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EVALUATION OF THE TOXICITY OF DIFFERENT NICOTINE SULFATE CONCENTRATIONS IN CONTROLLING NYMPHAL INSTARS AND ADULTS OF CABBAGE APHID BREVICORYNE BRASSICAE (L.) ( HOMOPTERA: APHIDIDAE ) | ||
| Iraqi Journal of Science | ||
| Article 1, Volume 52, Issue 3, 2011, Pages 286-291 | ||
| Authors | ||
| Hind Suhail Abdul-Hay; Hind Suhail Abdul-Hay | ||
| Abstract | ||
| The aim of this project is to study the efficacy of nicotine (as nicotine sulfate) extracted from tobacco by- products of the Iraqi Tobacco and Cigarettes Industry against cabbage aphid Brevicoryne brassicae (L.). On the basis of LC50 values, laboratory data have indicated a positive correlation between these values and progress of insect life cycle . The LC50 values for the fourth nymphal instar were 4.9 more than first instar; while it was for apterae 6.5 times more than the first instar for nicotine sulfate. The alatae were more susceptible to insecticide than apterae, where LC50 values for apterae were 1.03 times more than that for alatae LC90 for nicotine sulfate on all stages follow the same trend as for LC50 but with higher values. Finally, we recommend the use of nicotine sulfate as an insecticide for the control of cabbage aphid instead of the widely used pesticides compounds which are environmental pollutants | ||
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