Response of Sorghum bicolor L. Cultivars to Added Levels of Salicylic Acid

Abstract

To determine the impact of sorghum variety and salicylic acid concentration on growth characteristics and yield of sorghum crop, a field experiment was applied in the spring of 2022 at the second agricultural research and experiment station of the College of Agriculture at Al-Muthanna University in the Al Bandar area (about 3 km from the city center). The experiment used split plots arranged in a completely random sector and randomized design. Items were plotted in the main plots, while salicylic acid concentrations were plotted in the sub plots. The most important results were the following, there was a significant effect of the salvaged cultivar on plant height (119.15 cm), number of leaves 9.60 (leaf), number of grains per panicle 1617 (grain panicle−1) and grain yield (3.36) tons ha−1, while the variety outperformed Good in the trait of the area of the flag leaf and the diameter of the stem (303.9 cm and 20.35 mm) respectively, as well as a significant effect of the concentration 120 ppm in the trait (number of days from planting until 75% of flowering, number of leaves per plant, number of grains per panicle, weight of 1000 grains, Grain yield, biological yield, harvest index (it amounted to 93.78) days, 9.45 tons of leaf−1 1494 grain panicle−1, 32.96 g, 3.46 tons H−1, 12.59 tons H−1, 29.76%) respectively. With respect to the characteristic of the number of grains per panicle, a significant difference was obtained for the interaction between the factors, as the combination (variety rescued x concentration 120 ppm) recorded a significant superiority, yielding the highest average amount, 2017 grain panicle−1.