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Maximizing the Productivity of Late T.aman-based Cropping Patterns Through Adoption of BRRI Dhan46

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

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

Md Khairul Quais
Senior Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

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

Abstract/ Executive Summary:

Results revealed that cultivation of BRRI dhan46 after Boro rice produced the grain yield of 3.32 to 4.37 t ha-1 at Bibadia under Kapasia upazila and Maizbari under Gafargaon. The replacement of local T.Aman varieties (Nizersail, Tilkapur, Furabdi) by BRRI Dhan46 in Boro-Fallow-late planted T.Aman cropping pattern increased the grain yield in all locations. In Boro-T.Aus-T.Aman cropping pattern, BRRI dhan46 yielded 3.68 - 4.51 t ha-1 that was comparatively higher for all sites than local varieties.

Keywords: Productivity maximization, Late T. Aman, BRRI dhan46

Location: Gazipur and Mymensingh

Start Date: 01-07-2010

End Date: 30-06-2011

Program Area: Farming System

Non-commodity: Rice, Performance

Objectives:

To intensify and maximize the productivity of Boro-Fallow-Fallow cropping pattern in medium highland-2 and medium lowland.
To maximize the productivity of Boro-Fallow-T.Aman and Boro-T.Aus-T.Aman cropping patterns.
To promote rapid scaling out of improved cropping patterns.

Methodology:

Nine blocks/villages were selected by the joint effort of researcher and extension providers in Mymensingh Sadar and Gafargaon upazilas of Mymensingh and Kapasia upazila of Gazipur districts three from each Upazila. The selected blocks were Bahadurpur, CharKharicha and Dapunia in Mymensingh Sadar, Uthuri, Maizbari and Dakkinpara in Gafargaon and Bibadia, Saliatiki and Anjab in Kapasia Upazila. BRRI dhan46 is being demonstrated in three cropping patterns of Boro-Fallow-Fallow, Boro-Fallow-T.Aman and Boro-T.Aus-T.Aman cropping patterns in three locations each in ten farmers plots in a village along with existing cropping patterns to show the technological advantage of cropping patterns during 2009-10. The researcher oriented the selected farmers and concerned extension providers at block level with the technological package of selected cropping patterns. The advantages of the technology discussed at least to the double number of farmers from the same villages and same number from the nearby blocks or villages through field day and farmers’ motivational tour during the maturity stage of T.Aman crop. The quality seeds of truthful level produced in the demonstration plots were exchanged or sold to the interested farmers for further dissemination. Moreover, 2 kg of quality seeds of BRRI dhan46 were collected from each demo farmers and distributed by the SAAO to the neighboring interested farmers. Data on crop management practices followed in different cropping patterns and their productivity and adoption rate of BRRI dhan46 were collected and recorded through the joint effort of BRRI and DAE.

Source of Information: Proceedings of BRRI Annual Internal Review for 2010-2011

Article Link (Online Journal):

Funding Source:

1. Government	Budget:
2. Bangladesh Agricultural Research Council	Budget:

Total Budget (Tk.) :

Achievement/Findings:

In the periphery of medium lowland up to 110 cm inundation, the trained farmers tried to grow the variety BRRI dhan46 after recession of monsoon water during Aman season with a view to intensify the land type from single Boro to double rice. Out of three blocks, all the trained farmers could grow BRRI dhan46 after Boro rice at Dakkinnapara, whereas 70-80% farmers were able at Charkharicha and Anjab blocks. Grain yield of BRRI dhan46 ranged from 4.15 to 4.28 t ha-1 in different blocks. The inclusion of BRRI dhan46 in Boro-Fallow-Fallow cropping pattern medium in medium lowland (MLL) increased the system productivity 42-60%. Results revealed that cultivation of BRRI dhan46 after Boro rice produced the grain yield of 3.32 to 4.37 t ha-1 at Bibadia under Kapasia upazila and Maizbari under Gafargaon. The replacement of local T.Aman varieties (Nizersail, Tilkapur, Furabdi) by BRRI Dhan46 in Boro-Fallow-late planted T.Aman cropping pattern increased the grain yield in all locations. In Boro-T.Aus-T.Aman cropping pattern, BRRI dhan46 yielded 3.68 - 4.51 t ha-1 that was comparatively higher for all sites than local varieties. A total of 92 farmers were oriented with the improved package of late planted T.Aman based cropping pattern through training. More than three times of farmers were presented in the field day and motivational tour programme where they had learnt the benefit and the technology package. Farmers are benefited from higher productivity of improved cropping patterns and could produce quality seeds at their level and distributed among the farmers of their own and neighbouring villages.

Knowledge Management: Report/Proceedings