TY - JOUR T1 - Effect of Nitrogen and Cycocel on Nitrogen Content, Remobilization and Use Efficiency in Safflower under Different Planting Densities TT - اثر نیتروژن و سایکوسل بر محتوا، انتقال مجدد و کارایی مصرف نیتروژن گلرنگ تحت تراکم‌های مختلف کاشت JF - JCPP JO - JCPP VL - 3 IS - 7 UR - http://jcpp.iut.ac.ir/article-1-1800-en.html Y1 - 2013 SP - 11 EP - 23 KW - Protein KW - Seed yield KW - Shoot nitrogen content. N2 -   To study the effect of cycocel, nitrogen and planting density on nitrogen (N) content, remobilization and use efficiency of Esfahan 14 safflower cultivar, a field experiment was carried out as a factorial split-plot based on randomized complete blocks design with three replications at Research Farm of College of Agriculture, Yasouj University, in summer of 2010. Main plots were the factorial level of N (50, 100 and 150 kg/ha) and level of cycocel (0 and 10- 6 M ) and subplots were planting density (20, 25 and 33.3 plants / m2). Results showed that the highest N remobilization (1.21%) was gained from 10-6 M cycocel application and the highest amount of N and planting density. The highest N treatment, along with planting density of 25 plants/m 2, produced the highest seed protein (14%) and aerial N at flowering stage (2.15%). The highest grain yield (3146 kg/ha) and N use efficiency (62.9 kg/kg) was obtained from 10-6 M cycocel, lowest N level and 25 plants/m 2. In general, increasing N application and planting density, with cycocel application, increases shoot N content and remobilization. However, lower amount of N application is associated with higher N use efficiency and seed yield. M3 ER -