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The Impact of Conservation
          Agriculture on Food Security
          in two districts of Zimbabwe


            Paul Wagstaff,
            Agriculture Advisor, Concern Worldwide

            Malachy Harty,
            International Development & Food Policy, UCC



Malachy Harty, Trocaire Development Review, 12/11/10
2



                       Problems with Conventional
                              Agriculture

       • Reduction of soil fertility and physical structure
              Increased erosion



       • High labour/ energy requirement - barrier to
           participation for poor, sick or elderly farmers
              Delayed planting




Malachy Harty, Trocaire Development Review, 12/11/10
3


                   The Principles of Conservation
                          Agriculture (CA)
        • 1. Avoid Soil Disturbance
             –    Planting basins
             –    direct seed drills
             –    rippers
             –    jab planters


        • 2. Soil Cover
             – Mulching with crop residues
             – Cover crops


        • 3. Crop Rotation
                                                       Planting pits in Zimbabwe


Malachy Harty, Trocaire Development Review, 12/11/10
4



                            Resiliance to Climate Change


      Improved soil structure – reduced erosion
      Water retained in soil



                                                 Conservation

      Low impact - avoids problems of conventional agriculture
      Low carbon system of food production
      Potential value as a carbon sink, but results unclear


Malachy Harty, Trocaire Development Review, 12/11/10
5



      Challenges and Limitations of CA


      • Retention of residues for mulch cover
      • Different spacings for rotation crops
      • Labour in first years
      • Change of mindset




Malachy Harty, Trocaire Development Review, 12/11/10
6

Zimbabwe



            Gokwe North


            Gokwe South


            Nyanga
7


Comparison of maize yields grown in CA
 planting basins, Zimbabwe (CIMMYT)
8


       Where do the yield benefits of Conservation
       Farming come from? (GART, Zambia)




        Value of Conservation Agriculture even if simply to plant on time!

Malachy Harty, Trocaire Development Review, 12/11/10
9



       Conservation Farming in Zimbabwe

         • No draught animals so system based on preparing planting
             basins during the dry season
         • Intensive extension support
         • 50 x 50m Conservation Farming plots (1/4 ha) per household
         • ½ maize, ¼ sorghum, ¼ groundnuts/ cowpeas




Malachy Harty, Trocaire Development Review, 12/11/10
10


        Overview of Household Economy
        Approach (HEA)

      How people in different social and economic circumstances get the food
     and cash they need
      Hyper inflationary situation – cash values irrelevant
      Crop production and income converted into kilo calorie equivalents
      2,100 kcal per person per day survival threshold




Malachy Harty, Trocaire Development Review, 12/11/10
11


                           FIGURE 4: Crop Production (GKN)
                        1000
                         800
                                                                             millet
         KGs produced




                         600                                                 cowpeas
                         400                                                 groundnuts
                         200                                                 sorghum
                                                                             maize
                           0
                               CF V. Poor     V. Poor   CF Poor   Poor GKN
                                  GKN          GKN       GKN




Malachy Harty, Trocaire Development Review, 12/11/10
12

                                   FIGURE 6: Sources of Food
                            140%                                                    barter
   % of annual food needs

                            120%                                                    wild food
                            100%
                                                                                    food aid
                             80%
                             60%                                                    purchase
                             40%                                                    payment in kind
                             20%                                                    l'stock products
                              0%
                                                                                    crops
                                      CF V. Poor V. Poor GKN CF Poor GKN Poor GKN
                                         GKN
 Difficult political and economic situation, poor rains - all groups received food aid

 Poor Conservation Farmers would have needed 50% less food aid than the control
  group.

 The very poor control group had to undertake much more casual labour for food
  which may have resulted in taking children out of school, less time available to
  prepare food, take children to health centres, etc
13



       Results
        CF farmers do not require food aid and are producing
         larger surpluses than conventional farmers

        2010: INGOs will buy maize surpluses from the CF
         farmers to distribute to food deficit areas of Zimbabwe!

