Bt与灭幼脲混剂对美国白蛾第2,3代幼虫的联合毒力及防治效果

doi:10.11707/j.1001-7488.20131224

Scientia Silvae Sinicae ›› 2013, Vol. 49 ›› Issue (12): 171-174.doi: 10.11707/j.1001-7488.20131224

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Joint-Toxicity and Control Effect of the Mixture of Bt and Chlorbenzuron to the Second and Third Generation Larva of Hyphantria cunea

Xu Ming¹, Liu Dongmei², Xu Fuyuan¹, Shi Jianhua³

1. Forestry Academy of Jiangsu Province Nanjing 211153;
2. Forest & Stockbreeding Bureau of Donghai County Donghai 222300;
3. Forest Pest Quarantine & Control Station of Donghai County Donghai 222300

Received:2012-12-12 Revised:2013-01-31 Online:2013-12-25 Published:2014-01-01

Abstract

Abstract:

The Hyphantria cunea's harm has a further exacerbating trend in Jiangsu and the surrounding region. In this study, we found that a mixture of Bt and chlorbenzuron has high toxicity to the second and third generation larva of H.cunea by screening, toxicity test and effect comparison. The toxicity test proved that the synergism was 0.76 and 0.83 times, and the synergized effect was notable. The field test and the aerial control experiment showed that the toxic effect and the lethal rate of the mixture were higher than eigther agent. It is concluded that the mixture of Bt and chlorbenzuron is an effective and safe treatment for controlling H.cunea.

Key words: Hyphantria cunea, mixture of Bt and chlorbenzuron, toxicity test, synergized action

CLC Number:

S763.306

Xu Ming, Liu Dongmei, Xu Fuyuan, Shi Jianhua. Joint-Toxicity and Control Effect of the Mixture of Bt and Chlorbenzuron to the Second and Third Generation Larva of Hyphantria cunea[J]. Scientia Silvae Sinicae, 2013, 49(12): 171-174.

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Joint-Toxicity and Control Effect of the Mixture of Bt and Chlorbenzuron to the Second and Third Generation Larva of Hyphantria cunea

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