تاثیر کود زیستی نیتروکسین بر عملکرد و اجزای عملکرد دو رقم گلرنگ تحت سطوح مختلف نیتروژن

Abstract
In order to the effect of Azotobacter and Azosperillium as biofertilizer on biological yield ,grain yield , oil percentage and oil yield of two safflower cultivars under different nitrogen levels, an experiment was carried out as a randomized complete block design with three replication on a farm located at 15 km of Jolfa. Cultivars were Goldasht and Arak 2811, which stained by biofertilizer before implant. Trait of oil percentage is significant in interaction by three factor(Nitrogen fertilizer Biological fertilizer× Cultivar). Highest petal yield (119/2kg/ha) obtained by biological fertilizer in level of 75 kg N/ha, but according to significant interaction between Nitrogen fertilizer× Biological fertilizer in petal yield, maximum amount belong to not using Biological fertilizer in absence of nitrogen fertilizer. Also, according results, grain yield has significant effect for nitrogen fertilizer and cultivars and the highest(1609 kg/ha) grain yield obtained from using 150 k/g nitrogen fertilizer per hectar. The highest percentage of oil(34.4) obtained by using biological fertilizer in absence of nitrogen fertilizer from arak 2811 cultivar. On the other hand, according to superiority of arak 2811 cultivar on trait such as petal yield, biological yield, grain yield and oil percentage seems using this cultivar is more suitable for Jolfa area.