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Development & evaluation of gender friendly rotary paddy weeder

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Development & evaluation of gender friendly rotary paddy weeder

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Development & evaluation of gender friendly rotary paddy weeder

  1. 1. Development & Evaluation of Gender Friendly Rotary Paddy Weeder AJAY VERMA Principal Scientist & Principal Investigator- NAE 12 August , 2014 Department of Farm Machinery and Power Engineering, Faculty of Agricultural Engineering, Indira Gandhi Agricultural University, Raipur
  2. 2. Key is the healthy crop establishment
  3. 3. Four main components • Soil fertility management – FYM application • Planting method - transplanting young seedlings (8 to 12 days old) along with seed and soil clump - transplanting at wider spacing (25 X 25 cm) • Weed control – regular weeding • Water (irrigation) management - keep soil wet without flooding
  4. 4. Quality and Energy Assessment of Puddling Method used for Wetland Rice Cultivation Different puddling implements in field operation
  5. 5. • The highest increase in bulk density and lowest percolation rate were found with the tractor with rotavator. • Percolation of water was reduced with rotary tilling implement. • The total time required for preparation of puddle fields was lowest when a tractor with cultivator was used.
  6. 6. Types of Markers
  7. 7. Manual random rice transplanting Manual row rice transplanting by rice transplanting frame
  8. 8. Bamboo marker
  9. 9. Incorporating green manure crop with bullock drawn disc harrow
  10. 10. Transplantation
  11. 11. Marking 25 x 25 cm grid in puddled field with three row marker
  12. 12. Lifting and transportation of seedlings to the field in metal sheets
  13. 13. Careful transplanting of 14 days old seedling at 25 x 25 cm grid singly
  14. 14. Manual random rice transplanting Manual row rice transplanting by rice transplanting frame
  15. 15. Incorporating green manure crop with bullock drawn disc harrow
  16. 16. Transplantation
  17. 17. Marking 25 x 25 cm grid in puddled field with three row marker
  18. 18. Lifting and transportation of seedlings to the field in metal sheets
  19. 19. Careful transplanting of 14 days old seedling at 25 x 25 cm grid singly
  20. 20. View of Field After Transplanting
  21. 21. Development of Gender Friendly Paddy Weeder Force limits for standing posture  Maximum push - 25 kgf  Maximum pull - 20 kgf  Female worker can exert comfortably only 70% of the maximum pushing or pulling force exert by a male.  For better muscular efficiency, the dynamic effort of a repetitive nature should not be exceed 30% of the maximum pulling and pushing force.  Design a paddy weeder such that the operator does not have to exert more than 5.25 kgf pushing or 4.5 kgf pulling force. Anthropometric data of female farmer  Weight (kg) - 43.6 kg  Stature - 145.8 cm  Forward arm reach length - 51.1 cm
  22. 22. Length of stroke – 50cm Frequency of movement of weeder – 30 Design of handle
  23. 23. 1. Float 2. Rotor blade 3. Bush 4. Handle connecting bracket 5. Handle height adjusting lever 6. Rotor shaft 7. Main Frame
  24. 24. Paddy Weeder in Operation
  25. 25. Paddy weeder in operation & Training
  26. 26. View of Crop Standing in SRI
  27. 27. Gender Friendly Paddy Weeder Particular Gender Friendly Paddy Weeder Overall Length, mm 1520 Overall width, mm 500 Overall height, mm 950 Width of cut, mm 120 Actual field capacity, ha/h 0.0136 Field efficiency, % 82 Operational Cost, Rs/ha 956
  28. 28. Weeding Advantages in SRI • Enhances the utilization of biomass • Facilitates proper aeration in the soil • Promotes healthy growth of the root system • Provides earthling up effect facilitating plants to produce new roots which help additional nutrients uptake
  29. 29. Manufacturing process of Jigs & Fixtures For Gender-Friendly Paddy Weeder Material Marking Cutting Size Marking Punching Drilling Heat Treatment Welding Painting Ready for Market  The jigs and fixtures to reduce time and material cost were developed at FAE, Workshop.  The perfect jigs and fixtures can work repeatability and interchangeability to produce the same parts in production.  Once the final prototype of the jig was ready, it was thoroughly evaluated for the final design objective i.e.  Reducing the time involved in various operations  Accuracy in operations  Reduction in wastage of material and  Performance in the actual work conditions
  30. 30. Jigs and Fixtures already used for development of Paddy Weeder Jigs and Fixtures developed for development of Paddy Weeder Welding Fixture M S rod bending fixture  The Jigs used for bending of MS Flat. The flat bending by the hand power, takes time and also produce drudgery to worker.  After working for 15 minutes (Approx 15 plates), Work rest for 5 minutes. Teeth Cutting Die Fixture for Bending MS Plate Fixture for Bending MS Plate
