The effect of different nitrogenous doses on yield and quality characteristics of safflower (Carthamus tinctorius L.)

Safflower (Carthamus tinctorius L.) is a heat and drought resistant oil plant with suitable oil and fat components for human nutrition. Therefore, the safflower should be emphasized for reasons such as increasing edible oir requirement of Turkey, to be grown in the alternative area, to capable of rotation and narrowing the fallow field. This study was established in November 2017 in Diyarbakir Dicle University Faculty of Agriculture Field Crops experimental area. Eight different nitrogen doses (0,3,6,9,12,15,18 and 21 kg / da) were applied to two different safflower (Dinçer and Remzibey) varieties to determine yield and quality characteristics. The research was conducted with 3 replications according to randomized block design. Plant height (cm), number of plant branches (number), number of tables per plant (number), diameter of table (mm), number of seeds (number), harvest index (%), grain yield (kg / da) thousand grain weight (g), oil content (%), oil yield (kg / da) and protein content (%) were investigated. According to the results of the research, plant height is 98,10-105,53 cm, number of branches per plant is 6,60-8,27 units / plant, number of trays is 10,87-15,60 units / plant table diameter is 19,72-23, 12 mm, thousand grain weight 32,44-45,84 grams, the number of seeds in the table 23-28.6 pieces / plant, seed yield 218,92-345,85 kg / da, the oil rate is 28.07% - 34,30% , 3 fat yield 62.33-117.48 kg / da, harvest index 22.23% -30.74%, protein content ranged between 21.58-31.74%. As a result of the evaluations made the highest values were obtained for thousand grain weight and protein content from a nitrogen dose of 0 kg / da; for harvest index, seed yield and oil yield characteristics from nitrogen dose of 9 kg / da; for plant height and number of tables from the nitrogen dose of 12 kg / da; for number of branches from nitrogen dose of 18 kg / da; for number of seeds in the table from nitrogen dose of 21 kg / da. In the study, the highest values for harvest index, oil yield and seed yield were obtained from Remzibey cultivar.