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Evaluation of Sesbania Application and Weed Management Practices in T. Aman Under Boro-fallow-t. Aman Cropping Pattern

A. B. M. Jamiul Islam
Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

MD. KHAIRUL QUAIS
Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

NARGIS PARVIN
Scientific Officer
Rice Farming Systems Division, Bangladesh Rice Research Institute, Gazipur

Abstract/ Executive Summary:

Sesbania application and weed management in T Aman rice in Boro-Fallow-T. Aman cropping pattern indicated that Sesbania incorporation before T Aman rice significantly influenced yield and yield contributing characters. Sesbania incorporation by applying herbicide 30 days after seeding (S₂) gave the highest yield (6.15 t/ha).

Keywords: Sesbania, Weed management, Yield

Location: BRRI, Gazipur

Start Date: 01-07-2011

End Date: 30-06-2012

Program Area: Farming System

Commodity: Manures

Objectives:

To identify suitable weed management practices under Sesbania application in T. Aman under Boro-Fallow-T. Aman cropping pattern

Methodology:

The experiment was conducted during Aman season, 2011 at West-byde of BRRI. BRRI dhan49 was used in T. Aman season, where Sesbania was incorporated with two different dates (30 DAS and 40 DAS) and methods (Herbicide application and ploughing). The treatments were 30 day old Sesbania applied with herbicide application (S₁), 40 day old Sesbania applied with herbicide application (S₂) and 40 day old Sesbania applied through ploughing (S₃) and no Sesbania (S₀). On the other hand, weeding was done in different times after transplanting. Hand weeding at 15, 30 and 45 DAT (W₁), at 30 and 45 DAT (W₂), at 45 DAT (W₃) and no weeding (W₄) were executed in the experiment to evaluate the effect of Sesbania on weed suppression. In Boro season, BRRI dhan29 was used as blank crop. The experiment was laid out in RCB design with three replications.

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:

Interaction effect of Sesbania incorporation on weeding method was significant. Highest yield (6.15 t/ha) was obtained from S₂W₁(Sesbania incorporation by applying herbicide 30 days after seeding with hand weeding at 15, 30 and 45 DAT) which was similar to S₃W₁(Sesbania incorporation by applying herbicide 40 days after seeding with hand weeding at 15, 30 and 45 DAT). And lowest yield (3.25t/ha) was found from S₃W₄ (Sesbania incorporation by applying herbicide 40 days after seeding with no weeding) which was similar to S₂W₄ (Sesbania incorporation by applying herbicide 30 days after seeding with no weeding) and S₄W₄ (Sesbania incorporation by ploughing 40 days after seeding with no weeding).In Boro season BRRI dhan29 was transplanted 20 January’2011 and harvested at 12 May’11.The grain yield was found 6.68 t/ha.

Knowledge Management: Report/Proceedings