›› 2002, Vol. 45 ›› Issue (6): 753-758.

• RESEARCH PAPERS • Previous Articles     Next Articles

The efficacy of a synergistic mixture of cyhalothrin and abamectin in the control of Liriomyza sativae Blanchard

ZENG Yi-Liang1, WANG Da-Sheng2, QIN Xiao-Wei1, KANG Le1, ZHANG Wen-JI3, WANG Tong-Shun4, WANG Bao-Ying5, LIAO Cong-Zu6   

  • Online:2002-12-20 Published:2002-12-20

Abstract: The cotoxicity and coefficiency (CTC) of a mixture of abamectin as a biological pesticide and cyhalothrin as a chemical insecticide with low toxicity to mammals was determined with respect to Liriomyza sativae Blanchard. CTC of this mixture was equal to 161-232 in a range of marked synergism. According to the maximum of the proper proportion of cyhalothrin to abamectin, a 2% permeated WP synergistic formulation was manufactured. In the field trials the efficacy of this 2% WP against L. sativae larvae was excellent in both Shandong and Beijing districts. For example, at an application rate of 507g/667m2, corrected mortality in each zone after 3, 7 and 11 days was 85.26%-90.76% and 86.74%-94.02% respectively. At 25g/667m2 the corresponding control effects were 75.28%-85.17% and 79.96%-88.68% respectively. This synergistic mixture was fast acting, had good residual performance and was relatively cost effective. Another advantage of using WP over EC pesticides is that a markedly less amount of chemicals are released into the environment, thereby decreasing pesticide pollution.

Key words: Liriomyza sativae Blanchard, control, cyhalothrin, abamectin, synergistic, mixture