2002•Yunnan Forestry Science and TechnologyRequires access
Control Test of Dendrolimus punctatus wenshanensis Using Compound Pesticide of Bt and DCPV
Hu Guang
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Abstract
Bioassay of five concentration Bt, 2 ×10 7 spores/mL, 4 ×10 7 spores/mL, 6 ×10 7 spores/mL, 8 ×10 7 spores/mL, 1 ×10 8 spores/mL, on period 4 Dendrolimus punctatus wenshanensis, was conducted The results showed that the optimum concentration which cause the death rate of 70% was 2×10 7 spores/mL Test were also conducted to reveal the appropriate concentration of DCPV in compound microbiological pesticide, the results indicated the lowest concentration of DCPV causing 50% infection rate of the remain pest was 6 0 ×10 5 PIB/mL The optimum compound concentration Bt+DCPV was 6 0×10 7 spores/mL+4 0×10 5 PIB/mL, the control effect was 82 08%