Agroecology
Agroecology
Why is there a course in agroecology?
Agroecology
Why is there a course in agroecology?

            Sustainability
Agroecology
     Why is there a course in agroecology?

                  Sustainability

Threatened by conventional agric...
Agroecology
     Why is there a course in agroecology?

                  Sustainability

Threatened by conventional agric...
Agroecology
     Why is there a course in agroecology?

                  Sustainability

Threatened by conventional agric...
Conventional Agriculture
Conventional Agriculture
         Central ideas:
      Maximize production
       Maximize profits
Conventional Agriculture
                  Central ideas:
               Maximize production
                Maximize profi...
Conventional Agriculture
Conventional Agriculture


   Is conventional agriculture bad?
Conventional Agriculture


   Is conventional agriculture bad?

    What got us to where we are?
Conventional Agriculture
Conventional Agriculture
       Intensive Tillage
Conventional Agriculture
               Intensive Tillage
Seedbed prep, drainage, root growth, weed control
Conventional Agriculture
                Intensive Tillage
 Seedbed prep, drainage, root growth, weed control

 ...but ero...
Conventional Agriculture
Conventional Agriculture
       Monoculture
Conventional Agriculture
                  Monoculture
Efficiency, weed control, pest control, ease of harvest
Conventional Agriculture
                  Monoculture
Efficiency, weed control, pest control, ease of harvest

...but now ...
Conventional Agriculture
Conventional Agriculture
     Synthetic Fertilizer
Conventional Agriculture
                 Synthetic Fertilizer
High yield increases, uniform application, rapid uptake/use
Conventional Agriculture
                 Synthetic Fertilizer
High yield increases, uniform application, rapid uptake/use...
Conventional Agriculture
                 Synthetic Fertilizer
High yield increases, uniform application, rapid uptake/use...
Conventional Agriculture
Conventional Agriculture
         Irrigation
Conventional Agriculture
                Irrigation
 Yield increases (water is a limiting factor)
Conventional Agriculture
                Irrigation
 Yield increases (water is a limiting factor)
   16% of the world’s ag...
Conventional Agriculture
                Irrigation
 Yield increases (water is a limiting factor)
   16% of the world’s ag...
Conventional Agriculture
                Irrigation
 Yield increases (water is a limiting factor)
   16% of the world’s ag...
Conventional Agriculture
                  Irrigation
   Yield increases (water is a limiting factor)
     16% of the worl...
Conventional Agriculture
Conventional Agriculture

Pest & Weed Control with Chemicals
Conventional Agriculture

Pest & Weed Control with Chemicals
       Short-term pest removal
Conventional Agriculture

Pest & Weed Control with Chemicals
           Short-term pest removal
...but what happens to foo...
Conventional Agriculture
Conventional Agriculture
    Plant Gene Manipulation
Conventional Agriculture
    Plant Gene Manipulation

              Selection has been practiced a
             long time,...
Conventional Agriculture
    Plant Gene Manipulation

              Selection has been practiced a
             long time,...
Conventional Agriculture
    Plant Gene Manipulation

              Selection has been practiced a
             long time,...
Conventional v. Sustainable
Conventional v. Sustainable
    Present v. Future
Conventional v. Sustainable
    Present v. Future
Conventional v. Sustainable
    Present v. Future




