Effects of various doses of Neem-Afri biopesticide on the mortality and emergence of adult Callosobruchus Maculatus (Fabricius) [Coleoptera: Chrysomelidae] reared on cowpea seeds

Sani Zakariya, Shinkafi Buhari Yusuf, Aiki Istifanus Peni

Abstract


Studies were conducted at the Department of Biological Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria, to determine the effects of various doses of commercial biopesticide, Neem-Afri, on the mortality and emergence of adult Callosobrucus maculatus (Fabricius). Thirty air-dried Cowpea, Vigna unguiculata (L.) Walp. Grains, treated with four (10.0, 5.0, 2.0 and 1.0 ml: 100 ml) doses of emulsify able biopesticide, were infested with five pairs of freshly emerged adult C. maculatus and were observed under ambient laboratory conditions. Results showed over 70% adult mortality in all the seeds treated with Neem-Afri biopesticide, and 100% inhibition in seeds treated with 10 ml dose of the commercial pesticide at 4 days and 30 days post treatment respectively.

Keywords: Biopesticides, Cowpea, Callosobruchus maculatus, Neem-Afri, Mortality, Emergence.


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URN: http://nbn-resolving.de/urn:nbn:de:0000easl.v1i4.408

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