Effect of exogenous applications and nitrogen dose on nitrogen use efficiency and grain yield of some bread wheat genotypes

This study, investigated the effect of some exogenous on yield and nitrogen use efficiency in different nitrogen dose applications in common wheat, was carried out in the Experiment Area of Çukurova University Faculty of Agriculture, Department of Field Crops during the 2015-2016/2016-2017 wheat growing season. in the study; Glycinebetaine; grain yield, spike weight, spike grain yield, flag leaf area, flag leaf weight, flowering period flag leaf SPAD value, nitrogen harvest index and nitrogen use efficiency, Methanol; nitrogen harvest index, Pyrroline; spike number, flag leaf area, flowering period flag leaf SPAD value and nitrogen harvest index, Silicon; spike number, spike weight, fertility, flag leaf weight, flowering period flag leaf SPAD value, Cytokinin; grain weight, fertility, flag leaf area, flowering period flag leaf SPAD value and nitrogen use efficiency values increased. The relationship between yield and grain size was found to be significant at r = 0.943 **, 0.865 **, 0.947 **, 0.890 **, 0.934 ** and 0.899 ** for glycinebetaine, methanol, pyrroline, silicon and cytokine, respectively. In the study, the grain yield and nitrogen use efficiency of glycinebetaine increased the grain weight and nitrogen utilization efficiency of the cytokine.