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Creative Commons License 2014 Volume 1 Issue 4

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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Entomology and Applied Science Letters is an international double-blind peer reviewed publication which publishes scientific research & review articles related to insects that contain information of interest to a wider audience, e.g. papers bearing on the theoretical, genetic, agricultural, medical and biodiversity issues. Emphasis is also placed on the selection of comprehensive, revisionary or integrated systematics studies of broader biological or zoogeographical relevance. In addition to full-length research articles and reviews, the journal publishes interpretive articles in a Forum section, Short Communications, and Letters to the Editor. The journal publishes reports on all phases of medical entomology and medical acarology, including the systematics and biology of insects, acarines, and other arthropods of public health and veterinary significance.

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Entomology and Applied Science Letters supports the submission of entomological papers that contain information of interest to a wider reader groups e. g. papers bearing on taxonomy, phylogeny, biodiversity, ecology, systematic, agriculture, morphology. The selection of comprehensive, revisionary or integrated systematics studies of broader biological or zoogeographical relevance is also important. Distinguished entomologists drawn from different parts of the world serve as honorary members of the Editorial Board. The journal encompasses all the varied aspects of entomological research.