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Long-term Missing Element Trial at BRRI Regional Station Rangpur in the Year 2013-2014

Md. Imran Ullah Sarkar
Scientific Officer
Bangladesh Rice Research Institute, BRRI Gazipur

Md. Gous Ali
Principal Scientific Officer
Bangladesh Rice Research Institute, BRRI Gazipur

Abstract/ Executive Summary:

The experiment was initiated in a permanent layout at BRRI farm Rangpur in T. Aman 2010 to identify the existence of limiting nutrient(s) in soil for its correction. A number of six treatments as NPKSZn, -N, -P, -K, -S and –Zn were in the permanent layout of this experiment. In the year 2013-14, BRRI dhan49 and BRRI dhan50 was grown in T. Aman and Boro season, respectively. In T. Aman 2013, omission of N and Zn fertilizer significantly reduced rice grain yield of BRRI dhan49. The higher grain yield obtained at complete, -K and –S treatment which were not statistically different. Most limiting nutrient was N that reduced grain yield by 2.06 t/ha in T. Aman season, however in Boro season it reduced about 4 ton/ha compared to complete treatment. Omission of other nutrient elements had no significant effect on grain yield reduction. In Boro 2013-14, omission of N, S and Zn significantly reduced rice yield of BRRI dhan50. The higher yield obtained in complete, -P and -S treatment which were not statistically different. In general N is the most limiting nutrient in Rangpur for rice cultivation.

Keywords: Missing element technique, Rangpur, BRRI dhan49, BRRI dhan50

Location: BRRI farm, Rangpur

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To identify the existence of limiting nutrient(s) in soil of Rangpur for its correction

Methodology:

The experiment was initiated in a permanent layout at BRRI farm Rangpur in T. Aman 2010, in RCB design with 3 replications. The treatments were, NPKSZn, -N, -P, -K, -S and –Zn. BRRI dhan49 was cultivated in T. Aman season and BRRI dhan50 in Boro season. Fertilizer doses were 97-7-39-15-0.3 kg/ha and 145-10-57-15-0.6 kg/ha in T. Aman and Boro seasons, respectively. Urea-N was applied in three 3 equal splits at final land preparation, at active tillering stage and at 5-7 days before PI stage. Rest of the fertilizers was applied at final land preparation. Grain yield was recorded from 5 m² areas at the center part of each plot and 16 hills were collected for straw yield. The grain yield was recorded at 14% moisture content and straw yield as oven dry basis.

Source of Information: Proceedings of the BRRI Annual Internal Review, 2013-2014

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In T. Aman 2013, omission of N and Zn fertilizer significantly reduced rice grain yield of BRRI dhan49. The higher grain yield obtained at complete, -K and –S treatment which were not statistically different. Most limiting nutrient was N that reduced grain yield by 2.06 t/ha in T. Aman season however in Boro season it reduced about 4 ton/ha compared to complete treatment. Omission of other nutrient elements had no significant effect on grain yield reduction. In Boro 2013-14, omission of N, S and Zn significantly reduced rice yield of BRRI dhan50. The higher yield obtained in complete, -P and -S treatment which were not statistically different. In general N is the most limiting nutrient in Rangpur for rice cultivation.

Knowledge Management: Report/Proceedings