Productivity of Two Sweet Potato Varieties as Affected by Minero-Organic Fertilizer and Stem Cutting Length in the Nigerian Savanna. The Research was Carried out in 2015 and 2016 Wet Seasons in the Sudan and Guinea Agro-Ecological Zones of Nigeria. The Two Varieties of Sweet Potato Used in the Research were Dan-Zaria Variety (Local Variety) and Mothers Delight (Improved Variety). The Parameters Used in the Study were Variety, Minero-Organic Fertilizer and Stem cutting length. The Rates of Minero-Organic Fertilizer used were control, 300kg/ha and 600kg/ha. The lengths of stem cutting used were 15, 30 and 45 centimeters.
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