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Evaluation of Crop Management Options for Narrowing the Yield Gap in Boro and T. Aman Rice

Mahbubur Rahman Dewan
Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

Satyen Mondal, Shila Pramanik
Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

Shila Pramanik
Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

Abstract/ Executive Summary:

In a yield gap experiment at Kapasia it was found that the BRRI management practice, use of quality seed, LCC and USG contributed to higher yield. In T. Aman season, BRRI recommended management and recommended management + LCC practices produced significantly higher grain yield which was about 19 % higher than the farmers’ practice (4.31 t/ha). The result of the study revealed that yield advantage of about 15% could be attained by using recommended management + USG practice while this was 8, 7 and 3% higher than FP (farmer’s practice) when only quality seeds, USG and LCC were used with farmers’ management practice. In Boro season, yield and yield contributing characters were significantly affected by different management options. BRRI recommended management and recommended management + LCC practices produced significantly higher grain yield which was about 24 and 23 % higher than the farmers management practices (4.29/ha).

Keywords: Yield gap, USG, LCC, Quality seed, Aman and Boro season

Location: Kapasia, Gazipur

Start Date: 01-07-2009

End Date: 30-06-2010

Program Area: Farming System

Non-commodity: Rice, Management

Objectives:

To determine the contribution of different crop production factors in narrowing the yield gap at farm level and to create farmers’ awareness in adopting recommended management practice for rice production.

Methodology:

The study was conducted at BRRI technology site, Moison, Kapasia, Gazipur in six and five dispersed farmers’ fields during T. Aman 2009 and Boro 2009-10, respectively. Each farmer’s field was considered as one replication. Seven management options: i) Farmer’s practice (FP), ii) FP + quality seed (QS), iii) FP + LCC, iv) FP + USG v) Recommended management + USG, vi) Recommended management + LCC and vii) BRRI recommended management practices were evaluated in each dispersed farmer’s field in each season. Under recommended practice, fertilizer rate for T. Aman and Boro season were 100, 10, 40, 10, 2 and 140, 15, 40, 10, 3 kg N, P, K, S, Zn/ha, respectively while these were 94-106, 7-10 ,20-35, 8-9, 0 and 135-150, 9-11, 20-33, 0, 0 kg N, P, K, S, Zn/ha for farmers’ management practice.

Source of Information: Proceedings of BRRI Annual Internal Review for 2009-2010

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In T. Aman season, yield and yield contributing characters were significantly affected by different management options. BRRI recommended management and recommended management + LCC practices produced significantly higher grain yield which was about 19% higher than the farmers’ practice (4.31 t/ha). The result of the study revealed that yield advantage of about 15% could be attained by using recommended management + USG practice while this was 8, 7 and 3% higher than FP (farmer’s practice) when only quality seeds, USG and LCC were used with farmers’ management practice. The results of Boro showed that yield and yield contributing characters were significantly affected by different management options. BRRI recommended management and recommended management + LCC practices produced significantly higher grain yield which was about 24 and 23% higher than the farmers management practices (4.29/ha). The results of the study also implies that a yield advantage of 15% could be attained by recommended management + USG practice while this was 12, 8 and 13% higher than FP (farmer’s practice) when only quality seeds, USG and LCC were used with farmers’ management practice.

Knowledge Management: Report/Proceedings