Evaluation of Several Genotypes of Vigna radiata Bean for Spraying with Manganese and Zinc and Their Effects on Growth Characteristics

Abstract

Three cultivars of the crop Almash (Green Indian VC6089A10, Green Indian VC6173B1319, and Black Indian Gold Star) were tested in a field experiment during the 2022 growing season in Ramadi, Anbar province, to determine the impact of spraying levels of zinc (0, 25, and 50) mg Zn L-1 and manganese (0, 30, and 60) mg Mn L-1 on some growth characteristics. The experiment was conducted using a randomized complete block design (RCBD) with three replicates, with each treatment being tested in a separate split plot. The study found that there were statistically significant differences between zinc levels, with the level giving 50 mg Zn L-1 having the highest rates for plant height (54.30 cm), number of branches per plant (7.34), plant branch-1, number of days from planting to flowering (40 days), leaf area (204.19) cm-1, and leaf chlorophyll content (33.93) (g), and the rate of crop growth (17.39) g, while the level exceeding 30 mg Mn L-1 had lower rates for plant height (These indicators were profoundly influenced by zinc spraying, manganese spraying, and different types of mung bean crops.