Control of the seed beetle Callosobruchus muculatus reared on chickpeas by different applicable conditions of the insect growth regulator, Cyromazine

Scientific Research and Essays

Fahd A Al-Mekhlafi¹ 

关键词:  ;    Food consumption;    IGR;    increasing rate;    sex ratio.;   

DOI  :  10.5897/SRE11.1034

学科分类：社会科学、人文和艺术（综合）

来源: Academic Journals

【 摘 要 】

Efficiency of most pesticides is monitored by many factors such as the method of application, the concentrations and the temperature. The study was aimed to investigate the optimal conditions for using Insect Growth Regulator (IGR), cyromazine to control the Southern cowpea weevilCallosobruchus muculatusFab. (Bruchidae: Coleoptera). Interactions of the method of application and concentrations of cyromazine together with temperatures significantly affected the reproductive rate ofC. muculatus. Accordingly, when seeds were completely embedded (dipping method) in 5% cyromazine at 30°C, the insect reproductive rate was significantly decreased to 1.37%. In addition, results revealed that the increase in cyromazine concentration simultaneously with the seed-dipping method clearly decreased the consumption of food storage by the insect population. However, the generation lifespan of the insect was increased. No significant change was observed in the percentage of the sexual ratio, while a clear significant difference was recorded in the weights of the males and females. In conclusion, the seed-embedding method with a high concentration (5%) of cyromazine at 30°C resulted in the most significant food consumption with a clear reduction in the generation reproductive rate.

【 授权许可】

CC BY