Effect of Different Ferrous Concentrations on the Growth Characteristics of Genotypes of Sorghum bicolor L.

Abstract

A field experiment was carried out during the fall season of the agricultural season 2022 AD at a research station of the Department of Field Crops, College of Agriculture - University of Tikrit in Salah al-Din Governorate, located at longitude 43.679 degrees east and latitude 34.616 degrees north of the equator in gypsum soil in order to know the effect of foliar feeding with two levels of Iron In addition to the comparison treatment, which is (0, 75, and 150) mg L on fivegenotypes of white corn, namely (J, Giza, Inqaz, Rabeh, and Li). Ferrous sulfate was used as a source of iron. Using the randomized complete block design (RCBD) with three replications, and each replicate contains (15) experimental units, each experimental unit contains four lines, the distance between one line and another is 60 cm, and between one line and another is 20 cm, to study growth characteristics. The Li variety was superior in leaf area and the percentage of iron in the leaves, reaching (4086.61 cm2 and 60.92 mg Fe/kg). As for the following characteristics, the number of days from sowing to 50% flowering and plant height, the J variety was superior to (99.11 days and 177.48 cm). and the characteristics, number of leaves per plant, estimation of chlorophyll A and estimation of chlorophyll B were lost The variety was superior to Giza, which reached (23.40 μg.cm2, 19.83 μg.cm2, and 16.43 leaves). As for the fertilizer additions, it was superior to (Fe2) and gave the highest averages in the characteristics of plant height, number of leaves per plant, leaf area, chlorophyll A, chlorophyll B, and iron content inthe leaves, as it reached 157.94 cm, 15.80 leaves, 3783.76 cm 2, and 23.34 μg. cm2 and 21.03 μg.cm2 and 64.38mg Fe / kg, respectively, and the addition of Fe (1)) in the characteristic of the number of days from sowing to 50% flowering exceeded 95.46%. The combination (Li + fertilizer additives (Fe2) was characterized by giving the highest averages in the characteristics of leaf area and the percentage of iron in the leaves. As for the characteristics, the number of days from cultivation until 50% flowering and plant height, it was outperformed by variety J + fertilizer additives (Fe2) and the characteristics of the number of leaves per plant Estimation of chlorophyll A and estimation of chlorophyll B were lostIt is superior to Giza + fertilizer additives (Fe2).