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Effect of Weed Control Option for Yield Maximization of BRRI Dhan57 in Draught Condition at Rangpur Region in T. Aman Season

Md. Abu Bakar Siddique Sarker
Principal Scientific Officer
Agronomy Division, BRRI, Gazipur-1701

Dr. M A J Mridha
CSO
Agronomy Division, BRRI, Gazipur-1701

Abstract/ Executive Summary:

Grain yield at Pirgasa, Rangpur of BRRI dhan57 was significantly affected by different treatments during T Aman 2013 season. The highest grain yield was observed from treatment T₁ (3.64 t ha^-1) followed by T3 (3.40 t ha^-1) than T₄ (3.39 t ha^-1). The Lowest Grain yield was obtained from treatment T₅ (2.95 t ha^-1) than T₆ (3.19 t ha^-1). Similar result was obtain at Kaliganj, Lalmonirhat and the highest grain yield was observed from treatment T₁ (3.79 t ha^-1) followed by T₂ (3.76 t ha^-1) than T₃ (3.69 t ha^-1). The Lowest Grain yield was obtained from treatment T₅ (3.18 t ha^-1) than T₆ (3.29 t ha^-1). It also observed at Sayedpur, Nilphamari that Grain yield of BRRI dhan57 was significantly affected by different treatments during T Aman 2013 season. The highest grain yield was observed from treatment T₁ (4.19 t ha^-1) followed by T₄ (4.01 t ha^-1) than T₃ (3.67 t ha^-1). The Lowest Grain yield was obtained from treatment T₅ (3.08 t ha^-1) than T₆ (3.19 t ha^-1).

Keywords: BRRI dhan57, Drought, Pre emargence, Post emargence, Rice

Location: Kaliganj of Lalmonirhat, Pirgasa of Rangpur and Sayedpur of Nilphamari

Start Date: 01-05-2013

End Date: 31-12-2013

Program Area: Pest Management

Commodity: Weed management

Objectives:

Methodology:

Total three field experiments were conducted at farmer’s field at Pirgasa of Rangpur, Kaliganj of Lalmonirhat and Sayedpur of Nilphamari to identify and recommend appropriate weed management option for BRRI dhan57 under draught condition for yield maximization for sustainable rice production during T. Aman season. Total six treatments were tested under the experiments. The treatments were T₁ = Pre emergence herbicide + one hand weeding, T₂ = Post emergence herbicide + one hand weeding, T₃ = Pre emergence herbicide + Post emergence herbicide, T₄ = Three hand weeding at 15 DAT, 30 DAT and 45 DAT, T₅ = No weeding and T₆ = Farmer’s practice. The experiment was laid down in RCB design with three replications. The tested variety was BRRI dhan57. Plot size was 4 x 6 m. Transplanting was done by two seedlings per hill and the seedling age was 25 days old. All fertilizers were applied as basal before transplanting except N.

Source of Information: Proceedings of BRRI Annual Internal Review for 2013-2014

Article Link (Online Journal):

Funding Source:

1.	Budget: 100000.00

Total Budget (Tk.) : 100000.00

Achievement/Findings:

Based on these results it may be concluded that to control weed efficiently at Rangpur drought prone area during T Aman season, Pre-emergence herbicide + one hand weeding or Post-emergence herbicide + one hand weeding or Pre emergence herbicide + Post emergence herbicide or three hand weeding may perform higher grain yield by BRRI dhan56. Farmers may achieve more than one tone ha^-1 additional rice yield from their existing weed control practice. Farmer may adopt any one depending upon cost effectiveness.

Knowledge Management: Report/Proceedings