An Experimental Demonstration of Comprehensive Control for Basilepta melanopus Lefevre

An experimental demonstration of comprehensive control for Basilepta melanopus Lefevre was carried out in Wuyi Mountain city and Fu'an city, respectively. Better laboratory effects could be obtained by 5% pyrethrins EC (pEC) and 0.5% vertrine WP (vWP) with 1000-fold dilution. However, the field control effects of pEC after 1, 3 and 5 days were 71.86%, 61.93% and 49.98%,respectively, suggesting that pEC has high efficiency and weak persistent. On the contrast, the vWP has better efficiency and persistence, for the field control effects of Vwp after 1, 3 and 5 days were 77.04%, 71.76% and 67.24%,respectively. Two strains of Beauveria bassiana purified from Basilepta melanopus Lefevre could cause successful parasitic infestation. Laboratory tests shows that one of which has better parasitic efficiency for 2?107 spores穖L-1 of Beauveria bassiana cause an average correction parasitic rates of 66.65%, and 62.85% for 1?107 spores穖L-1 after 15 days. Meanwhile, field parasitic rates were 32.64% to 45.21% with the powder dosage of 15 kg穐m-2, and the control rate was 59.89% with shallow ploughing. Shallow ploughing in spring, spraying Beauveria bassiana at the initial occurrence and twice usage of botanical pesticides at prosperous time were the feasible methods to control Basilepta melanopus Lefevre, by which the damage rate to the tea shoots could be controlled below 6.8% when the pests were rampant in tea garden.