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Author

Yvonne Sylvia Gloria Ethel Norman

Department of Economics, Njala University/University Secondary School, Sierra Leone
1 article in our journals

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Research ArticleOpen accessAgronomic and Economic Parameter Estimates of Cocoyam as Influenced by Fertilizer and EnvironmentPrince Emmanuel Norman, Yvonne Sylvia Gloria Ethel Norman, Jenneh Fatima BebeleyThe effects of fertilizer and environment on agronomic traits and economic parameters in cocoyam were assessed at the Njala Agricultural Research Centre experimental site during the 2014/2015 and 2015/2016 cropping seasons. The fertilizer types used were 200 kg ha–1 NPK 15-15-15, 2000 kg ha–1 Rabbit Manure (RM), and no fertilizer (control). The trial was established in the open field and … …American Journal of Agricultural and Biological Sciences, Vol. 17, Issue 1 · 24 Nov 2022 · 6,049 accessesView PDFCite