Yield and Nitrogen Use Efficiency of Locally Improved Rice Varieties in Rice Based Tidal Flooded Ecosystem of Bangladesh

Authors

  • MAA Mamun Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706
  • MM Haque Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706
  • QA Khaliq Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706
  • MA Karim Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706
  • AJMS Karim Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706
  • AJ Mridha Bangladesh Rice Research Institute, Gazipur 1701
  • MA Saleque Bangladesh Rice Research Institute, Gazipur 1701

DOI:

https://doi.org/10.3329/baj.v19i2.31851

Keywords:

Grain yield, nitrogen uptake, nitrogen harvest index, rice cultivars, tidal ecosystem

Abstract

An on farm field experiment was conducted to evaluate locally improved aman rice varieties in terms of nitrogen use efficiency and grain yield in southern region of Bangladesh. The treatments were: i. deep placement of urea (UDP) before panicle initiation stage and ii. farmers practice (FP/control). The locally popular rice varieties were used as planting materials. Higher panicles m-2 and grains panicle-1 was obtained from UDP application compared to FP. Nitrogen fertilization increases grain and straw nitrogen content significantly. Application of urea before panicle initiation stage gave considerable higher grain yield in all cultivated varieties. Cultivated aman varieties produced 2.0 to 2.5 t ha-1 grain without application of N fertilizer. But, cultivated local variety Razashail, Kutiagoni, Sadachikon, Sadapajam, Lalmota and Sadamota gave 3.0 to 3.5 t ha-1 grain in tidal prone areas with UDP. Hence, application of urea gave yield advantage by 0.5 to 1.0 t ha-1. The highest internal, agronomic, recovery and physiological efficiency; nitrogen harvest and grain yield efficiency index was obtained from Kutiagoni, Lalpayka, Sadachikon, Sadapajam, Moulata and Lalmota. Based on the yield and nitrogen fertilizer use efficiency, it could be concluded that UDP before panicle initiation stage is an effective option of urea application for rice cultivation in tidal prone areas.

Bangladesh Agron. J. 2016 19(2): 39-49

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Author Biography

MAA Mamun, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706



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Published

2017-03-10

How to Cite

Mamun, M., Haque, M., Khaliq, Q., Karim, M., Karim, A., Mridha, A., & Saleque, M. (2017). Yield and Nitrogen Use Efficiency of Locally Improved Rice Varieties in Rice Based Tidal Flooded Ecosystem of Bangladesh. Bangladesh Agronomy Journal, 19(2), 39–49. https://doi.org/10.3329/baj.v19i2.31851

Issue

Vol. 19 No. 2 (2016)

Section

Original Articles

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