Effect of leaf feeding with phosphorus and potassium in some growth and yield characteristics of the mungbean (Vigna radiata L. Wilczek)

Abstract

A field experiment was carried out during the summer season 2016 at a private farm in Hashimia district (20 km south of the center of Babil governorate) to study the effect of foliar fertilization with phosphorus and potassium on growth and yield of mung bean. RCBD with three replicates was used. Four concentrations of potassium K0 (distilled water only) , K1, K2 and K3 (spraying 1000, 2000 and 3000 mg K/L), and four concentrations of phosphorus :P0 (distilled water only) as control, P1, P2 and P3 (spraying 1000, 2000 and 3000 mg P/l). The results of the study were analyzed according to the design and the averages were tested according to the least significant difference. The main results were summarized as follows: Potassium spraying at a concentration of 2000 mg K/L increased significantly most vegetative growth characteristics (plant length, number of branches, number of pods). In addition, phosphorus spraying at 2000 mg P/l gave the highest rate of most vegetative traits (plant height, number of branches, number of leaves, number of pods, dry weight of the plant). The interaction had a significant effect on most traits.