Abstract
Potassium fertilization was started in 2014 using K containing blended fertilizers in Ethiopia. However, there was no evidence whether the recommended rates of K in the blended formula (which is be...
Highlights
Wheat (Triticum aestivum L.) is an important food crop in Ethiopia, which accounts for 15.65% of the total cereal output (Central Statistical Authority of Ethiopia [CSA], 2015)
This result is in agreement with the research findings of Kebede and Yamoah (2009) who reported that organic carbon levels are usually low in Vertisol when they are cultivated continuously
There was an increasing trend in spike length with increasing K application rates even though it was statistically similar except with the control treatment. These findings are in accordance with the research findings of Khan, Gurmani, Gurmani, and Zia (2007) who reported that spike length of wheat was not significantly affected by any of the K levels
Summary
Wheat (Triticum aestivum L.) is an important food crop in Ethiopia, which accounts for 15.65% of the total cereal output (Central Statistical Authority of Ethiopia [CSA], 2015). For the past several years, farmers in the country had used blanket recommendation of only Urea and DAP (Di Ammonium Phosphate) as an input to improve soil fertility and increase crop production including wheat. The role of potassium fertilizer on crop production in Ethiopia was not prioritized for many years due to the view that potassium was not deficient in Ethiopian soils. Out of the assessed Vertisol dominated soil reference groups of Tigray region in northern Ethiopia, 76% were deficient in Potassium (Kebede & Yamoah, 2009). The soil fertility atlas of Tigray, which was developed by Ethiopian Soil Information System (EthioSIS) indicated a potassium deficiency in various districts of the region, including Enderta, where this study took place (Ethiopian Soil Information System [EthioSIS], 2014)
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