THE EFFECT OF SPRAYING ORGANIC ACIDS, NANO AND TRADITIONAL IRON IN THE GROWTH AND YIELD OF THE MUNG BEAN (VIGNA RADIATE L.)

Abstract

This field experiment was conducted in 2020 at the Research Station of College of Agriculture, University of Anbar (Anbar Province, Iraq) in order to investigate the effect of spraying of different organic acids on the mung bean properties. The treatments are: control (without addition A0), the humic acid (H), the amino acid of valine (V) and the auxin (growth regulator) of indole acetic acid (I) with concentrations of 100 mg.L-1 for each one. The second factor is the addition of iron spray formulas with different concentration (0, 20 mg.L-1 Nano-Iron (NI), 20 mg.L-1 chelating NI and 100 mg.L-1 metal iron in the form of iron oxide take the symbol (Fe0, FeN, FeNC and FeT) sequentially. The factorial experiment of randomized completely block design (RCBD) with three replications was used. The results showed significant increase in all studied traits due to H and different Fe forms. The interaction between treatments H and FeN achieved the highest values of plant’s height (PLH), total grains yield (TGY) and the iron concentration in grains (ICG) with increasing percentage of 66.2, 65.2 and 253.6%, respectively in comparison with control treatment Fe0 A0. The highest values of leaf area (LA), dry weight of green part (DWGP), iron concentration in leaves (ICL) and protein concentration in grains (PCG) were recorded at FeN I treatment with increasing percentage of 83.2, 52.9, 349.2 and 163.8% successively compared to control treatment Fe0 A0. Moreover, the highest value of fertilization efficiency (FE) was 63.5% in the treatment of FeN H compared to control Fe0 A0.