THE DISTRIBUTION OF MAIZE STEM BORERS IN CROSS RIVER STATE, NIGERIA
Okweche, Simon Idoko and Umoetok, Sylvia B. A
|Corresponding Author: Simon Idoko, E-mail: [email protected] Tel : +234 -70 -3496-7125|
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Field experiments were conducted to determine the distribution of stem borers in two agro-ecological zones of Cross River State, Nigeria. The experiments were conducted Akamkpa (rainforest agro-ecological zone) and Bekwarra (guinea savanna agro-ecological zone) during the 2009 and 2010 cropping seasons. The survey shows that species of Busseola fusca, Sesamia calamistis, Eldana saccharina, Chilo partellus, and Coniesta ignefusalis were found to be prevalent in the maize fields in the two agro-ecological zones of the state. Busseola fusca was however found to be significantly (p<0.05) more (17.741 per plant for early season and 26.667 for late season) than the other stemborer species (Sesamia calamistis 4.482 (early) and 4.926 (late),Eldana saccharina 2.259 (early) and 2.815 (late), Chilo partellus 3.444 (early and late) , Coniesta ignefusalis 1.889 (early) and 1.482 (late) in Bekwarra (guinea savanna agro-ecological) zone of the state while Sesamia calamistis population (15.963 (early) and 25.519 (late) was significantly (p<0.05) higher than other stemborer species (Busseola fusca 3.074 (early), 4.667 (late), Eldana saccharina 2.889 (early), 2.519 (late), Chilo partellus 4.296 (early), 4.482(late), Coniesta ignefusalis 0.963 (early) and 3.222 (late) in Akamkpa (rainforest agro-ecological) zone.