Received Date: 07 November 2018 | Accepted Date: 12 December 2018 | Published Date: 31 December 2018
Keywords: Vigna radiata, crop damage, insect checklist, pest control.
Green gram is a ‘wonder’ or ‘super’ food with health benefits. It is one of the shortest growth duration grain legumes that are also suitable as catch crops. Leguminous crops generally attract insect pests because of their high nutritive value. Hence, a survey of insects associated with green gram (Vigna radiata L.) treated with insecticide and fungicide was conducted in Kwanpe, a suburb of Langtang in Plateau State, Nigeria from July to September during the 2014 cropping season. Four treatments of dimethoate (an insecticide) were applied (at 0, 300, 500, and 700 g a.i./ha) in four replicates arranged in a Randomized Complete Block Design. A total of 40 insect species belonging to 4 orders and 8 families were captured. Species known to be pests in other legume crops encountered were 22. There were few predatory species. There were no statistical differences in pest species populations in treated and untreated green gram plots. It is recommended that there is no need to engage synthetic chemicals in the production of green gram in this locality. Regular insect surveillance is however required as a monitor for pest species populations in order to set economic threshold levels in this Southern Guinea Savanna ecological zone for the highly valued crop.
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