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

Satyan Mandal
Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

Dr. Md. Abdul Muttaleb
Senior Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

Dr. Md. Hazrat Ali
Chief Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

Abstract/ Executive Summary:

Boro rice grown in costal saline area using fresh reserve water gave at least 33.70% higher gross return in Boro-Fallow-T Aman cropping pattern compared to Fallow-Fallow-T Aman cropping pattern.

Keywords: Saline area, Cropping pattern, Yield

Location: Dacope,Khulna

Start Date: 01-07-2011

End Date: 30-06-2012

Program Area: Farming System

Non-commodity: 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 2011 season at Dacope, Khulna. In this experiment four modern T Aman (HYV) and two local varieties were tested in Boro-Fallow-T Aman cropping pattern. The design of the experiment was RCB with six dispersed replications. In Aman season, the varieties were BR23, BRRI dhan40, BRRI dhan41, BRRI dhan44, Sadamota and Nonakharchi. T Aman varieties were sown between 15-31 July on the seed bed of six farmers. Those varieties were transplanted between 03-13 September 2011. In Boro season BRRI dhan47 was sown during12-15 December and transplanted within 21-26 January 2012. Management practices were done as per BRRI recommendation.

Source of Information: Proceedings of BRRI Annual Internal Review for 2011-12

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 BRRI dhan44 was 0.48 to 2.3 t/ha higher than other varieties resulted 10-32% higher gross returns. The highest yield advantage (32%) was found in BRRI dhan44 compared to local varieties. The gross return of BR23, BRRI dhan40 and BRRI dhan41 was 24, 12 and 17% higher than local varieties, respectively. In Boro season, BRRI dhan47 highest yielded 5.29 t/ha where salinity was less than 3 dS/m (0.54-2.93 dS/m) throughout the year. The lowest yield was 2.64 t/ha due to intrusion of saline water from pashur river breaking embankment. However, in spite of having salinity problem, if Boro rice can be grown at least 33.70% 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