     The Green Revolution
Conventional v. Sustainable
    Present v. Future




     The Green Revolution
        Dr. Norman Borlaug
kg/Ha




       0
           500
                 1000
                                        1500
                     ...
Conventional v. Sustainable
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable
                      Soil Degradation
Why Conventional isn’t Sustainable
                      Soil Degradation
                           erosion
Why Conventional isn’t Sustainable
                      Soil Degradation
                           erosion
             ...
Why Conventional isn’t Sustainable
                      Soil Degradation
                           erosion
             ...
Why Conventional isn’t Sustainable
                      Soil Degradation
                           erosion
             ...
Why Conventional isn’t Sustainable
                      Soil Degradation
                            erosion
            ...
Why Conventional isn’t Sustainable
                      Soil Degradation
                            erosion
            ...
Why Conventional isn’t Sustainable
                      Soil Degradation
                            erosion
            ...
Why Conventional isn’t Sustainable
                      Soil Degradation
                            erosion
            ...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable
     Erosion
Why Conventional isn’t Sustainable
         Erosion
Where is the soil lost from?
Why Conventional isn’t Sustainable
          Erosion
 Where is the soil lost from?
Organic matter & Fertility lost
Why Conventional isn’t Sustainable
          Erosion
 Where is the soil lost from?
Organic matter & Fertility lost
makes f...
Why Conventional isn’t Sustainable
          Erosion
 Where is the soil lost from?
Organic matter & Fertility lost
makes f...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable
    Water Use
Why Conventional isn’t Sustainable
       Water Use
 Water rights are a big deal
Why Conventional isn’t Sustainable
       Water Use
 Water rights are a big deal
Agriculture accounts for 2/3
  of worldwi...
Why Conventional isn’t Sustainable
       Water Use
 Water rights are a big deal
Agriculture accounts for 2/3
  of worldwi...
Why Conventional isn’t Sustainable
       Water Use
 Water rights are a big deal
Agriculture accounts for 2/3
  of worldwi...
Why Conventional isn’t Sustainable
       Water Use
 Water rights are a big deal
Agriculture accounts for 2/3
  of worldwi...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable
        Environmental Pollution
Why Conventional isn’t Sustainable
        Environmental Pollution
        Are all nutrient and pesticide
          additi...
Why Conventional isn’t Sustainable
        Environmental Pollution
        Are all nutrient and pesticide
          additi...
Why Conventional isn’t Sustainable
        Environmental Pollution
        Are all nutrient and pesticide
          additi...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable
     Dependence on External Inputs
Why Conventional isn’t Sustainable
     Dependence on External Inputs
      Now, think about this. Do people who
      pra...
Why Conventional isn’t Sustainable
      Dependence on External Inputs
       Now, think about this. Do people who
       ...
Why Conventional isn’t Sustainable
     Dependence on External Inputs
      Now, think about this. Do people who
      pra...
Why Conventional isn’t Sustainable
      Dependence on External Inputs
      Now, think about this. Do people who
      pr...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable
             Loss of Genetic Diversity
Why Conventional isn’t Sustainable
             Loss of Genetic Diversity
             In the past, agriculture has relied...
Why Conventional isn’t Sustainable
             Loss of Genetic Diversity
             In the past, agriculture has relied...
Why Conventional isn’t Sustainable
             Loss of Genetic Diversity
             In the past, agriculture has relied...
Why Conventional isn’t Sustainable
             Loss of Genetic Diversity
             In the past, agriculture has relied...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable
   Loss of Genetic Diversity (continued)
Why Conventional isn’t Sustainable
   Loss of Genetic Diversity (continued)
   This loss is a result of the desire for sho...
Why Conventional isn’t Sustainable
   Loss of Genetic Diversity (continued)
   This loss is a result of the desire for sho...
Why Conventional isn’t Sustainable
   Loss of Genetic Diversity (continued)
   This loss is a result of the desire for sho...
Why Conventional isn’t Sustainable
   Loss of Genetic Diversity (continued)
   This loss is a result of the desire for sho...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable
   Loss of Genetic Diversity (some more)
Why Conventional isn’t Sustainable
   Loss of Genetic Diversity (some more)
      Greenbug (aphid) and sorghum example
Why Conventional isn’t Sustainable
      Loss of Genetic Diversity (some more)
          Greenbug (aphid) and sorghum exam...
Why Conventional isn’t Sustainable
      Loss of Genetic Diversity (some more)
          Greenbug (aphid) and sorghum exam...
Why Conventional isn’t Sustainable
      Loss of Genetic Diversity (some more)
          Greenbug (aphid) and sorghum exam...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable

  Loss of Local Control over Ag Production
Why Conventional isn’t Sustainable

   Loss of Local Control over Ag Production
Everybody knows that there’s fewer farmers...
Why Conventional isn’t Sustainable

   Loss of Local Control over Ag Production
Everybody knows that there’s fewer farmers...
Why Conventional isn’t Sustainable

    Loss of Local Control over Ag Production
Everybody knows that there’s fewer farmer...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable
           Global Inequality
Why Conventional isn’t Sustainable
           Global Inequality
          People are still starving
Why Conventional isn’t Sustainable
           Global Inequality
          People are still starving
Why Conventional isn’t Sustainable
                Global Inequality
               People are still starving




    Deve...
Why Conventional isn’t Sustainable
Why Conventional isn’t Sustainable

         Having said all that...
Why Conventional isn’t Sustainable

                Having said all that...
 High-yielding agriculture has done real good ...
Why Conventional isn’t Sustainable

                Having said all that...
 High-yielding agriculture has done real good ...
Why Conventional isn’t Sustainable

                Having said all that...
 High-yielding agriculture has done real good ...
Why Conventional isn’t Sustainable

                  Having said all that...
   High-yielding agriculture has done real g...
Sustainability
Sustainability

What are we shooting for?
Sustainability

What are we shooting for?
Long-term productivity of the land
Sustainability

   What are we shooting for?
  Long-term productivity of the land
For us that means doing things different
Sustainability

   What are we shooting for?
  Long-term productivity of the land
For us that means doing things different...
Sustainability
Sustainability
Can you define it?
Sustainability
                  Can you define it?
Minimal negative effects on the environment & local ecology
Sustainability
                   Can you define it?
Minimal negative effects on the environment & local ecology
     Prese...
Sustainability
                   Can you define it?
Minimal negative effects on the environment & local ecology
     Prese...
Sustainability
                   Can you define it?
Minimal negative effects on the environment & local ecology
     Prese...
Sustainability
                   Can you define it?
Minimal negative effects on the environment & local ecology
     Prese...
Agroecology
Agroecology
A fancy word for wise agriculture
Agroecology
        A fancy word for wise agriculture
We cannot ignore the problems of conventional ag, but we
           ...
Agroecology
        A fancy word for wise agriculture
We cannot ignore the problems of conventional ag, but we
           ...
Agroecology
        A fancy word for wise agriculture
We cannot ignore the problems of conventional ag, but we
           ...
Thought Questions
Thought Questions


