Determination of Optimum Nitrogen Level for Maximizing Yield of Two HYV Boro Rice Varieties in Bogura Region, Bangladesh

Authors

  • S M M S Tonmoy Farm Management Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
  • T K Roy Entomology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
  • A Sannal Plant Pathology Division, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
  • M A U Razu Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
  • M M Rana Agronomy Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

DOI:

https://doi.org/10.3329/baj.v26i2.76336

Keywords:

HYV, nitrogen levels, BRRI dhan89, BRRI dhan100, harvest index

Abstract

Application of N fertilizer is very crucial for rice, but both excessive and mild reduced productivity. A field experiment was conducted during the Boro 2021-2022 season to find out the optimum dose of N fertilizer for higher yield. The trial was conducted in a factorial RCBD design with three replications. Factor A: Two varieties of rice viz. BRRI dhan89 and BRRI dhan100 and B: Five Nitrogen levels i.e., 0, 90, 120, 150, and 180 Kg ha−1. Yield and yield-contributing traits varied significantly with N levels. BRRI dhan89 outyielded BRRI dhan100 due to its varietal potential and longer life cycle. The highest tiller number hill−1, panicle number hill−1, panicle length, filled grain panicle−1, grain yield, biological yield and harvest index and lowest spikelet sterility were obtained from 120 kg N ha−1 irrespective of variety. The result revealed that the combination of both varieties with 120 kg N ha−1 followed by 90 Kg N ha−1 in maximizing rice productivity while avoiding excess use of N fertilizer.

Bangladesh Agron. J. 2024, 26(2): 41-48  

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Published

2024-09-24

How to Cite

Tonmoy, S. M. M. S., Roy, T. K., Sannal, A., Razu, M. A. U., & Rana, M. M. (2024). Determination of Optimum Nitrogen Level for Maximizing Yield of Two HYV Boro Rice Varieties in Bogura Region, Bangladesh. Bangladesh Agronomy Journal, 26(2), 41–48  . https://doi.org/10.3329/baj.v26i2.76336

Issue

Vol. 26 No. 2 (2024)

Section

Original Articles

License

Copyright (c) 2024 S M M S Tonmoy, T K Roy, A Sannal, M A U Razu, M M Rana

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