Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50787#.VE8VhVfHRK0 Author(s) I. Chagonda , R. F. Mapfeka , T. Chitata Affiliation(s) Department of Agronomy, Faculty of Natural Resources Management and Agriculture, Midlands State University, Gweru, Zimbabwe . ABSTRACT In Zimbabwe sweet potato ( Ipomoea batatas L.) production is practiced under different tillage systems with varying vine orientations, which contribute to variable yields. Limited research on yield loss due to these different practices is available despite that the majority of farmers are growing sweet potatoes to sustain their livelihoods. A field study was carried out at Midlands State University i...
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