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

Md. Nazrul Islam
Scientific Officer
Soil Science Division, BRRI Gazipur

Aminul Islam
Principal Scientific Officer
Soil Science Division, BRRI Gazipur

Md. Rafiqul Islam
Principal Scientific Officer
Soil Science Division, BRRI Barisal

Abstract/ Executive Summary:

The experiment was initiated in a permanent layout at BRRI farm Barisal in Boro 2009 to identify the existence of limiting nutrient(s) in soil for its correction. A number of six treatments viz. NPKSZn, -N, -P, -K, -S and –Zn were in the permanent layout of this experiment. In the year 2013-14, BRRI dhan49 and BRRI dhan29 were grown in T. Aman and Boro season, respectively. The study result proved that N is the most limiting nutrient in Barisal farm. In T. Aman season grain yield reduced about 1 ton/ha while, in Boro season it reduced about 3. 0 ton/ha due to omission of N. Omission of P also reduced rice yield significantly in T. Aman season. There was statistically similar yield reduction observed due to omission of S and Zn from complete treatment in both T. Aman and Boro season.

Keywords: Missing element technique, Barisal, Rice

Location: BRRI farm, Barisal

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 Barisal for its correction

Methodology:

The experiments was initiated in a permanent layout at BRRI farm Barisal in Boro 2009, in RCB design with 3 replications. The treatments were, NPKSZn, -N, -P, -K, -S and –Zn. BRRI dhan29 and BRRI dhan41 was cultivated in Boro and T. Aman season, respectively. Fertilizer rate was NPKSZn @ 150-15-50-10-1 kg/ha for Boro and 60-15-50-10-1 kg/ha for T. Aman. 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 any nutrient element from complete fertilizer treatment (NPKSZn) decreased grain yield of BRRI dhan41. Similarly, in Boro 2013-14, grain yield of BRRI dhan29 was also reduced due to omission of nutrient from complete treatment. In both seasons, omission of N from complete treatment sharply decreased grain yield in Barisal site. In T. Aman season, P omission also reduced rice yield significantly.

Knowledge Management: Report/Proceedings