Fertilizer Management Using Plant Growth-Promoting Rhizobacteria in Rice Fields

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  • Hashem Aminpanah *1,
  • Saeed Firouzi1,
  1. Department of Agronomy and Plant Breeding, Rasht Branch, Islamic Azad University, Rasht, Iran
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Received: 11/05/2015

Revised: 01/12/2015

Accepted: 02/15/2016

Published in Issue 03/01/2019

How to Cite

Aminpanah , H. ., & Firouzi, S. . (2019). Fertilizer Management Using Plant Growth-Promoting Rhizobacteria in Rice Fields. International Journal of Agricultural Management and Development, 9(1), 67-76. https://oiccpress.com/ijamad/article/view/6951

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Abstract

A field experiment was conducted at the Rice Research Station of Tonekabon, Iran, to determine the effect of seed inoculation with plant growth-promoting rhizobacteria on rice grain yield and yield components under different nitrogen (N) rates. The experimental design was a randomized complete block with factorial arrangement and three replicates. Factors included seed inoculation with plant growth-promoting rhizobacteria [control (un-inoculated), seed inoculation with Azospirillum lipoferum, seed inoculation with Azotobacter chroococcum, and seed inoculation with a combination of A. lipoferum and A. chroococcum] and N rates (100%, 75%, and 50% of recommended nitrogen rates, i.e., 100, 75, and 50 kg N ha-1, respectively). Results showed that the highest grain yield (7875 kg ha-1) was recorded for plants inoculated with a combination of A. lipoferum and A. chroococcum, while the lowest one was recorded for un-inoculated control plants. Moreover, rice grain yield, panicle number per m2, grain number per panicle, and 1000-grain weight increased by 9%, 9%, 18%, and 6%, respectively, as N fertilizer rate increased from 50 to 100 kg ha-1. The highest grain yield (7875 kg ha-1) was obtained when N was applied at the rate of 75 kg ha-1 to seeds inoculated with a combination of A. lipoferum and A. chroococcum.

 

Keywords

  • Azospirillum lipoferum,
  • Azotobacter chroococcum,
  • Rice,
  • nitrogen
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