The effect of spraying with iron and boron on some chemical contents of the leaves of two hybrid broccoli plants

Abstract

The field experiment was conducted during the 2024-2025 agricultural season at the Agricultural Research Station of the College of Agriculture at the University of Basra, with the aim of studying the effect of four concentrations of a combination of boron and iron (0,  150 iron, 100 boron, 150 iron + 100 boron) mg L-1 on two hybrids of broccoli plants (umbrella, jasmine,). Completely randomized block factorial experiment with three replications, the most important results are summarized as follows: The results obtained showed Spraying with a concentration of (150 iron + 100 boron)  mg L-1 was superior to the rest of the concentrations in the chemical contents of the studied leaves (carbohydrates, chlorophyll, and the nutrients nitrogen, phosphorus, and potassiuim), as it gave 6.92%, 3.15 mg 100 gm-1 - fresh weight, 5.20%, 0.531%, and 2.175%, respectively . Additionally, the outcomes showed The Umbrella hybrid also excelled in the studied chemical contents (carbohydrates, chlorophyll, percentage of nitrogen, phosphorus, and potassium), as it gave the highest percentage, reaching 6.55%, 2.83 mg 100 gm-1 fresh weight, 4.88%, 0.468%, and 2.067%, respectively. The binary interactions of the experimental factors also had a significant effect on the studied traits, as the interaction between spraying (150 iron + 100 boron) mg L-1  on the umbrella hybrid was superior compared to the rest of the interactions.