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Efficacy of Metslfuron-methyl 20% Wdg in Controlling Weeds in Transplanted Rice

Md. Abdullah Al Mamun
Agronomy Division, BRRI, Gazipur

Rakiba Shultana,
SSO,
Agronomy Division, BRRI, Gazipur

S. A. lslam,
SSO,
Agronomy Division, BRRI, Gazipur

M. K. A. Bhuiyan
SSO,
Agronomy Division, BRRI, Gazipur

M A J Mridha
CSO & Head
Agronomy Division, BRRI, Gazipur

Abstract/ Executive Summary:

Herbicides offer an economic and efficient control of weeds. To evaluate the performance of Metsulfuron-methyl 20% WDG for weed suppression and to find out an appropriate dose of the herbicide, field experiments were conducted at Bangladesh Rice Research Institute (BRRI), Gazipur in Aus, 2010 and BRRI, Rangpur, during Boro, 2011. Metsulfuron-methyl 20% WDG @ 60, 80 and 100g ha^-1 was applied. Pyrazosulfuron ethyl 10% WP @ 725g ha^-1, weed free and unweeded control was the treatment variables. The most dominant weeds were Cyperus diffomis, Monochoria vaginalis and Echinochloa crusgalli. Cyperus diffomis was at the higher rank of dominant in both years. Application of Metsulfuron-methgl 20% WDG @ 80g ha^-1 gave more than 80% weed control efficiency, lower number and dry weight of weeds which ultimately resulted in higher yield attributes and grain yield of transplanted rice.

Keywords: Metsulfuron-melhyl, Weed control, Rice

Location: BRRI Gazipur and Rangpur

Start Date: 01-04-2010

End Date: 15-11-2011

Program Area: Pest Management

Commodity: Chemical weed management

Objectives:

To evaluate the performance of Metsulfuron-methyl 20% WDG for weed suppression and to find out an appropriate dose of the herbicide.

Methodology:

Field experiments were conducted at Bangladesh Rice Research Institute (BRRI), Gazipur in Aus, 2010 and BRRI, Rangpur, during Boro, 2011. The objective was to evaluate the performance of Metsulfuron-methyl 20% WDG for weed suppression and to find out an appropriate dose of the herbicide. Metsulfuron-methyl 20% WDG @ 60, 80 and 100g ha^-1 was applied. Pyrazosulfuron ethyl 10% WP @ 725g ha^-1, weed free and unweeded control was the treatment variables. Visual observation indicates that these herbicides were not toxic to rice plants. The experiment was laid out in a Randomized complete block design (RCBD). Net plot size was 4m x 4m. Fertilizers such as nitrogen, phosphorus and potassium (N, P, and K) and sulphur (S) were applied. The whole phosphorus and potassium and one third of nitrogen were applied at the time of sowing. The remaining doses of nitrogen were applied in two splits at tillering and panicle initiation, respectively. The crop was harvested at maturity. The data were analyzed following analysis of variance (ANOVA) and the statistical program MSTAT-C (Russell, 1986).

Source of Information: Banglades Agron. J. 2012, 15 (1): 17-23

Article Link (Online Journal):

Funding Source:

1. Government

Budget: Thirty thousand taka

Total Budget (Tk.) : Thirty thousand taka

Achievement/Findings:

Metsulfuron-methyl 20% WDG @ 80g ha^-1 controlled weeds effectively and produced optimum satisfactory grain yield in both locations.

Knowledge Management: Journal