  31. 31. Bending fixture float Bending fixture MS plate Bending fixture MS plate Operation Avg. Time consumed (minutes) Traditional jigs Improved Jigs Fabrication of individual paddy weeder without using jigs and fixtures Total time taken 15 min. Total time taken 10 min. Cutting Fixture 5mm MS plate, 16 inch x1 , 8 inch x 2, 4 inch x 3, 5 inch x1 90 sec. 60 sec. Cutting Fixture Float 40 sec. 12 sec. Bending fixture 20 sec 60 sec. Drill Mark Fixture (14 drill/ work- piece) 60 sec 15 sec. Welding Fixture (temporary + Permanent) 70+ 150 sec 60 sec. Marking before cutting 120 sec 180 sec. Teeth cutting (marking + cutting) 180 sec 10 sec. Pipe cutting 30 sec 30 sec. Pipe drilling 30 sec 30 sec. Nut and bolt tightening 30 sec 30 sec. Heat treatment 60 sec 60 sec Total Time Taken 9.45 min Improved Jigs and Fixtures Time calculation with traditional and Improved Jigs Benefits: Better alignment, interchangeability & lower production cost in comparison to fabrication without use of Jigs and Fixtures
  32. 32. Comparison of manufacturing time required for development of paddy weeder with traditional & improved jigs and fixture
  33. 33. Manufacturing process of teeths of Paddy Weeder
  34. 34. Cono weeder in operation Gender friendly paddy weeder in operation
  35. 35. Cono Weeder and Gender Friendly Paddy Weeder
  36. 36. Gender Friendly Weeder in Operation
  37. 37. Fig. 5 Stress stablization for gender friendly paddy weeder 50 60 70 80 90 100 110 120 130 0 2 4 6 8 10 12 14 16 18 20 Time (min) Heartrate(Beats/min) Transplanted Row seeded
  38. 38. Observation Subjects Average S1 S2 S3 S4 1. Depth of operation (mm) 25 28 28 25 26.5 2. Width of operation (mm) 120 120 120 120 120 3. Height of crop (mm) 262 262 262 262 262 4. Weed population (weeds/m2) (a) Before test 356 320 328 392 349 (b) After test 68 71 46 69 64 5. Weeding efficiency (%) 81 78 86 82 82 6. Plant damaged Nil Nil Nil Nil Nil 7. Field capacity (ha/h) 0.0146 0.0134 0.0127 0.0137 0.0136 8. Field capacity (h/ha) 68.5 74.6 78.8 73 73.7 9. Working efficiency of human operator (%) 62 63 60 62 62
  39. 39. Large Scale Production of Gender Friendly Paddy Weeder
  40. 40. Design and Development of Manually-Operated Check Row Planter for Dry Seeding of Rice Brief Description of Machine  This is a type of row-crop planter which enables operator to perform hill planting at definite spacing (in checks or squares). This facilitates mechanical weed control and other operations.  Separate seed hopper was provided in planter for each row.  Seed hopper bottoms for row crops have rotating agitator feeding mechanism that was rotate in small circular pipe. It have small opening for passing the seeds.  A small cell is attached below the every hopper where seeds were drop at desired intervals.  The full hill drop receives in the cell 2 or 3 seeds at a time.  After receiving the seeds, the cell open and closed under a cut off mechanism.  Seeds usually drop on a ’valve’ and wait until the valve is tripped like a trap door to drop the seed into the furrow or hill. Most planters can be set to plant 2 to 3 seeds per hill.  A wide range of spacing can be obtained by using metering roller and star wheel which is fixed on side of the hopper and rotate with the help of metering shaft.  This star wheel performs the cut-off of seed by adjusting the numbers of blade on star wheel to maintain the cut off operation by which plant to plant distance is maintained.
  41. 41. Particulars Depth of sowing Average Row1 (cm) Row 2 (cm) Mean 2.42 2.4 2.41 SD 0.867 0.869 0.868 Range 2.3 – 3.2 2.2 – 3.3 2.25 – 3.25 CV 35.82 36.20 36.00 Particulars Seed distance, cm Average Field 1 Field 2 Field 3 Mean 26.3 27.78 26.31 26.79 SD 4.90 6.32 5.75 5.65 CV% 18.63 27.75 21.85 22.74 Missing hill 1 2 1 1.33 Missing index % 5 10 5 6.66 Uniformity of placement of seed Distance between seeds and Missing hill. Particulars Seed drop/hill Average R1 R2 R3 Total hill drop 20 20 20 20 No. of Multiple hill 3 2 3 2.66 Multiple index % 15 10 15 13.33 Multiple Index Field No. Speed, (km/h) TFC, (ha/h) AFC (ha/h) ηe% Time req., h/ha seed rate, kg/ha A. 1.04 0.050 0.024 47.66 41.66 9.40 B. 0.98 0.048 0.023 47.40 43.47 10.12 C. 0.94 0.046 0.022 47.10 45.45 10.75 Avg. 0.97 0.048 0.023 47.38 43.52 10.09 Test result of Check row paddy planter
  42. 42. Method of planting EFC, (ha/h) Time req. (h/ha) Man- days required/ha Cost/ha Check row paddy planter 0.023 43.47 5.44 653 Transplanting manually in SRI 0.0065 153.84 19.23 2307 Dry seeding manually 0.0054 185.18 23.14 2777 S. No. Method of paddy sowing Energy consumption MJ/ha 1. Dry seeding by Check row planter 97.65 2. Transplanting of nursery in SRI 301.52 3. Dry seeding paddy seeds by manually 362.83 Energy consumption for different method of paddy sowing. Comparison of different method of planting of paddy S No Particulars Amount 1 Cost of machine, Rs. 2370.00 2 Life of the machine (y) 10.00 3 Annual use (h) 240.00 5 Depreciation, Rs. 213.3 6 Interest, Rs. 182.49 Sum of (5 & 6) Fixed cost (Rs/Year) annul use is 240 h 396.19 A Fixed cost (Rs./h) 1.65 B Operational 1. Wage of 1 operator (Rs. 120/day*), Rs./h 15.00 C Variable cost 1. Repair and maintenance, Rs/h 0.987 Total of (A+B +C) Machinery cost, (Rs./h) 17.63 Cost of operation, Rs. /ha 767 Saving over manually transplanting, Rs./ha 1540 Saving over manual transplanting percentage 66.75 Saving over dry seeding manually, Rs/ha 2010 Saving over dry seeding manually, percentage 72.38 Calculation of cost work with Check row paddy planter

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