Influenced of Organic and Chemical Source Fertilizer on Soil Physicochemical Properties and Nutrient Concentration of Nitisol in Welmera District, Central Ethiopia

Sustaining soil fertility and enhancing food production on smallholder farms is a great challenge in High Lands of Ethiopia due to mining of nutrients as result of continuous cropping without adequate external addition of inputs. A study was therefore, conducted to investigate effects of vermicompost and nitrogen fertilizer combination on soil physicochemical properties at Holeta Agricultural Research Center on Nitisols in the central highlands of Ethiopia in the 2019 cropping season. The treatments were arranged in a factorial split split-plot combination with two wheat varieties (Danda'a and Wane) as main plot, four vermicompost levels (0,2.5,5 and 7.5 t. ha-1) as sub plot plot and four N fertilizer levels (0,23,46, 69 kg N ha-1) as sub- sub- plot with three replications. The results revealed that the main effect of vermicompost significantly (P