Study of different effects of Nitrogen and Phosphorus on quantitative and qualitative yield of Safflower in Sistan region

In order to examine the effects of different levels of nitrogen and phosphorus on yield quality and quantity of safflower in the Sistan region in 1389-90 experimental field research station of Agriculture and Natural Resources Zahak was performed. Factors examined included from urea source nitrogen levels in the order N1 (control), N2 (80 kg/ha), N3 (160 kg/ha) and N4 (240/ha kg) to 1/3 before planting, 1/3 Phase out the rosette and 1/3 prior to flowering and phosphorus the three levels and the P1 (control), P2 (75 kg/ha), P3 (150 kg/ha) were before. A factorial experiment in randomized complete block design with four replications was conducted on the phenomenon of safflower varieties.
Based on the results of variance analysis for seed yield and oil yield nitrogen use at the level of %1 and %5 and %1 level for phosphorus and nitrogen in oil for %5 level was significant.In this study, the highest seed yield, oil percentage and oil yield to treatment N3P2 (consumption of 160 kg nitrogen and 75 kg phosphorus per hectare) of 4067 kg/ha, %26/81 and 1089 kg/ha and minimum of the control N1P1 (no consumption of nitrogen and phosphorus) of 2208 kg/ha, %25/07 and 552/7 kg/ha, respectively. The seed yield variation, oil percentage and oil yield from the second relation follows that with increasing amounts of fertilizer nitrogen and phosphorus compounds are more bearish trend was observed in these traits. In experiments conducted greatest height, boll number per plant and biological yield the highest levels of nitrogen and phosphorus fertilizer treatment N4P3 (consumed 240 kg N and 150 kg P per hectare) rate 134/4 cm, 12/90 boll and 18050 kg/ha and the least rate of control N1P1 101/4 cm, 5 boll and 11270 kg/ha, and citing surveys taken treatment N3P2 with 47/53 g most and treatment N1P1 with 45/03 g lowest seed weight had the highest proportion.