Abstract
Grains of four sorghum cultivars (Tabat, Tetrom, WadAhmed and Gadambellia) were grown for two consecutive seasons under different levels of micronutrients fertilization (0, 2, 4 and 8 g 5kg-1 soil). The protein and basic and acidic amino acids of the grains were investigated. The protein content of both seasons was significantly (P ≤ 0.05) increased with increase in micronutrients dose. However, the grains harvested during the second season had significantly (P ≤ 0.05) higher protein content than that harvested during the first season. The protein content of the cultivar Tabat was increased by 55% as a maximum value during the first season but during the second season it increased by 71% for the cultivar Gadambalia. The basic essential amino acids (histidine, lysine and arginine) and acidic (aspartic and glutamic acid) were significantly (P ≤ 0.05) increased during both seasons with micronutrients dose. Lysine was increased by ˃100% during both seasons for the cultivar Gadambalia.
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