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Research Detail

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Dr. AKM Saiful Islam
Principal Scientific Officer
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh.

Dr. MA Rahman
. CSO & Head
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh.

. Md. Tariqul Islam
,. SSO


Md. Imdadur Rahman
SO


Appropriate weed control by mechanical method is urgent need in crop production. BRRI already developed power and mechanical weeder to control the low land weed in rice culture. These machines need thorough investigation in the farmers’ field. This experiment was conducted in the farmers’ field at Rashidpur in Mithapukur upazila under Rangpur district during boro (2015) season. Three treatments i.e. T1 = Hand weeding (HW), T2 = BRRI mechanical weeder (BMW) and T3 = BRRI power weeder (BPW) were used in the experiment. This experiment was carried out in randomized complete block design (RCBD) and replicated in four farmers’ plots. The highest weed control efficiency (78%) obtained with BPW and the lowest (76%) measured in BMW. BPW damaged lowest (9%) plants compared to BMW (11%). The effective field capacities were 0.06 hectare per hour and 0.09 hectare per hour for BMW and BPW, respectively. The lowest labor requirement was 582 man-hr/ha for BPW and the highest was 650 man-hr/ha for HB. Weeding cost showed highest in HW (Tk 4287/ha) followed by BMW (Tk 1103/ha) and BPW (Tk 950/ha). Weed control methods showed insignificant effect on grain yield. Input cost varied due to weed control method. 

  Weeder, Weed control efficiency, Yield, Benefit-cost ratio
  Rangpur
  01-11-2014
  30-06-2015
  Farm Mechanization
  Weeder

·       1.To evaluate the field performance of mechanical and power weeder

·        2.To estimate the yield and yield contributing character

·        3. To compare the cost of mechanical over traditional method of weeding

Experimental location: This experiment was conducted in the farmers’ field, Rashidpur, Mithapukur, Rangpur. Experimental design: The experiment was carried out in randomized complete block design (RCBD) and replicated in five plots. Fifteen farmer’s plots within one kilometer radius were selected to conduct this study. Treatments: Three treatments were designed to conduct the experiments, such as  T1 = Hand weeding (HW) at 25 DAT and 55 DAT;  T2 = BRRI mechanical weeder (BMW) at 25 DAT and T3 = BRRI power weeder (BPW) at 25. Data on labour requirement, field capacity, tillering dynamics, yield and yield contributing characters were taken and analysed using software Statistix 9.0. Least significant difference was used to compare the means. In order to estimate the production cost, the data on working speed, total time and labor involvement and materials inputs to complete the operation were recorded. Rental charge of the machines was also included in the cost estimation. Land rental value and interest on investment were considered to calculate the total input cost. Price of the produce was collected from the local markets to compute total production cost, gross return, gross margin and benefit-cost ratio. 

  FMPHT Divisional Report, BRRI, Gazipur-1701, Bangladesh
  
Funding Source:
1.   Budget:  Tk 14,61,120
2.   Budget:  Tk 14,61,120
   Tk 14,61,120

BPW and BMW showed encouraging weed control efficiency, saved weeding cost without sacrificing grain yield and appeared as environmentally safe weed control technology in low land rice cultivation. Its’ application method is also an important factor contributing to total cost of production.

  Report/Proceedings
  

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