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Asian Journal of Plant Sciences

Year: 2006 | Volume: 5 | Issue: 2 | Page No.: 320-323
DOI: 10.3923/ajps.2006.320.323
Establishment, Yield and Control of Heteroligus meles (Bilb.) (Coleoptera: Dynastidae) in Dioscorea rotundata Poir on Amitemes evancifer (Silv.) Infested Site Using Wood Ash, Carbofuran and Aldrin
K.E. Law-Ogbomo and R.K.A. Egharevba

Abstract: Trials were conducted in 2003 and 2004 to evaluate the effect of wood ash, carbofuran and aldrin dust on the control of yam tuber beetle (Heteroligus meles) and the performance of Dioscorea rotundata. Yam vines emerged earlier from the treated setts than the untreated setts and it was much higher in carbofuran (25.3%) than wood ash (22.3%) and aldrin dust (20.4%) in that order. However, there were no significant differences among the treatments. Dry matter was much higher in carbofuran followed by wood ash and then aldrin dust. Fresh yam tubers produced by carbofuran treated setts weighed significantly more (1.97 kg stand-1) than those produced by wood ash treated setts (1.62 kg stand-1), aldrin dust treated setts (1.45 kg stand-1) and untreated setts (1.43 kg stand-1). During both years, a highly significant difference (p<0.05) existed among treatments. In 2003, the mean of beetle feeding holes was 9, 4, 2 and 11 for aldrin dust, wood ash, carbofuran and control respectively. The pattern of distribution in 2004 was not quite different from that of 2003. There was no significant difference between damage in the aldrin treated setts than the control. From the trial, it appeared that Heteroligus meles have developed insensitivity to aldrin dust and that carbofuran should be used instead since insect pests was sensitive to it while wood ash can be used as substitute to carbofuran by resource-poor farmers and when carbofuran was not available.

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How to cite this article
K.E. Law-Ogbomo and R.K.A. Egharevba , 2006. Establishment, Yield and Control of Heteroligus meles (Bilb.) (Coleoptera: Dynastidae) in Dioscorea rotundata Poir on Amitemes evancifer (Silv.) Infested Site Using Wood Ash, Carbofuran and Aldrin. Asian Journal of Plant Sciences, 5: 320-323.

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