Improved nutrient management regime for production of early generation seed of sweetpotato in the screenhouse

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dc.creatorAtugonza, K.
dc.creatorOmongo, C.
dc.creatorMusana, P.
dc.creatorNamanda, S.
dc.date2025-10
dc.date2025-10-15T22:20:47Z
dc.date2025-10-15T22:20:47Z
dc.date.accessioned2026-06-27T18:00:00Z
dc.descriptionThis research brief summarizes a nutrient optimization experiment conducted at Uganda’s National Crops Resources Research Institute (NaCRRI) in 2023–2024 to enhance sweetpotato pre-basic seed production in screenhouse conditions. Four fertilizer treatments—forest compost, forest compost + decomposed poultry manure, forest compost + urea (46%), and forest compost + NPK (25:5:5)—were tested on varieties NAROSPOT 1, Tanzania, and NASPOT 10 O (Kabode). The combination of forest compost and decomposed poultry manure yielded the highest vine multiplication rate (VMR) (49% increase) and lowest unit production cost (UGX 13 per cutting), especially for the variety Tanzania. In contrast, compost + urea resulted in the highest costs (UGX 25 per cutting). The findings identify the compost + manure combination as the most agronomically efficient and cost-effective nutrient regime for sustainable pre-basic seed production.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/177145
dc.identifier.urihttp://hdl.handle.net/123456789/151997
dc.languageen
dc.rightsOpen Access
dc.sourceAtugonza, K.; Omongo, C.; Musana, P.; Namanda, S. 2025. Improved nutrient management regime for production of early generation seed of sweetpotato in the screenhouse. International Potato Center. 2 p.
dc.subjectsweet potatoes
dc.subjectfertilizers
dc.subjectseed production
dc.subjectnutrient management
dc.subjectsoil fertility
dc.titleImproved nutrient management regime for production of early generation seed of sweetpotato in the screenhouse
dc.typeBrief

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