Soil Test Based Crop Response Phosphorus Calibration Study for Bread Wheat ( Triticum aestivum L.) Production in Agarfa District Bale Highland, Oromia, Ethiopia
Ethiopia faces a wide set of soil fertility loss issues which are declining of soil fertility due to biological and environmental factors as well as blanket fertilizer application throughout the country without considering soil types and agro-ecological are among the factors that pronounced in low yielding of food cr...