Volume 8, Issue 33 (vol. 8, no. 33, 2020 2019)
2019, 8(33): 373-386 |
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khalaj H, hasan abadi T, delfani M. Effect of dual microorganism inoculations of seed on the amount of plant growth regulators and barley grain yield under different nitrogen levels. Plant Process and Function 2019; 8 (33) :373-386
URL: http://jispp.iut.ac.ir/article-1-1154-en.html
URL: http://jispp.iut.ac.ir/article-1-1154-en.html
1- 1 Faculty member, Department of Agriculture, Payame Noor University, Tehran-Iran , hamideh_6285@yahoo.com
2- Young Researchers and Elites Club, Tehran North Branch, Islamic Azad University, Tehran, Iran
3- Department of Agronomy and Plant Physiology, University of Ilam, Iran
2- Young Researchers and Elites Club, Tehran North Branch, Islamic Azad University, Tehran, Iran
3- Department of Agronomy and Plant Physiology, University of Ilam, Iran
Abstract: (2231 Views)
هIn order to investigate the effects of dual phosphorus and Azospirilum solubilizing bacteria on hormonal condition and barley grain yield under different levels of nitrogen, an experiment was conducted in Agricultural Research Station of Islamic Azad University of Karaj, in 2014. The experiment was carried out as a factorial split- plot design based on randomized complete block design with three replications. The treatments included the main factor of the nitrogen fertilizer in four levels (0, 50, 75 and 100%, equivalent to zero, 150, 225 and 300 kg per Hectares respectively) and sub factors including Azospirilum lipophorm bacteria in two levels (application and non-application of bacteria) and also Pseudomonas fluorescens bacterium in two levels (application and non-application of bacteria). The results showed that application of 75% nitrogen and A. lipophorum and the application of the main treatment of P. fluorescens produced the highest amount of auxin hormone. The interactions of urea and A. lipophorum and the dual interactions of A. lipophorum and P. fluorescens produced the highest levels of cytokinin hormone. The levels of hormones showed in the triple treatments of 100% nitrogen, A. lipophorum and P. fluorescens bacteria compared to the control treatment (not treatments) had 261.1% difference. The highest grain yield was observed in p. fluorescens (4700 kg ha-1) treatment and using 100% application of urea and A. lipophorum (5500 kg ha-1). As a result, the application of nitrogen fertilizer and the use of both types of biological fertilizers led to an increase in the production of hormones that ultimately increased root growth, ultimately, increased water absorption and nutrients from the soil and increased grain yield.
Type of Study: Research |
Subject:
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Received: 2018/11/27 | Accepted: 2019/02/13 | Published: 2020/05/11
Received: 2018/11/27 | Accepted: 2019/02/13 | Published: 2020/05/11
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