Influence of Organic and Inorganic Fertilizer Rates on Food Barley under Balanced Fertilizers on Nitisols of Central highlands of Ethiopia

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Chala, G. (2018). Influence of Organic and Inorganic Fertilizer Rates on Food Barley under Balanced Fertilizers on Nitisols of Central highlands of Ethiopia. Academy of Agriculture Journal, 3(11). Retrieved from https://innovativejournal.in/index.php/aaj/article/view/2354
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Abstract

A field experiment was conducted for three consecutive cropping seasons (2015-2017) on farmers’ fields in Welmera, Ada’a Berga and Ejere district of Oromiya Regional State. The objective of this study was to evaluate the influence of organic and inorganic fertilizers on growth and yield of barley and soil chemical properties. The treatments included eleven selected combinations of organic and inorganic nutrient sources (Farm yard manure, vermicompost, Compost, Nitrogen, Phosphorus and Boron). The design was randomized complete block with three replications. Results showed that barley yield, yield components and soil chemical properties were significantly affected by the application of organic and inorganic fertilizer sources. The highest barley grain yield (4277.1 kg/ha)  was obtained from the applications of half doses of vermicompost (3.8t/ha) which is based on recommended N equivalent and half doses of the recommended nitrogen and phosphorus fertilizers (30kg/ha N and 34.5kg/ha P2O5 that half dose contains) and followed by 3911.5 kg/ha for grain yield  due to the application of the full recommended N and P rates (60kg N/ha and 69kg P/ha)from inorganic fertilizers. The highest biomass yield (9937.2 kg/ha) was obtained from the applications of the full recommended N and P rates (60kg N/ha and 69kg P2O5/ha). Application of organic fertilizer improves organic matter from 1.26% to 1.56%, N from 0.14% to 0.23% and phosphorous from 7.84ppm to 12.59pmm. The result also showed that the highest marginal rate of return was obtained from application of 50%VC(based on equivalent N rate)+ 50% N and P, which is economically the most feasible alternative on Nitisols of central Ethiopian highlands.

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