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Evaluation of Boro-fallow-t. Aman Cropping Pattern in the Saline Area

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

Dr Md Harunur Rashid
Senior Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

Tahmid H Ansari
Principal Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur

Akhter Hossain Khan
Chief Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

Abstract/ Executive Summary:

The experiment was conducted during T. Aman-2009 and Boro 2009-10 season at Dacope, Khulna. Objective of this study was to evaluate the productivity of Boro-Fallow-T. Aman cropping pattern in saline area. The result indicates that in Boro-Fallow-T. Aman cropping pattern, the grain yield of BR23 was higher than other three varieties of BRRI dhan40, BRRI dhan41 and BRRI dhan46. The highest yield advantage was found in BR23 compared to BRRI dhan46. The gross return of BRRI dhan40 and BRRI dhan41 was 44% and 38% higher than BRRI dhan46, respectively. In Boro season, BRRI dhan47 yielded highest where salinity was less than 4 dS/m throughout the year. Inspite of having salinity problem, due to Boro rice grown at least 33.62% higher gross return can be obtained in Boro-Fallow-T. Aman cropping pattern compared to Fallow-Fallow-T. Aman cropping pattern.

Keywords: Productivity evaluation, Cropping pattern, Saline area

Location: BRRI farm, Gazipur

Start Date: 01-07-2009

End Date: 30-06-2010

Program Area: Farming System

Non-commodity: Rice, Cropping pattern

Objectives:

To evaluate the productivity of Boro-Fallow-T. Aman cropping pattern in saline area

Methodology:

The experiment was conducted during T. Aman-2009 and Boro 2009-10 season at Dacope, Khulna. In this experiment four T. Aman and a Boro variety were tested in a Boro-Fallow-T.Aman cropping pattern. The design of the experiment was RCB with six dispersed replications. In Aman season, the varieties were BR23 (150 days), BRRI dhan40 (145 days), BRRI dhan41 (148 days) and BRRI dhan46 (124 days) in Boro season, the variety was BRRI dhan47. T. Aman varieties were sown between 31 July to 02 August on the seed bed of six farmers. Those varieties were transplanted between 30 August to 05 September 2009. In Boro season, BRRI dhan47 was sown between 30 November to 03 December and transplanted between 03 January to 26 January 2010. Management practices was done as per BRRI recommendation.

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 Boro-Fallow-T. Aman cropping pattern, the grain yield of BR23 was 0.07 to 1.01 t/ha higher than other three varieties of BRRI dhan40, BRRI dhan41 and BRRI dhan46 which resulted 3-47% higher gross returns. The highest yield advantage (47%) was found in BR23 compared to BRRI dhan46. The gross return of BRRI dhan40 and BRRI dhan41 was 44% and 38% higher than BRRI dhan46, respectively. In Boro season, BRRI dhan47 highest yielded 5.2 t/ha where salinity was less than 4 dS/m throughout the year. The lowest yield was 1.48 t/ha due to failure of salinity management. In one farmers field rice plant died at vegetative and flowering stages with unfilled spikelets due to high salinity where salinity level was 8.4 dS/m on 24 February, 2010. Inspite of having salinity problem, if Boro rice can be grown at least 33.62% higher gross return can be obtained in Boro-Fallow-T. Aman cropping pattern compared to Fallow-Fallow-T. Aman cropping pattern.

Knowledge Management: Report/Proceedings