Misskire, Y., School of Natural Resources Management and Environmental Sciences, Haramaya University, Dire Dawa, Ethiopia; Mamo, T., Center for Soil and Fertilizer Research in Africa (CESFRA), Mohammed VI Polytechnic University, Benguerir, Morocco; Taddesse, A.M., Department of Chemistry, Haramaya University, Dire Dawa, Ethiopia;
Vertisols are characterized by deficiency of nutrients and recently, potassium (K), a major plant nutrient in crops, is gaining attention because of crop removal, fixation by clay minerals and leaching. A field experiment was conducted during the 2015 and 2016 main cropping seasons to test the effect of potash fertilizer on Vertisols of East Gojjam at Gudalima and Dejen/Tik sites using teff crop. The K rates (applied as muriate of potash) were 0, 50,100, and 150 kg ha−1. The experiment was laid out in a randomized complete block design in three replications. The results indicated that the plant height, panicle length, number of effective tillers, dry matter and grain yield of teff increased significantly (P < 0.05) with applied K. The highest dry matter and grain yield were obtained from the application of 100 kg ha−1 KCl. Total uptake of N, P, and K (6966.4 and 2418.2 kg ha−1, respectively) were enhanced significantly with K treated plots than those without and K efficiency was improved due to the rate of K. The present study demonstrated the importance of K application to supplement NPS for optimum dry matter and grain yield of teff on Vertisols of the study sites. © 2019, © 2019 Taylor & Francis Group, LLC.
Misskire, Y., School of Natural Resources Management and Environmental Sciences, Haramaya University, Dire Dawa, Ethiopia; Mamo, T., Center for Soil and Fertilizer Research in Africa (CESFRA), Mohammed VI Polytechnic University, Benguerir, Morocco; Taddesse, A.M., Department of Chemistry, Haramaya University, Dire Dawa, Ethiopia;
Vertisols are characterized by deficiency of nutrients and recently, potassium (K), a major plant nutrient in crops, is gaining attention because of crop removal, fixation by clay minerals and leaching. A field experiment was conducted during the 2015 and 2016 main cropping seasons to test the effect of potash fertilizer on Vertisols of East Gojjam at Gudalima and Dejen/Tik sites using teff crop. The K rates (applied as muriate of potash) were 0, 50,100, and 150 kg ha−1. The experiment was laid out in a randomized complete block design in three replications. The results indicated that the plant height, panicle length, number of effective tillers, dry matter and grain yield of teff increased significantly (P < 0.05) with applied K. The highest dry matter and grain yield were obtained from the application of 100 kg ha−1 KCl. Total uptake of N, P, and K (6966.4 and 2418.2 kg ha−1, respectively) were enhanced significantly with K treated plots than those without and K efficiency was improved due to the rate of K. The present study demonstrated the importance of K application to supplement NPS for optimum dry matter and grain yield of teff on Vertisols of the study sites. © 2019, © 2019 Taylor & Francis Group, LLC.