Biomass production and nutritional quality of potato tuber as affected by blended fertilizer (NPSB), cattle manure, vermicompost and mineral NP in southwestern Ethiopia

Keeping in view the declining soil fertility and people’s nutritional issues, a research experiment on potato (Solanum tuberosum L.) was carried out Belg (February to May) Meher (June October) seasons of 2020 at Abelo Masha district, southwestern Ethiopia, gauge effects blended mineral NPSB fertilizer, cattle manure (CM), vermicompost (VC) NP growth, biomass tuber quality. The fertilizer treatments consisted 7.5 t CM ha-1 + 75 50% recommended dose fertilizers (RDF), VC 75, 50 25% NP, 5 75% 100 kg 61.5 P 146 N ha-1, 150 53.7 138 200 46 128 100% (165 60 ha-1) one no-fertilizer treatment (control) making total 11 treatments. indicated that application significantly increased plant height, dry shoot root yields, specific gravity, soluble solids starch. On other hand, highest crude protein content recorded ha-1. It summarized use (124 45 improved quality fetching high economic return over sole either 200% or 150% no-application study area. In light present findings, there is need extend these studies using multiple combination ratios with different soils varied agro-climatic zones come up conclusive recommendations.