Effects of N, Fe and Zn Nutrition on Vegetative and Reproductive Growth and Fruit Quality of Grapevine (Vitis viniferea L.)

This research aimed to study on effect of foliar spraying with zinc (aszinc sulphate), nitrogen (as urea) and iron (as sulphate and chelated fe) ongrowth parameters, quality of fruit, flower characteristics, chemical constituentsand nutrients content of leaves on grapevine. applied nutrients were zincsulphate (zn) of 0.0 and 1.5gl-1 and urea (n) at 0.0 and 5 gl-1 and fe (1) control(low fe), (2) fe (iii)-chelate 3mgl-1, (3) 20 g/ per tree soil application and (4)fe sulfate (feso4) 3mgl-1 which were applied both alone and in combinationswith each other as foliar spraying. in a pot experiment, effects of n, zn and fefertilizer were evaluated on concentrations of fe, n and zn in leaves, yield andthe fruit quality of grape (vitis viniferea). results showed that application ofurea and zn and fe increased vegetative growth and length of young branch.highest size of berry achieved in n2= 5 gl-1× zn= 1.5 mg l-1 × fe= chelates fe3 mg l-1. nitrogen (n), iron (fe) and zink (zn) are essential element in grapevine causes increased contain n, zn and fe on leaves. also results showed nfe had significant difference (p ? 0.05) on quality and quantity(?) characters ingrape vine, zn and fe have no significant difference (p ? 0.05).