عنوان مقاله [English]
In order to study the response of nitrogen physiological efficiency of safflower to animal and chemical fertilizers in Kashan region, this study was carried out in 2014. A factorial arrangement of treatments in a randomized complete block design with three replications was used. Chemical fertilizer treatment (F1= Control, F2= 50 kg ha-1 of nitrogen + 25 kg ha-1 of P2O5, F3= 100 kg ha-1 of nitrogen + 50 kg ha-1 of P2O5, F4= 150 kg ha-1 of nitrogen + 75 kg ha-1 of P2O5) and animal manure treatment (M1= Control, M2= 20 ton ha-1, M3= 40 ton ha-1) were assigned in plots. Each plot consisted of 4 rows, 5 m long with 50 cm between rows space and 5 cm between plants on the row was used. Stem height, number of boll per m2, harvest index, oil yield, weight of boll, protein yield, phosphorus percentage, nitrogen absorption amount, nitrogen superficial recovery, nitrogen physiologic efficiency, and phosphorus use efficiency were assessed. Results indicated that the interaction effects of chemical fertilizer and animal manure on the characteristics such as oil yield, weight of boll, protein yield, phosphorus percent, nitrogen absorption amount, nitrogen appear recovery, nitrogen physiologic efficiency, and phosphorus use efficiency were significant. The maximum and minimum oil yield (254.3 and 75.33 kg ha-1) were obtained with the treatment (150 kg ha-1 of nitrogen + 75 kg ha-1 of P2O5 + 20 ton ha-1 of animal manure) and (no application of the chemical and animal manure),respectively.
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