Effects of foliar urea, potassium and zinc sulphate treatments before and after flowering on grain yield, technological quality and nutrient concentrations of wheat

Abstract

This study was carried out under field conditions to determine the effects of foliar urea, potassium sulphate (K2SO4) and zinc sulphate heptahydrate (ZnSO4.7H2O) treatments at vegetative and generative periods on yield, technological quality and mineral element concentrations of wheat (Triticum aestivum L. cv. Altinbasak). Experiments were conducted in two experiment groups (foliar treatments of 0% (Control); 0.5% Urea; 1% Urea; 0.5% ZnSO4.7H2O; 0.5% Urea+0.5% ZnSO4.7H2O; 1% Urea+0.5% ZnSO4.7H2O; 0.5% K2SO4 and 1% K2SO4 were performed in the first experiment and foliar 0%; 0.5% Urea+0.5% K2SO4; 0.5% Urea+1% K2SO4; 1% Urea+0.5% K2SO4; 1% Urea+1% K2SO4 were performed in the second experiment). All treatments increased yield and sedimentation values as compared to the control treatments. In the first experiment, 0.5% urea treatment was prominent for yield, nitrogen and protein and urea+ZnSO4.7H2O treatments for grain zinc and iron concentrations. In the second experiment, 1% urea+0.5% K2SO4 treatments were prominent for protein and grain nitrogen concentrations and 1% urea+1% K2SO4 and 0.5% urea+0.5% K2SO4 treatments for yield.