Author:
Al Hamadani Alaa Hssein Abed,Al-fatlawi Meeri Kadhim Mubasher,Hadi Merzah Hamzah
Abstract
Khapra beetle is one of the dangerous pests that infests fields and warehouses, and using safe alternatives such as plant extracts is one of the options. The efficacy of aqueous extracts of Achillea fragrantissima and Chenopodium album (5, 10, 15%) at different exposure durations (48, 96, and, 144 hr) has been evaluated in this study. Mortality of fifth-instar larvae and adults was observed, and it was shown that an exposure period of 144 hr was superior with hot and coldwater extracts of C. album. The results also showed that maximum mortality of fifth instar larva (65,000 and 92,405%), respectively, was at a concentration of 15% for the cold and boiling water extracts. Mortality of adults was maximum with cold and hot water extracts of the C. album, at an exposure period of 144 hr, as well as at 15% (36,809 and 55,671%, and (51,299 and 74,671%, respectively). Thus the results showed that C. album extract was superior, there existed a significant effect of the interaction between (extract type, concentration, and treatment duration) on the mortality of larvae and adults.
Publisher
The Entomological Society of India
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