Effect of spraying boron and vitamin B6 nanominerals on mung bean growth (Vigna radiate L.)

Abstract

A field experiment was carried out in the experimental field of the Department of Field Crops Sciences - College of Agricultural Engineering Sciences - University of Baghdad during the summer season of 2021 to study the effect of spraying nano-mineral boron and vitamin B6 on the growth of mung bean crop. The experiment was carried out in the order of the factorial trials according to the RCBD randomized complete block design and with three replications. The first factor included spraying nano-boron at two concentrations (100 and 150 mg. l-1 ) and metallic boron at a concentration of 100 mg. l-1 , as well as the comparison treatment (spraying with water only). In comparison, the second factor included spraying Vitamin B6 in three concentrations (100, 150 and 200 mg. l-1 ) and the comparison treatment (spraying with water only). The results indicated that the concentration of 100 mg. l-1 boron nanoparticles exceeded by giving it the highest averages for plant height, number of bacterial nodes, number of branches, number of leaves, leaf content of chlorophyll, number of flowers, number of pods, the lowest average for the percentage of precipitation and the highest average for the fertility rate, compared to the control treatment that gave the lowest averages. The results also showed that the concentration exceeded 200 mg. l-1 of vitamin B6 by giving it the highest average for each of the plant height, number of bacterial nodes, number of branches, number of leaves, leaf content of chlorophyll, number of flowers, number of pods, the lowest drop percentage and the highest fertility rate as compared to the comparison treatment that gave the lowest averages. The interaction significantly affected the concentrations of boron and vitamin B6, as the combination gave 100 mg. l-1 of nano-boron with 200 mg. l-1 of vitamin B6, the highest average for plant height and number of bacterial nodules reached 151cm and 12.53 plant node-1 compared to the comparison treatment, which gave the lowest average. Combining 100 mg. l-1 of nano-boron with 100 mg. l-1 of vitamin B6 gave the highest average number of branches and flowers compared to the comparison treatment, which gave the lowest average. Keywords: boron, nanospray, vitamin B6, mung bean.