Publisher: Bachudo Science Co. Ltd

Evaluation of Powder and Ash From Neem Tree (AZADIRACHTA INDICA A. JUSS) As Seed Protectants Against Infestation

G. L. Buraimoh, T. I. Ofuya, R. D. Aladesanwa
KEYWORDS: Powder, ash, Azadirachta Indica, Callosobrilchus maculatus, control.


Under laboratory conditions (28 ± 3°C and 65 ± 5% r.h.) in Akure, Nigeria, powder and ash made from parts of the neem tree (Azadirachta indica A. Juss) :. seed, seed shell, leaf, and bark, were compared at two rates of application (0.25 and 0.50 g per 10 9 of seed), as seed protectants against infestation of cowpea seeds ( Vigna unguiculafa (LI Walp.) by Callosobruchus maculatus (F.), a very serious storage pest. Oviposition bf the beetle was lowest on seeds traatod with powders from the seed shell and seed applied at 0.5 g. Adult emgergence from eggs laid on treated seeds was lowest with pewders from the neem seed followed by that from the seed shell at 0.5 g. Oviiaosition and ai:hllt emergence of C. macu/stus was lowest in treatment with neem seed ash at 0.5 g. Oviposition and adult emergence from eggs laid was liignificantly loMr for powder than for ash with nEem seed and seed shell. Powder from neem seed was most lethal to adult beetles, followed by that obtained from seed shell.    

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