The Effects of Different Nitrogen Fertilizer Doses on the Yield and Yield Parameters of Safflower in Ankara Conditions

Safflower is a drought tolerant crop plant with less environmental and soil requirements compared to other oilseed plants. This study was carried out in Ankara to determine the effects of different nitrogen doses on the yield and yield components applied to safflower genotypes in 2015 and 2016.Different doses (0, 5 and 15 kg da-1) of ammonium sulphate were applied to safflower cv. Din？er, Linas and a safflower line developed by Bahri Da？da？ International Agricultural Research Institute (BDUTAE Line)were used as material. The research was set up according to Factorial Random Blocks design with three replications. The highest yield of 160.3 kg da-1 and 175.0 kg da-1 was obtained from the first and second year using cv. BDUTAE Line and cv. Din？er after application of 5 kg da-1 nitrogen each in the same order. The highest oil content of 39.94% (cv. Din？er and at the dose of 5 kg da-1 nitrogen doses during first year) and 40.77% (control- during second year) was noted from cv. Linas. Oil yield (56.67 kg da-1) was obtained from the Din？er variety at the dose of 5 kg da-1 nitrogen in the first year. The second year of the study the highest oil yield was obtained 56.63 kg da-1 from the control and cv. Linas. As there are no significant differences between the applied nitrogen doses in terms of yield and yield parameters, the cv. Linas of safflower can be best suggested for cultivation using 5 kg da-1 nitrogen dose