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Scientia Silvae Sinicae ›› 2003, Vol. 39 ›› Issue (zk): 194-197.doi: 10.11707/j.1001-7488.2003S135

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EFFICACY OF OIL FORMULATION OF BEAUVERIA BASSIANA TO DENDROLIMUS PUNCTATUS BY ULV SPRAYING

Huang Jinshui2,Tang Chensheng2,He Xueyou5,Xu Yaochang3,Wu Shoude4   

  1. Fujian Forestry Academy Fuzhou350012;The Forestry Plant Quarantine Station of Zhangzhou, Fujian Province Zhangzhou363000;The Forestry Plant Quarantine Station of Yunxiao County, Fujian Province Yunxiao363300
  • Received:2003-03-21 Revised:1900-01-01 Online:2003-12-25 Published:2003-12-25

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Abstract:

In the paper, the ultra-low-volume spraying of oil formulation of Beauveria bassiana was used to control Dendrolimus punctatus. The results indoor and outdoor showed that conidial powder of B. bassiana had a good control effect on D.punctatus with mortality of more than 80%, and started appearing white cadaver on the sixth day after spraying with concentrations of 200 mL·(667 m2)-1 and the mortality reached 70.9% on the seventh day. Adding Femalerate in oil formulation had a significant addition toxicity effect, and the more the density of Fenvalerate,the more is the mortality of D.punctatus, and they attained death peak on the fifth day after spraying with Femalerate of 0.4 mL·(667 m2-1, and mortality attained 96.1% after fifteen days. There were the most droplet at a spraying distance of 4 m, and effective spray width was from 2 m to 6 m with mortality of more than 85%, and mortality of pests were positively relative with quantities of droplet.

Key words: Beauveria bassiana, Oil formulation, Ultra-low-volume spray, Dendrolimus punctatus