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Prof. Ahmed Abdel-Ghafar Abdo Darwish :: Publications:

Title:
EFFICACY OF TWO PLANT EXTRACTS, NEEMAZAL-T AND THEIR MIXTURES WITH CHLORPYRIFOS-METHYL AGAINST SOME INSECT PESTS OF CABBAGE PLANTS
Authors: EL-Lakwah, F.A. , Darwish, A.A, ,Horeya. A. Abdel-WahaB, ** and Shaalan. ILS. **
Year: 1997
Keywords: Not Available
Journal: Not Available
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: Local
Paper Link: Not Available
Full paper Ahmed Abdel-Ghafar Abdo Darwish_001.jpg
Supplementary materials Not Available
Abstract:

The purpose o! this work was lo Investigate the effects of Iwo pLmt extracts in acetone (datura leaves and black pepper seeds). the botanical insecticide. neenىazal—T. and the organophosphonis insecticide chiorpyrifos— methyl alone and the mixtures of chlorpvrifos—methyl with the other three compounds at ils half recommended rate on sonic insects infesting cabbage plants, nanىelv cabbage aphid (Brei’icorvne b,’assicacL.), cabbage hniterfl (Pieris hrassicae’L.) and diamondback moth (PlitIc//a ?naLu/ij’ennls Curtis) Results of the field experiments, conducted during t 9)5/96 and 1996/97 seasons at the agricultural experimental station o!’ (Ile Facnltv of Agriculture. Moshtohor. Tukh. Qualyubia revealed the folحo ing : I— Effect of the Plant Extracts and Insecticides on the Tested Insects : LI- Cabbage aphid, B. brassicac : Average number of the adults and immature stages of B. bra.s’.s’icue per 3 square inch/plant was obviously decreased after 3 days from spraying and afterwards increased gradually until the next spraying aller two weeks post- treatments, Reduction vaines of the individuals were after 3 days post—treatment from 24-90 % for the various treatments. These values were decreased significantly at the 14th day of treatment and ranged from 0.9—32 %. At the highest concentrations nsed. chlorpyrifos— methyl was the most effective compound against B. bra,vsicac stages followed by iieemai,ai—T, black pepper seeds extract, hilc datura leaves extract was the least effective one. 1.2- Cabbage butterfly, P. brassicaL’: Average number of P. hrassicac’—lanae per it) plants was decreased clearly after 3 days post- treatment arid were froiii 1.3 - 12.7 for the various treatments, these values increased afterwards and were between 13-19 larvae/I() plants at the 14th day of treatments. Reduction values of larvae were between 12—

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