Effects of Variety and Fungicidal Rate on Cercospora Leaf Spots Disease of Groundnut in the Sudan Savanna

A field study was carried out at the University of Maiduguri Teaching and Research Farm during the 2006, 2007 and 2008 cropping seasons to evaluate the effects of variety and fungicidal rate on Cercospora leaf spot disease of groundnut. The experimental design used was Randomized Complete Block Design (RCBD) with twelve treatment combinations of three varieties of groundnut (Ex-Dakar, RRB and ICGV-86024) and four levels of fungicidal rate (0, 1, 2 and 4 kgha ￥1 of fungicide mancozeb) replicated three times. Disease incidence and disease severity were significantly higher in Ex-Dakar and 0 kgha ￥1, thus had lower yields. Higher seed and haulm yield were recorded by RRB, ICGV-86024, as well as 2 and 4 kgha ￥1 as a result of lower disease incidence and severity.