Effect of nitrogen fertilizer rate and timing on sorghum productivity in Ethiopian highland Vertisols
Demelash, Nigus; Zucca, Claudio; Strohmeier, Stefan; Ziadat, Feras M.; Bayu, Wondimu; Ayalew, Baye; Klik, Andreas; Tefera, Meron. 2018. Effect of nitrogen fertilizer rate and timing on sorghum productivity in Ethiopian highland Vertisols. Archives of Agronomy and Soil Science, 64(4), pp. 480-491.