EFFECT OF NEEM LEAF EXTRACTS AND POWDERS AGAINST THE COWPEA WEEVIL, CALLOSOBRUCHUS MACULATUS (F.) (COLEOPTERA, BRUCHIDAE) | ||
| Egyptian Journal of Agricultural Research | ||
| Article 36, Volume 73, Issue 4, December 1995, Pages 1001-1008 PDF (2.04 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.1995.442897 | ||
| Author | ||
| SANAA M. MAHGOUB | ||
| Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt. | ||
| Abstract | ||
| The effect of neem leaf extracts and powder was tested on Callasobruchus rnaculatus (F.) adults. Results revealed that chloroform extract gave 88.3% mortality at 1.0% concenration and after three days of exposure, while the aqueous extract marked the lowest percentage of mortality (51.9%). In case of neem leaf poweder, the highest concentration (3%) gave 100% mortality at the same period. The effect of the organic solvent extracts and powder on the biological aspects and fecundity of C.maculatus was also studied. Extracts and powder highly decreased the number of deposited eggs per female. Tested extracts prevented the emergence of adults. The effect of tested materials on the germination of seeds was also studied. Germination of the treated seeds remained almost equal to that of the control even after 120 days of storage. The protection dusts failed to give the same protection after 4 months. | ||
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