Response of the Sorghum bicolor crop to the addition of potassium and nitrogen fertilizer


A field experiment was carried out during the autumn season 2017 in Al-Muthanna Governorate (Al-Bander Agricultural Research and Experiment Station of the Faculty of Agriculture / Al-Muthanna University), 2 km from the city center, to determine the effect of different levels of nitrogen fertilization (0, 100, 200 and 400 kg) (0, 30, 60, and 120 kg K-1). In growth and yield characteristics and components of the salvage variety, the units were distributed according to the design of the complete sections randomized by the split-plot design and three replicates. The main parameters included the sub-plot fertilization and the effect of nitrogen fertilization on most of the studied traits, The results of the statistical analysis showed the mental superiority of the fertilizer level of 400 kg N-1 in the traits (Leaf area, leg diameter, Weight of 1000 grains, grain yield and biomass (7956 cm2, 26.43 mm, 3443 heads -1, 36.25 g, 8.970 tons, 1 and 21.20 tons h-1), while 200 kg N-1 was higher in the chlorophyll content of leaves, which was 50.50 mg-2 The level of 120 kg K-1 showed a significant increase in the highest mean (plant height, leg diameter, number of grains In the head, grain yield, biomass and harvest index (144.87 cm, 25.12 mm, 3372 head-1, 7.962 ton -1), respectively, while 30 kg K-1 was superior to the chlorophyll content of leaves, which was 46.88 mg-2. The combination (400 kg N-1 + 120 kg K-1) gave the highest number of grains per head (4277 grains), weight of 1000 tablets (36.50 g) and grain yield (10.72 tons h-1.