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1984-86年,利用从青杨天牛病虫体上分离的一株金龟子绿僵菌,防治青杨天牛幼虫。在室温26℃ RH95％的条件下,LD50为103孢子/mg虫体,在感染剂量分别为8925、1785、357孢子/mg虫体时,LT50分别为1.91、2.93、4.79天。小区防治效果均达94％以上。1986年,在周至县利用该菌菌液(2亿孢子/mg)防治青杨天牛106·6亩,防治期15天,防效达70·75％。
In 1984-86, the use of a strain of Metarhizium anisopliae isolated from the pterostilbene body of Populus euphratica, the control of young caterpillars. The LD50 was 103 spores / mg at room temperature RH95% at 26 ℃. The LT50 was 1.91, 2.93 and 4.79 days at infection doses of 8925, 1785 and 357 spores / mg respectively. Community control effect reached more than 94%. In 1986, the bacteria in Zhouzhi County (200 million spores / mg) was used to control 106.6 mu of Populus euphorbia. The control period was 15 days and the control effect was 70.75%.