球孢白僵菌对油桐尺蛾的生物效力（英文）

分别在2005年和2006年的5、6月份，在Kamalpur和Hunterpara茶园、孟加拉西部以及印度地区对一种昆虫致病真菌球孢白僵菌对油桐尺蛾Buzura (=Biston) suppressaria Guen.的生物效力进行了评估。以农场主常用的化学杀虫剂40% SP灭多虫和25% EC氯氰菊酯作为标准检测物。试验中球孢白僵菌浓度为1.50 g，2.00 g和2.5 g/lit. of water；灭多虫和氯氰菊酯浓度分别为0.75 mL，1.00 mL和1.50 mL，和0.50 mL，1.00 mL和1.50 mL/lit. of water。在喷洒2.5 g/lit. of water 球孢白僵菌3天后，Kamalpur和Hunterpara茶园中油桐尺蛾种群个体数分别降低了88.00%和84.00%。死的毛虫变成黑色，垂悬在叶片上。并且发现球孢白僵菌的杀虫活性与高剂量的灭多虫和氯氰菊酯的相当。

Bio-efficacy of Beauveria bassiana against tea looper caterpillar,Buzura suppressaria Guen. (Lepidopera: Geometridae)

Bio-efficacy of Beauvaria bassiana,an entomopathogenic fungus, was evaluated against tea looper caterpillar,Buzura (=Biston) suppressaria Guen. (Geometridae: Lepidoptera) at Kamalpur and Hunterpara Tea gardens, West Bengal, India, during May-June, 2005 & 2006. Methomyl 40% SP and cypermethrin 25% EC, theplanters' commonly used chemical pesticides were taken as standard checks. B.bassiana was used at 1.50 g, 2.00 g and 2.5 g/lit. Of water while methomyland cypermethrin were used at 0.75 Ml, 1.00 Ml and 1.50 Ml and 0.50 Ml, 1.00 Ml and 1.50 Ml/lit. Of water, respectively. There was 88.00% reduction in the population build up of looper caterpillar at Kamalpur Tea Garden and 84.00% at Hunterpara Tea Garden at 3 days after spraying with 2.5 g B. Bassiana /lit. Of water. The dead caterpillars turned black and hanged under the leaves. However, the biocidal activity of B. Bassiana was found to be on par with thehighest dose of methomyl and cypermethrin.