Control Threshold of Soybean Aphids

Relationship between aphid density during flowering season and soybean yield was surveyed in 1998-1990. Based on the 3-year study, we proposed the control thresholds of soybean aphids for different levels of soybean yield.Originating text in Chinese.Citation: Lin, Cunluan, Xun, Zhenshan, Li, Lingtang, Wang, Yanpeng, Zhang, Guangxin. (1992). Control Threshold of Soybean Aphids. Soybean Science, 11(4), 318-321

Effects of Aphid Population on the Major Economic Parameters of Soybean

During the growing period of soybeans, aphids are harmful to several economic parameters of soybean. The aphid population density has a significant positive correlation with the rate of soybean shriveling and significant negative correlation with the 100-kernel weight and individual kernel weight of soybean.Originating text in Chinese.Citation: Lin, Cunluan, Li, Lingtang, Wang, Yanpeng, Xun, Zhenshan, Zhang, Guangxin, Li, Suzhen. (1993). Effects of Aphid Population on the Major Economic Parameters of Soybean. Soybean Science, 12(3), 252-254

Studies on the Population Dynamics and Control Stage of Soybean Aphid in Jining, China

Soybean aphids were widespread and caused serious harm in the Jining area in recent years. About 800 aphids were found on a single soybean plant at peak time in general and even over 3,000 were found on typical individual plants. From 1988 to 1990 the aphid population was systematically investigated in soybean fields for scientific and efficient control. The relationship between population dynamics of soybean aphid and meteorological information was analyzed.Originating text in Chinese.Citation: Lin, Cunluan, Xin, Zhenshan, Li, Lintang, Zhang, Huikong, Zhang, Guangxin, Wang, Yanpeng. (1994). Studies on the Population Dynamics and Control Stage of Soybean Aphid in Jining, China. Shandong Agricultural Sciencese, 4, 44-44