Effect of Plant Spacing and Fertilizer Management on the Yield Performance of BRRI dhan39 under Old Brahmaputra Floodplain Soil

Abstract

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, Bangladesh, from June to December 2015 to investigate the effect of spacing and fertilizer management on the yield of transplanted Aman rice cv. BRRI dhan39.

Experimental Design

The experiment comprised:

• Five spacings:
  • 25 × 5 cm
  • 25 × 10 cm
  • 25 × 15 cm
  • 25 × 20 cm
  • 25 × 25 cm
• Four fertilizer schedules:
  1. Control (No manure and no fertilizer)
  2. Recommended dose of inorganic fertilizer (80-60-40 kg N, P₂O₅, K₂O ha⁻¹, respectively + 60 kg ha⁻¹ gypsum + 10 kg ha⁻¹ ZnSO₄)
  3. 75% recommended dose of inorganic fertilizer + cow dung at 5 t ha⁻¹
  4. 75% recommended dose of inorganic fertilizer + poultry manure @ 2.5 t ha⁻¹

The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications.

Results

• The highest values for plant height (104.60 cm), number of total tillers hill⁻¹ (11.03), panicle length (22.25 cm), grains panicle⁻¹ (109.00), and grain yield (4.42 t ha⁻¹) were found in 25 × 15 cm spacing.
• Nutrient management:
  • 75% recommended dose of inorganic fertilizers + cow dung at 5 t ha⁻¹ outperformed other treatments with:
    • Plant height: 107.50 cm
    • Total tillers hill⁻¹: 10.40
    • Effective tillers hill⁻¹: 7.68
    • Panicle length: 22.26 cm
    • Grains panicle⁻¹: 111.70
    • Grain yield: 4.14 t ha⁻¹
• Control treatment (no manures and no fertilizers) showed the lowest values for all parameters.
• Highest grain yield (4.57 t ha⁻¹) was obtained with 25 × 15 cm spacing + 75% recommended dose of inorganic fertilizers + cow dung at 5 t ha⁻¹.
• Lowest grain yield (2.50 t ha⁻¹) was found in 25 × 5 cm spacing + control (no manures and fertilizers).Therefore 25 × 15 cm spacing combined with 75% recommended dose of inorganic fertilizers + cow dung at 5 t ha⁻¹ appeared to be the most promising practice for transplant Aman rice cv. BRRI dhan39 cultivation.

DOI

Pages

37 - 40

Creative Commons

Copyright

© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords