Effect of combined application of chemical and biological phosphorus and nitrogen fertilizers on yield and yield components of wheat
Subject Areas :Mahsa Karimi 1 , Seyed Keyvan Marashi 2
1 - Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
2 - Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Keywords: Grain yield, Wheat, Biofertilizers, chemical fertilizers,
Abstract :
This experiment was conducted based on as factorial in a randomized randomized block design with 3 replications. The experiment was conducted with two factors, The first factor included four levels of phosphorus fertilizer: 1- 100% triple super phosphate. 2- 70% of triple super phosphate and the remainder through bio-fertilizer phosphate fertilizer2. 3- 40% of triple super phosphate and the remainder through bio-fertilizer phosphate fertilizer2. 4- 100% bio-fertilizer phosphate fertilizer2. The second factor included Three levels of nitrogen fertilizer: 1- 100% of urea. 2- 70% urea and the remainder through Azetobacter. 3- 40% urea and the remainder through Azetobacter. Results showed that the difference between the levels of phosphate fertilizers in terms of number of spike, seed number per spike, seed weight, seed yield and biological yield at 1% level of probability; but harvest index difference was not significant. At different levels of nitrogen, number of spike, seed yield, biological yield and harvest index at 1% level of probability; and number of spike, seed weight and plant height 5% level of probability were significant. The maximum seed yield obtained in 70% of triple super phosphate and the remainder through bio-fertilizer phosphate fertilizer2 and 70% urea and the remainder through Azetobacter with (6740 kg/ha), minimum seed yield obtained in 100% bio-fertilizer phosphate fertilizer2 and 100% of urea with (3481 kg/ha). According to the conclusion the application of 70% of triple super phosphate and the remainder through bio-fertilizer phosphate fertilizer2 and 70% urea and the remainder through Azetobacter increases yield and yield components and in the region recommended.
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