The effect of different nitrogen doses on the nitrogen uptake and use efficiency in bread wheat in Eskişehir conditions

This study was carried out in Eskişehir Osmangazi University Faculty of Agriculture Department of Field Crops research and application area in 2011-2012 and 2012-2013 production seasons. Different nitrogen doses (0-5-10-15-20 kg N/ ha) were found in bread wheat varieties / lines (ES09-SE7, ES09-SE9, ES10-KE2, Çetinel 2000, Alpu-01, Nacibey, Bezostaja-1, Harmankaya 99) recommended for irrigated conditions in Eskişehir. The effects of 15-20 kg N / ha) on nitrogen utilization efficiency properties nitrogen utilization efficiency, nitrogen utilization efficiency, nitrogen uptake efficiency were investigated. With increasing nitrogen doses, nitrogen intake efficiency and efficiency of benefiting from nitrogen increased, while nitrogen use efficiency increased up to 15 kg / ha nitrogen dose and suddenly started to decrease in the next dose. In the study investigating the effect of watery wheat on nitrogen utilization efficiency, it was determined that Harmankaya variety at a nitrogen dose of 15 kg / ha had the highest performance in terms of nitrogen use efficiency.