Wollega University, Ethiopia
Achalu Chimdi is a Assistant professor at Wollega University - Wollega University.
Soil acidity is one of the major limiting factors to acid sensitive crop production like barley (Hordeum vulgare L.). The study was conducted on soils of three land uses (forest, grazing and cultivated) in Guto Gida District of the East Wollega areas of Oromia Region, Ethiopia. A greenhouse incubation experiment was employed to assess the effects of lime rates (0, 2, 4, 6, 8 and 10 tons ha-1) on selected soil chemical properties, barley P-uptake and its grain yield. Data generated was subjected to analysis of variance (ANOVA) using SAS software version, 9.1. The main effects of applied lime rates and interactions effects between lime rates and soils from different land uses significantly (P<0.001) affected soil PH, the concentration of Al saturation, barley P uptake and its grain yield. Greenhouse incubation of soil with100 mesh size lime for 90 days reduced the percent acid saturation from 10 in the 0 t ha-1 to 0.8 % at 10 t ha-1 lime rate in soils of the forest land and for the grazing and cultivated lands. It decreased from 26.7 and 45.8% in the control to 3 and 23.6% for the 10 t ha-1 respectively, in soils of graining and the cultivated land. Maximum grain barley yield in a greenhouse experiment were obtained at 6 t ha-1 of lime rate on the forest and grazing lands followed by 10 t ha-1 on soils of the cultivated land. Thus, incubation of soil with applied lime rate at 10 t ha-1 showed considerable drop of the PAS with an accompanying increase of soils PH, plant p uptake and barley yield on soils of the different land uses of the study area. However, the response pattern of the change in these traits to varying lime rates varied from one land use systems to the other.
Keywords: Acidic soil Exchangeable acidity Barley yield Land use Lime rates.