Evaluation of Released Finger Millet Varieties in the East Wollega Zone of Western Oromia for Yields and Acid Soil Tolerance

On the sub humid regions of western Oromia, many finger millet cultivars were released and produced, but their performance on acid soils was not well researched. A field experiment consisted of two factors (nine finger millet verities and two lime rates, limed and un-limed treatments) were laid out in factorial arrangement, Randomized Complete Block Design with three replications. The experiment was carried out at three locations (Bako, Diga and Gute) during 2019 and 2020 main cropping seasons to identify and recommend finger millet varieties better performing to acid soils of sub humid areas of western Oromia. The interaction effect of variety by lime for two years over three locations was significant for biomass weight and grain yield. Bako 09 produced significantly the highest mean biomass weight and produced increments of 10% biomass weight and 7% grain yield by application of lime compared to un-limed treatment. At Bako, Kumsa, Bako 09, Boneya and Addis 01 produced significantly the highest biomass weight and grain yield compared to others but not significantly different from each other and produced 4% to 12% yield advantage over all mean grain yield. At Diga and Gute, Bako 09 produced significantly high grain yield. Consequently, application of lime increased finger millet grain yield, soil pH, available P, organic carbon and total nitrogen. Considering higher grain yield, production of Bako 09 under limed condition is recommended for the sub-humid western Oromia. Besides lime application and varietal selection, cropping system managements like rotation, integrated use of organic and inorganic fertilizers, and split application of fine particle lime to acid soils require further research attention for sustainable crop production in acidic soils.