In order to investigate the effects of Barvar-2 phosphate biofertilizer and nitroxin biofertilizers on agronomical characteristics of sesame, an experiment was carried out as factorial based on randomized complete block design with three replications and two factors in Khoy city, northwest of Iran, in 2014 growing seasons. The factors were as follows: phosphorus fertilizer in three levels (control, barvar-2 phosphate bio-fertilizer with 100 kg triple superphosphate per hectare and 200 kg triple superphosphate per hectare) and nitrogen fertilizer in four levels (control, nitroxin bio-fertilizer with urea at rate of 100 kg·ha−1, nitroxin biofertilizer with urea at rate of 150 kg·ha−1 and urea at rate of 200 kg·ha−1). The results showed that a significant effect of nitrogen and phosphate biofertilizer, on plant height, branches per plant, pods per plant, seed in pod, oil percent, seed yield and harvest index. Maximum seed yield of 1274.37 and 1232.5 kg·ha−1 was obtained from treatments of 200 kg·ha−1 triple superphosphate and barvar-2 phosphate biofertilizer besides 100 kg·ha−1 triple superphosphate. For nitrogen biofertilizer, maximum seed yield of 1264.83 and 1246.12 kg·ha−1 was obtained from treatments of 200 kg·ha−1？urea and nitroxin biofertilizer besides urea 150 kg·ha−
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