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Lmprovement of a Low-cost Rice Weeder

M. Ahiduzzaman
Scientific Officer
Bangladesh Rice Research lnstitute, Gazipur

M.S. lslam
Principal Scientific Officer
Bangladesh Rice Research lnstitute, Gazipur

M.A. Hossen
Scientific Officer
Bangladesh Rice Research lnstitute, Gazipur

M.A. Rahman
Senior Scientific Officer
Bangladesh Rice Research lnstitute, Gazipur

M.G.K. Bhuiyan
Director Research
Bangladesh Rice Research lnstitute, Gazipur

M.A. Baqui
Director Research
Bangladesh Rice Research lnstitute, Gazipur

Abstract/ Executive Summary:

Farmers of Jhinaigati, Sherpur have been using an indigenous weeder extensively for lowland rice field. Some prototypes of that indigenous low-cost weeder were collected and tested at BRRI farm, Gazipur. During the test some difficulties were found and further modification was needed. Then the indigenous weeder was modified and tested to the field. The experiments were conducted at BRRI farm for heavy soil and Kapasia for light soil conditions.The weeding capacity of modified weeder (called BRRI KISHAN) at farmers' field was found to be 74.0 decimal/man-day and 75.0 decimal/man-day at heavy and light soil conditions respectively at large plot. BRRI KISHAN weeder showed 90% weeding efficiency. By using BRRIKISHAN weeder Tk.1436.q0/ha could be saved over manual weeding. By using weeder a considerable number of labour requirement per ha as well as production cost could be reduced over manual weeding.

Keywords: Weeder, Weeding capacity, Weeding cost

Location: Bangladesh Rice Research lnstitute, Gazipur

Start Date:

End Date:

Program Area: Farm Mechanization

Commodity: Weeder

Objectives:

i) To improve the indigenous low-cost weeder.

ii) To find out weeding capacity in different soil condition.

iii) To compare the performance with BRRI weeder, indigenous weeder and manual weeding method as well.

Methodology:

The low-cost rice weeder was collected and tested at BRRI farm, Gazipur. The difficulties during weeding operation were observed and field condition also was observed. Based on the difficulties observed during weeding operation, the existing weeder was modified and fabricated in the FMPHT workshop. BRRI-KISHAN weeder, BRRI weeder and indigenous weeder were selected to compare the performances with respect to manual weeding method. The experiment was conducted at BRRI farm (experimental plot and large plot) for heavy soil and Kapasia (large plot) for light soil conditions. Field capacity, weeding efficiency and cost of weeding were analyzed for the performance study. The crop yield was analyzed in the experimental plot. The size of plots were 20 m² and 884 m², respectively. The treatments were as follows with three replications: T₁= BRRI-Kishan weeder, T₂= lndigeneous weeder, T₃= BRRI weeder, T₄= Hand weeding and T₅= Control.

Source of Information: J. Agric. Mach., Bioresour. Eng. 4(1&2), 2006: 75-79 ISSN 1993-4041

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The modified weeder is light in weight (650 gram) and less power required for operation. Labor feels comfort to work with this weeder. The modified weeder even can be used in both with and without line transplanting field. lt can perform better and economically viable compared to indigenous weeder. About 1300 Taka/ha could be saved using the weeder at reduced labor requirement. The weeding efficiency BRRI-KISHAN weeder was found to be 90%.

Knowledge Management: Journal