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Research Detail

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MA Hossen
Senior Scientific Officer
FMPHT Division, Bangladesh Rice Research Institute, Gazipur

MA Alam
Scientific Officer,
FMPHT Division, Bangladesh Rice Research Institute, Gazipur

S Paul
Scientific Officer
FMPHT Division, Bangladesh Rice Research Institute, Gazipur

MA Hossain
Senior Scientific Officer,
Workshop Machinery and Maintenance Division, BRRI

A study was conducted to modify and evaluate the Korean power weeder for 20 cm line spacing. Five weeding technologies were used in the study namely KMPW, MMPW, KSPW, BW and HW.  Korean multi-rows power weeder (KMPW) which is suitable for 30 cm line transplanted rice field was modified for 18, 20 and 22 cm line spacing. Modified power weeder was evaluated at BRRI research field, Gazipur and farmer’s field at Kumarkhali, Kushtia in comparison with other weeding technology. Field efficiency was found 69.35, 69.91, 71.69 and 83.78 percent at Gazipur and 62.71, 52.86, 61.88 and 86.34 percent at Kushtia in 1st weeding whereas 71.37, 70.62, 68.38 and 84.98 percent at Gazipur and  72.36, 77.44, 67.09 and 87.17 percent at Kushtia in 2nd weeding for MMPW, KMPW, KSPW and BW respectively. Total operating cost on the basis of fixed and variable cost in terms of Tk/hr for MMPW, KMPW KSPW and BW was found 120.44, 147.41, 151.63 and 38.04 respectively. The cost of operating over traditional method for weeding was found 1711, 1896, 1922 and 2009 Tk/ha for MMPW, KMPW, KSPW and BW respectively over the hand weeding. The modified weeder was found suitable to operate in the line transplanted field with adjustable facility of 18, 20 and 22 cm spacing.

  Weeding technology, Weeding efficiency,Field capacity,Field efficiency, Operating cost
  Bangladesh Rice Research Institute, Gazipur
  22-10-2012
  30-12-2013
  Farm Mechanization
  Performance evaluation
  1. To modify the Korean power weeder
  2. To develop a power weeder suitable for 18, 20 and 22 cm line spacing of transplantation
  3. To compare developed weeder with other weeding technology
  4. Cost-benefit analysis of the weeding technology

Korean power weeder is suitable for 30 cm line spacing of rice field. It was modified for 18, 20 and 22 cm line spacing used in Bangladesh. AutoCAD tools were used to design the weeder. The weeder was fabricated as per design in the research workshop. During design, existing specification of the power weeder was studied. GI pipe, GI sheet, MS sheet, MS flat bar and MS shaft etc workshop materials were used to fabricate the weeder in the workshop. In addition, fuel, funnel, lubricant, rules, stop watch, and measuring tape were used during study. Fabricated weeder was evaluated during Boro/2013 season at BRRI experimental field and Kumarkhali, Kushtia.

 

  Eco-friendly Agri. J. 8(03):2015, 37-46
  
Funding Source:
  

Korean multi-row power weeder was modified for Bangladesh conditions considering the line to line spacing 18, 20 and 22 cm because Korean power weeder is suitable only for mechanical transplanter rice field. Both Korean and modified power weeder was found suitable to control weeds in the line transplanted field. The average field capacity of 1st and 2nd weeding at Gazipur and Kushtia was found more for KMPW compared to others. All weeding technologies were found profitable over the traditional method though single row power weeder was least profitable. Farmers could save 1711, 1896, 192 and 2009 Tk/ha by using KMPW, MMPW, KSPW and BW respectively over the traditional method. 

  Journal
  

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