, Bao, Xiangzhi, Xu, Enpei, Xie, Weimin. (1984). Prediction of Aphid Infestation by Numbers of Overwintering Soybean Aphid Eggs. Journal of Jilin Agricultural Sciences, 34(1), 56-61.
