Title
Effect of the YellowBerried Nightshade against the Red Flour Beetle: Toxicity & Effects of the yellowberried nightshade Solanu,Used
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Recent trend for the control of insect pests has been towards the use of substances of plant origin. Toxicity and residual effects of the yellowberried nightshade, Solanum surrattense Burm. leaves extract were determined against adults of red flour beetle, Tribolium castaneum (Herbst) by contact/filter paper method under laboratory condition. The lowest mortality 15% was observed at the minimum dose 2.4 l/cm2 and the highest 100% was observed at the maximum 16.8 l/cm2 after 24 h. The LD50 of S. surrattense was found 8.02 l/cm2. Finally, residual effect of the same plant extract was observed for 8days. During 1st day, mortality, the lowest was 49.4% at minimum 2.4 l/cm2 doses and the highest mortality was 91.6% at maximum 11.8 l/cm2 dose. During 7th day, mortality, the lowest was 5.0% at 2.4 l/cm2 and the highest was 60.5% at 11.8 l/cm2. During 8th day, mortality, the lowest was 2.4 % at 2.4 l/cm2 and the highest was 11.1% at 11.8 l/cm2.
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