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Advantages of Drip Irrigation

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					      Table 5.1: Yield Increases and Water Savings from Drip Irrigtion in India

              Crop           % Increase in Yield (Drip over                % Water Saving
                                  Surface Irrigation)
      Eggplant                            18                                        44
      Cabbage                             34                                        46
      Cauliflower                         44                                        20
      Chilli                              10                                        68
      Okra                                27                                        15
      Potato                              20                                        40
      Tomato                              25                                        40
      Pomegranate                         21                                        51
      Cotton                           40 to 47                                  5 to 33
      Simple average                     27%                                      38%

     Source: Progress Report 201, National Committee on Plasticulture Applications, MOA, India



     Table 5.2: Increased Yields and Water Savings with Drip Irrigation in India

                     Crop               % Increase in Yield         % Water Increase in
                                                                         Saving
             Grapes                              23                         48
             Pomegranates                        98                         45
             Tomatoes                            50                         39
             Watermelon                          88                         36
             Cotton                              27                         53

             Source: “Success of Drip in India: An Example to the Third World” by S.K. Suryawanshi



               Table 5.3: Water Conservation in Mediterranean Countries

         Country               Jordan        Morocco              Turkey          Egypt          Tunisia
Type of irrigation               Drip      Laser-leveled       Drip, sprinkler   Modernise  Drip, sprinkler
                                           basin irrigation    and California      d lined and modernised
                                                                  system           mesq    surface irrigation
Reported water savings      20 to 50       20                 34                 -         25
(%)
Reported crop yield         15% to 20%     30%                -                  10%         -
increase (%)                (Cucumber,     (Cereals)                             (cereals,
                            tomato)                                              cotton)
Derived increase of water   44% to 100%    62%                51%                10%         33%
use efficiency. (%)

Source: Water Conservation, GRID Issue 17, February 2001
                           Table 5.4: Compaing the Economics of Drip and Surface Irrigation in
                                       Pomegranates, Grapes and Tomatoes in India

 N°               Particulars                      Pomegranates                Grapes                 Tomatoes
                                                   Drip   Surface          Drip    Surface         Drip     Surface
  1   Plant spacing (m)                            4.2 x 4.2   4.2 x 4.2   3.0 x 1.8   3.0 x 1.8   1.65 x 0.45   0.9 x 0.6
  2   Cost of drip system ($/Ha)                     600.00            -     875.00            -       600.00            -
      a) Life 5 yrs for lateral / dripper and 10
           yrs for main, submain and filter.
      b) Depreciation ($/Ha)
      c) Interest 13% ($/Ha)                         102.00                 148.75                     102.00
      d) Repair and Maintenance ($/Ha)                36.00                  52.50                      36.00
      e) Total ($/Ha)
                                                      30.00                   43.75                     30.00
                                                     168.00                  245.00                    168.00
  3   Cultivation cost ($/Ha)                        800.00    1,000.00    2,500.00    3,250.00      1,400.00    1.600.00
  4   Total seasonal cost (3+2e) ($/Ha)              968.00    1,000.00    2,745.00    3,250.00      1,568.00    1,600.00

 5    Water used (Lt/day/plant)                     15         17.5         20          40           5           10
 6    Yield (MT/Ha)                                 23         17.5         45          30          75           50
 7    Selling price ($/MT)                           200.00      160.00      180.00      160.00         40.00       40.00
 8    Gross income (6x7) ($/Ha)                    4,600.00    2,800.00    8,100.00    4,800.00      3,000.00    2,000.00
 9    Net seasonal income (8-4) ($/Ha)             3,632.00    1,800.00    5,355.00    1,550.00      1,432.00      400.00
 10   Additional area cultivated due to water             1           -           1           -             1           -
      saving (Ha)
 11   Additional expenditure due to additional       968.00            -   2,745.00            -     1,568.00            -
      area (4x10) ($/Ha)
 12   Additional income due to additional area     4,600.00            -   8,100.00            -     3,000.00            -
      (8x10) ($/Ha)
 13   Additional net income (12-11) ($/Ha)         3,632.00           -    5,355.00           -      1,432.00           -
 14   Gross cost of production (4+11)/2 ($/Ha)       968.00    1,000.00    2,745.00    3,250.00      1,568.00    1,600.00
 15   Gross income (8+12)/2 ($/Ha)                 4,600.00    2,800.00    8,100.00    4,800.00      3,000.00    2,000.00
 16   Benefit:Cost ratio (15/14)                       4.75         2.8        2.95        1.48          1.91        1.25
 17   Net extra income due to drip over            5,464.00    1,800.00    9,160.00    1,550.00      2,464.00           -
      surface irrigation.
      [(13+9Drip) - 9 surf) ($/Ha)


Source: “On-Farm Increased Production, Income and Water Use Efficiency Through Micro Irrigation in
India”, S.M. Taley, R.S. Patode and A.N. Mankar



                 Table 5.5: Comparison of Drip and Surface Irrigation Yields in India

                              Crop            Surface Irrigation Drip Irrigation       Increase,
                                                   (MT/Ha)          (MT/Ha)                %
                        Pomegranates                  7.5                  10.9            45%
                        Grapes                       26.6                  32.5            22%
                        Radish                       16.3                  26.8            64%
                        Tomatoes                     32.0                  48.0            50%
                        Onions                        9.3                  11.2            20%
                        Potatoes                     32.0                  48.0            50%
                                                     23.6                  34.4            46%
                        Maize (corn)                 1.56                  1.81            16%
                        Peanuts                      2.68                   3.2            19%

                       Source: “Drip Irrigation in India”, United Nations Enviromental Programme, Division
                       of Technology, Industry and Economics

				
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