Abstract

Field experiments was carried out during two autumn seasons of 2013 and 2014 in Ramadi City/AL-Anbar province (first season experiment was applied in field at north of Ramadi and the second season experiment was applied in field at east of Ramadi) on corn plant (Zea mays) cv. 5018. Factorial experiment used according to RCBD design under split plot arrangement with three replicates. The experiment aimed to find out zinc foliar nutrition effect at concentrations (0, 40 and 80) mg.l-1 and irrigation periods at (5, 7 and 9) days and their interaction on concentrations of some nutritional elements such as nitrogen, phosphor, potassium, iron and copper in corn shoot. The results showed a significant effect of zinc concentration, Zn2 (80 mg. l-1) in N, P, K, Fe and Cu concentrations in corn plant shoot for each seasons, of 1.48% , 0.26, 2.32% , 69.66mg.gm-1 and 6.25mg.gm-1, respectively, for first season and 1.52%, 0.26%, 2.19%, 67.76 mg. gm-1 and 6.12 mg.gm-1, respectively, for second season. 5 days irrigation was most effective in increased studied element's concentrations for each seasons, of 1.38%, 0.26%, 2.08%, 61.25 mg.gm-1 and 5.80 mg.gm-1, respectively, for first season and in second season of 1.43%, 2.25%, 2.00%, 57.77 mg.gm-1 and 5.75 mg.gm-1, respectively. Results indicated that interaction between Zn2 concentration (80mg.l-1) and 5 days irrigation was more effective in increasing most studied elements.