Effect of foliar feeding with magnesium and manganese on some physiological traits of Faba bean (Vicia Faba L.)

Abstract

During the winter of 2022–2023, a field experiment was conducted in the Al-Majd region of the Al–Muthanna Governorate. to investigate the impact of spraying Faba crop (Luz De Otono) cultivar with four different magnesium concentrations (0, 40, 80, 120 mg Mg l-1 ) and three different manganese concentrations (0, 20, 40 mg Mn l-1 ). The experiment was conducted using the R.C.B.D. randomize complete block design with three replications and the factorial experiments inside a split method. The main plots represented the manganese concentrations, while the sub-plots represented the magnesium concentrations. The outcomes demonstrated a considerable impact of magnesium spraying at a concentration of 120 mg Mg l -1 on the properties of chlorophyll a, leaf area and its index, and the relative rate of growth, with rates of increase of 31.53%, 36.51%, 36.41%, and 38.70% compared to the comparison treatment. The addition of the higher concentration of manganese led to a significant increase in leaf area, its index, and the relative rate of growth; it gave averages of 4347.25 cm2 , 2.31, and 0.41 g day-1 for traits, respectively, compared to the no-spray treatment. The interaction between magnesium and manganese showed a significant effect on the leaf area, as a combination (Mg3 x Mn2) gave the highest average in this trait, amounted to 5701.00 cm2 , and had a significant effect on the leaf area index, and the relative rate of growth, the combination of (Mg3 x Mn1) gave the highest average for the relative rate of growth was 0.56 g day-1 .