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Influence of Integrated Nutrient Management and Spacing on Growth and Yield of Rice (brri Dhan69)

Romana Akter
Agronomy Division, Bangladesh Rice Research Institute, Bangladesh

Mohammad Adil Badshah
Agronomy Division, Bangladesh Rice Research Institute, Bangladesh

Amena Sultana
Agronomy Division, Bangladesh Rice Research Institute, Bangladesh

Mohsina Jahan Turon
Department of Agriculture Extension, Ministry of Agriculture, Bangladesh

Mohammad Jahidul Islam
Department of Entomology, Sher-eBangla Agriculture University, Dhaka-1207, Bangladesh

Abstract/ Executive Summary:

With the development of high yielding rice varieties, use of chemical fertilizers increased rapidly in Bangladesh. Depending on chemical fertilizer solely is not wise and maintaining soil health becomes a great concern worldwide. The purpose of the study is to know about the effect of organic and inorganic fertilizer on growth and yield of rice. The experiment was laid out in a split-plot design with four nutrient managements (N₁= BRRI recommended fertilizer dose (N-P-K-S-Z = 117-19-58-15-4 kg ha^-1), N₂= 75% of BRRI recommended dose, N₃= 75% of BRRI recommended dose + Decomposed poultry litter (DPL) (2.5 t ha^-1) and N₄= No fertilizer) in the main plots and three spacing(S₁= 20 cm × 20 cm, S₂= 20 cm × 15 cm and S₃= 25 cm × 15 cm) in the subplots with three replications. In growth and yield characteristics, insignificant difference was found for different spacing but significant difference was found for different nutrient managements. N₁ and N₃ performed better than N₂ and N₄ in all observed characteristics. N₁ and N₃ gave statistically similar result in yield. The result revealed that, with the application of 2.5 t ha^-1 DPL we can reduce 25% chemical fertilizer without yield reduction in rice.

Keywords: Integrated nutrient, Spacing, Yield, Rice

Location: Bangladesh Rice Research Institute (BRRI) farm, Gazipur, Bangladesh

Start Date: 00-00-2016

End Date: 00-00-2017

Program Area: Crop-Soil-Water Management

Commodity: Rice, Nutrition

Objectives:

To identify the Influence of Integrated Nutrient Management and Spacing on Growth and Yield of Rice (Birri Dhan69).

Methodology:

Experimental site: The experiment was conducted in Boro 2016-17 at Bangladesh Rice Research Institute (BRRI) farm, Gazipur. The soil of BRRI farm was clay loam under Madhupur tract (AEZ 28). Plant materials and planting method: Planting crop was BRRI dhan69. Thirty-nine-day-old seedling was transplanted using one seedling per hill on 17th January, 2017. Experimental design and application of manures and fertilizers: The experiment was laid out in split plot design with three replications, the main plot treatments were nutrient management, N₁= BRRI recommended fertilizer dose (N-P-K-S-Z = 117-19-58-15-4 kg ha^-1), N₂= 75% of BRRI recommended dose, N₃= 75% of BRRI recommended dose + Decomposed poultry litter (DPL) (2.5 t ha^-1) and N₄= No fertilizer. The sub plot treatments were spacing, S₁= 20 cm × 20 cm, S₂= 20 cm × 15 cm and S₃= 25 cm × 15 cm. Full doses of PKSZ and poultry litter were applied during final land preparation and N was top dressed at 15, 30 and 45 DAT. Data collection procedure: For tillering pattern, tiller number was counted at twelve hills for each plot which started from 35 DAT and continued up to maturity at 15 days interval. Leaf area index (LAI) was taken at heading stage from one representative hill (selected from average of twelve hills). Plant height was measured from the base of the plant to tip of the panicle. At maturity, 5 m² areas was harvested for grain yield and adjusted to 14% moisture content. Statistical analysis: The data were statistically analyzed using Statistics 10 analytical software. The least significant difference (LSD) at 5% probability was used to compare means of the treatments.

Source of Information: Res. Agric. Livest. Fish. Vol. 7, No. 1, April 2020: 25-32. ISSN : P-2409-0603, E-2409-9325

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Yield sacrifice will not consider by farmers, so integrated nutrient management should be taken as to remain the yield satisfactory. We should concern about soil health for future demand and in this purpose organic fertilizer should be included for rice cultivation. Seventy five percent of BRRI recommended dose of chemical fertilizer + Decomposed poultry litter (2.5 t ha^-1) with 25 cm × 15 cm spacing may be a good option for cultivation of BRRI dhan69. However, multi-location field trials would be required for the verification of the results.

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