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The study was conducted at Negasa area in Guto Gida district to mitigate soil acidity using lime and vermicompost application on bread wheat land use of farmer’s field during 2018 main cropping season. The factors studied were four levels of agricultural lime (0, 50, 100 and 150% RR rated based on exchangeable acidity method) applied one month before planting and three levels of vermicompost (0, 2.5 and 5 t ha-1) applied two weeks before planting. The treatments were laid out as a RCBD in a factorial arrangement, and replicated three times. Representative soil samples were taken before and after planting. The soil physicochemical properties were analyzed following standard procedures. The soil pH and exchangeable basic cations (Ca and K) were significantly increased by 7.62, 31.16 and 26.08% respectively while exchangeable acidity and exchangeable Mg were significantly decreased by 47.73 and 26.53% respectively due to lime application at a level of 150% RR compared to control. While only exchangeable Mg, K and Na and soil bulk density were improved due to vermicompost application. The interaction effect of lime and vermicompost significantly influenced bulk density and total nitrogen of the soil. Simple correlation analysis among soil properties indicates that soil exchangeable acidity is significantly and negatively correlated with soil pH, exchangeable Ca and Na. It can be concluded that application of lime at the rate of 150% RR improve most chemical properties of acidic soil. Similar effort should be done over years to determine the long-term effect of lime and vermicompost on such acidic soil properties.

Amelioration of Acidic Nitisols Using Lime and Vermicompost in Negasa Area, East Wollega Zone, Ethiopia