Abstract
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−1 respectively. According to the results of this experiment, consumption of chemical fertilizer of triple super phosphate was reduced equal to 50% using Barvar-2 phosphate biofertilizer and consumption of chemical fertilizer of urea was reduced equal to 25% using nitroxin biofertilizer.
Highlights
Sesame is a yearling plant and one of the oldest oilseed plants that is compatible with hot and semi-hot areas and consists of a high-percent oil (45%) and protein (19% - 25%) [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
Treatments including complete use of triple superphosphate chemical fertilizer and Barvar-2 phosphate biological fertilizer with 100 kg triple superphosphate chemical fertilizer per hectare assigned into a same statistical group in terms of plant height and indicated the highest plant height (Table 3)
Summary
Sesame is a yearling plant and one of the oldest oilseed plants that is compatible with hot and semi-hot areas and consists of a high-percent oil (45%) and protein (19% - 25%) [1]. Biologic fertilizers consist of some beneficial microorganisms that are produced for specific purposes such as nitrogen fixation, and releasing phosphate, potassium, and iron ions These microorganisms usually are placed around the root helping the plant to nutrient uptake through cohabitation [3]. These bacteria have more than one role so that they help to uptake a specific element and can absorb other elements, reduce illnesses, improve soil structure, more promote plant growth, increase quantity and quality of product and increase plant tolerance against environmental stresses [4]. [9] reported that integrated application of biological and chemical nitrogen fertilizer would increase yield and yield components of canola compared to control treatment (treated plants with nitroxin without using chemical nitrogen fertilizer). This study was conducted to investigate the effect of biological nitroxin, Barvar-2 phosphate fertilizers on increase in seed yield, and sesame oil in weather conditions of Khoy Province
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