        Concern currently expanding CA to Tanzania (EU),
         Zambia & Malawi (Accenture), Liberia




Malachy Harty, Trocaire Development Review, 12/11/10
14



       No magic bullets

           Water
           Markets, trade, infrastructure
           Research
           Extension and education
           Health
           Financial services and insurance
           Inputs
           Land tenure
           Environment


Malachy Harty, Trocaire Development Review, 12/11/10

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Impact of Conservation Agriculture on Food Security in Zimbabwe

  • 1. The Impact of Conservation Agriculture on Food Security in two districts of Zimbabwe Paul Wagstaff, Agriculture Advisor, Concern Worldwide Malachy Harty, International Development & Food Policy, UCC Malachy Harty, Trocaire Development Review, 12/11/10
  • 2. 2 Problems with Conventional Agriculture • Reduction of soil fertility and physical structure  Increased erosion • High labour/ energy requirement - barrier to participation for poor, sick or elderly farmers  Delayed planting Malachy Harty, Trocaire Development Review, 12/11/10
  • 3. 3 The Principles of Conservation Agriculture (CA) • 1. Avoid Soil Disturbance – Planting basins – direct seed drills – rippers – jab planters • 2. Soil Cover – Mulching with crop residues – Cover crops • 3. Crop Rotation Planting pits in Zimbabwe Malachy Harty, Trocaire Development Review, 12/11/10
  • 4. 4 Resiliance to Climate Change  Improved soil structure – reduced erosion  Water retained in soil Conservation  Low impact - avoids problems of conventional agriculture  Low carbon system of food production  Potential value as a carbon sink, but results unclear Malachy Harty, Trocaire Development Review, 12/11/10
  • 5. 5 Challenges and Limitations of CA • Retention of residues for mulch cover • Different spacings for rotation crops • Labour in first years • Change of mindset Malachy Harty, Trocaire Development Review, 12/11/10
  • 6. 6 Zimbabwe  Gokwe North  Gokwe South  Nyanga
  • 7. 7 Comparison of maize yields grown in CA planting basins, Zimbabwe (CIMMYT)
  • 8. 8 Where do the yield benefits of Conservation Farming come from? (GART, Zambia) Value of Conservation Agriculture even if simply to plant on time! Malachy Harty, Trocaire Development Review, 12/11/10
  • 9. 9 Conservation Farming in Zimbabwe • No draught animals so system based on preparing planting basins during the dry season • Intensive extension support • 50 x 50m Conservation Farming plots (1/4 ha) per household • ½ maize, ¼ sorghum, ¼ groundnuts/ cowpeas Malachy Harty, Trocaire Development Review, 12/11/10
  • 10. 10 Overview of Household Economy Approach (HEA)  How people in different social and economic circumstances get the food and cash they need  Hyper inflationary situation – cash values irrelevant  Crop production and income converted into kilo calorie equivalents  2,100 kcal per person per day survival threshold Malachy Harty, Trocaire Development Review, 12/11/10
  • 11. 11 FIGURE 4: Crop Production (GKN) 1000 800 millet KGs produced 600 cowpeas 400 groundnuts 200 sorghum maize 0 CF V. Poor V. Poor CF Poor Poor GKN GKN GKN GKN Malachy Harty, Trocaire Development Review, 12/11/10
  • 12. 12 FIGURE 6: Sources of Food 140% barter % of annual food needs 120% wild food 100% food aid 80% 60% purchase 40% payment in kind 20% l'stock products 0% crops CF V. Poor V. Poor GKN CF Poor GKN Poor GKN GKN  Difficult political and economic situation, poor rains - all groups received food aid  Poor Conservation Farmers would have needed 50% less food aid than the control group.  The very poor control group had to undertake much more casual labour for food which may have resulted in taking children out of school, less time available to prepare food, take children to health centres, etc
  • 13. 13 Results CF farmers do not require food aid and are producing larger surpluses than conventional farmers 2010: INGOs will buy maize surpluses from the CF farmers to distribute to food deficit areas of Zimbabwe! Concern currently expanding CA to Tanzania (EU), Zambia & Malawi (Accenture), Liberia Malachy Harty, Trocaire Development Review, 12/11/10
  • 14. 14 No magic bullets  Water  Markets, trade, infrastructure  Research  Extension and education  Health  Financial services and insurance  Inputs  Land tenure  Environment Malachy Harty, Trocaire Development Review, 12/11/10