Effect of N on Growth, Antioxidant Capacity, and Chlorophyll Content of Sorghum

Nutrient management is an important challenge to agricultural sustainability. In this study, the effects of three nitrogen (N) fertilizer levels (N1 = 0, N2 =150, and N3 300 kg ha−1) on growth, chlorophyll content, antioxidant capacity two grain sorghum cultivars were investigated in a two-year (2017 2018) field trial. The treatments arranged randomized complete block design with replicates. Nitrogen application (N2 N3) improved plant growth enzymes activity; compared control N1, N increased germination by 18.7%, leaf length 7.5%, weight 10.8%, specific 11.6%, height 2.5% Siyong 3180 cultivar width 12.8% stem 27.4% CFSH30 cultivar. 2017 2018, increasing enhanced superoxide dismutase (SOD), catalase (CAT), peroxidase (POD) activities protein content both cultivars. While 2017, decreased Our study showed that supply could improve morpho-physiological sorghum, but was relatively more effective for