Effects of Foliar Application of Fe-EDDHA, Power Mix Bio-fertilizer, and Casmocal on the Growth and Yield of Strawberry (Fragaria × ananassa Duch.) cv. 'Rubygem'

This study was conducted from October 2022 to August 2023 at the College of Agricultural Engineering Sciences, University of Duhok, Kurdistan, Iraq, to determine the influence of foliar nutrient sprays on the vegetative growth, leaf mineral content, and yield traits of 'Rubygem' strawberry plants."The treatments included three concentrations of each factor, Casmocal (Ca) (0, 2 and 4 ml.L-1), Power Mix bio fertilizer(PM) (0, 2 and 5 ml.L-1), and iron (Fe) in the form of Fe-EDDHA (0, 40, and 80 mg.L-1). The results demonstrated that Casmocalat4ml.L-1significantly improved some parameters, including total leaf chlorophyll content, leaf area, leaves nutrient content (P, K and Ca %) and yield per plant. However, the highest leaf total chlorophyll, leaf area, leaf dry matter percentage%, leaf nutrient content (N%, K% and Femg.L-1)and yield per plant were recorded when high level of Power Mix (5ml.l-1) was sprayed. Fe at 80 mg.L-1enhanced (leaf total chlorophyll, leaf dry matter percentage, leaves nutrient content (N%, P%,Ca% and Fe mg.L-1)and yield per plant. Additionally, the findings indicated that combination of calcium, Power Mix and iron had optimized enhancement on the growth and productivity of “Rubygem” strawberry plants.