Effect of Neem, Basil and Chilli Powders on the 3rd Larval Instar of the Red Flour Beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)

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Date
2015-06-15
Authors
Mohammed Esmail Abdalla Elzaki, Elzaki
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Publisher
uofk
Abstract
This study was carried out in the Laboratory of the Department of Crop Protection, Faculty of Agriculture, University of Khartoum, Shambat, Sudan. During December 2010. The objectives of this study to evaluate the effect of neem leaves, basil leaves and chilli fruits powder against: the 3rd larval instar of Red flour beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). Larvae mortality, antifeedant and number of (3rd) larvae which reach adult stage were use as parameters of efficacy. The local sorghum seeds variety (Fatarita) was used as food in this study. Each 20 gms of clipped sorghum grains were placed in a petridish. Each pertidish was treated with the powder of each product separately at two concentrations: 5% and 10% (w/w). Twenty larvae of T. castaneum were placed in each treated petridish. The count was done every 48 hrs for two weeks for larval mortality and at the end of the two weeks for antifeedant effect and the number of larvae which reached adult stage. The results showed that all the treatments caused mortality of the 3rd larval instar of T. castaneum. Both neem and chilli at the concentration of 5% and 10% were better than basil concentrations. All neem (5% and 10%), chilli (5% and 10%) and basil (10%) showed antifeedant effect on the 3rd larval instar of T. castaneum. Neem5% recorded the best results. All treatments reduced the number of larvae that reached adult stage. Both neem and chilli concentrations better effects than basil concentrations
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Effect of Neem, Basil and Chilli Powders on the 3rd Larval Instar of the Red Flour Beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)
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