Document Type : Articles
Author
Department of Plant Protection, College of Agriculture Engineering Sciences, Salahaddin University- Erbil
Abstract
ABSTRACT
The life cycle and effectiveness of insecticides against Chrysolina herbacea adults under laboratory conditions were determined in this study. C. herbacea was chosen for this study because it is a major pest of Lamiaceae plants, particularly those in the genus Mentha. Significant damage is caused to plants by them consuming their leaves. The results of the life cycle revealed that the total egg, larval, pupal, and pre-oviposition periods were determined to be 8.5 ± 1.9, 21.7 ± 1.3, 32.6 ± 2.6, and 11.8 ± 1.2 days, respectively. The life cycle (from egg to pre-oviposition) was 73.3 ± 7.9 days. The toxic effects of alpha-cypermethrin, thiamethoxam, and acetamiprid on the mortality rate of C. herbacea adults were tested in laboratory conditions. Alpha-cypermethrin showed a maximum mortality rate in C. herbacea adults after 24, 48 and 72 h (26.7, 33.3 and 40 %) respectively. Meanwhile, Acetamiprid's minimum mortality rate (16.7 and 20 %) was observed after 24 and 48 hours of treatment. Results showed that alpha-cypermethrin was the most toxic to C. herbacea adults among the treated synthetic pesticides
Keywords
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