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Combined effect of grain solarisation and oiling on the development of Sitophilus zeamais Motsch
Abstract
The maize weevil (Sitophilus zeamais Motsch. Coleoptera; Curculionidae) is one the most important storage pests of maize in East Africa. We investigated the combined efficacy of grain oiling with vegetable oil and 2- hour grain solarisation on S. zeamais damage to maize. Maize, Longe 1 variety was treated at dosages of 0, 1, 2, 4 ml per kg of grain, and artificially inoculated with 12- adult S. zeamais weevils. Combination of grain oiling and solarisation of grain at 1, 2 and 4 ml per kg significantly reduced weevil emergence (F=3.06, P< 0.001) compared to the singular treatments. Solarised grain had 5.5