What are the issues of greatest importance that
threaten the sustainability of agriculture in the
town...
AECL Lecture 1
Upcoming SlideShare
Loading in …5
×

AECL Lecture 1

1,237 views

Published on

Published in: Education, Technology, Business
0 Comments
2 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,237
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
92
Comments
0
Likes
2
Embeds 0
No embeds

No notes for slide

AECL Lecture 1

  1. 1. Agroecology
  2. 2. Agroecology Why is there a course in agroecology?
  3. 3. Agroecology Why is there a course in agroecology? Sustainability
  4. 4. Agroecology Why is there a course in agroecology? Sustainability Threatened by conventional agricultural principles
  5. 5. Agroecology Why is there a course in agroecology? Sustainability Threatened by conventional agricultural principles What are those principles?
  6. 6. Agroecology Why is there a course in agroecology? Sustainability Threatened by conventional agricultural principles What are those principles? Let’s discuss the Wendell Berry essay
  7. 7. Conventional Agriculture
  8. 8. Conventional Agriculture Central ideas: Maximize production Maximize profits
  9. 9. Conventional Agriculture Central ideas: Maximize production Maximize profits Intensive Tillage Chemical pest control Inorganic fertilizers Irrigation Monoculture Genetic manipulation of crop plants
  10. 10. Conventional Agriculture
  11. 11. Conventional Agriculture Is conventional agriculture bad?
  12. 12. Conventional Agriculture Is conventional agriculture bad? What got us to where we are?
  13. 13. Conventional Agriculture
  14. 14. Conventional Agriculture Intensive Tillage
  15. 15. Conventional Agriculture Intensive Tillage Seedbed prep, drainage, root growth, weed control
  16. 16. Conventional Agriculture Intensive Tillage Seedbed prep, drainage, root growth, weed control ...but erosion tends to increase, soil organic matter decreases, compaction is increased, structure may be impacted
  17. 17. Conventional Agriculture
  18. 18. Conventional Agriculture Monoculture
  19. 19. Conventional Agriculture Monoculture Efficiency, weed control, pest control, ease of harvest
  20. 20. Conventional Agriculture Monoculture Efficiency, weed control, pest control, ease of harvest ...but now you have a whole field of food for a pest
  21. 21. Conventional Agriculture
  22. 22. Conventional Agriculture Synthetic Fertilizer
  23. 23. Conventional Agriculture Synthetic Fertilizer High yield increases, uniform application, rapid uptake/use
  24. 24. Conventional Agriculture Synthetic Fertilizer High yield increases, uniform application, rapid uptake/use ...but in large quantities can be leached from the soil and cause damage through groundwater contamination, collection in larger bodies of water, variable costs
  25. 25. Conventional Agriculture Synthetic Fertilizer High yield increases, uniform application, rapid uptake/use ...but in large quantities can be leached from the soil and cause damage through groundwater contamination, collection in larger bodies of water, variable costs Did you know that the worldwide average Nitrogen Use Efficiency is 33%?
  26. 26. Conventional Agriculture
  27. 27. Conventional Agriculture Irrigation
  28. 28. Conventional Agriculture Irrigation Yield increases (water is a limiting factor)
  29. 29. Conventional Agriculture Irrigation Yield increases (water is a limiting factor) 16% of the world’s ag land is irrigated
  30. 30. Conventional Agriculture Irrigation Yield increases (water is a limiting factor) 16% of the world’s ag land is irrigated ...and it produces 40% of the world’s food
  31. 31. Conventional Agriculture Irrigation Yield increases (water is a limiting factor) 16% of the world’s ag land is irrigated ...and it produces 40% of the world’s food What are problems with heavy irrigation?
  32. 32. Conventional Agriculture Irrigation Yield increases (water is a limiting factor) 16% of the world’s ag land is irrigated ...and it produces 40% of the world’s food What are problems with heavy irrigation? Replenishment, ecological effects of dams, increases fertilizer leaching
  33. 33. Conventional Agriculture
  34. 34. Conventional Agriculture Pest & Weed Control with Chemicals
  35. 35. Conventional Agriculture Pest & Weed Control with Chemicals Short-term pest removal
  36. 36. Conventional Agriculture Pest & Weed Control with Chemicals Short-term pest removal ...but what happens to food chains? Resistance? Leaching? Human health?
  37. 37. Conventional Agriculture
  38. 38. Conventional Agriculture Plant Gene Manipulation
  39. 39. Conventional Agriculture Plant Gene Manipulation Selection has been practiced a long time, but here we’re talking about genetic manipulation
  40. 40. Conventional Agriculture Plant Gene Manipulation Selection has been practiced a long time, but here we’re talking about genetic manipulation High-yielding hybrids, pesticide use reduced
  41. 41. Conventional Agriculture Plant Gene Manipulation Selection has been practiced a long time, but here we’re talking about genetic manipulation High-yielding hybrids, pesticide use reduced ...and hybrids require optimal conditions (fertilizer & water), seed is dissimilar to the parent (why is this important?)
  42. 42. Conventional v. Sustainable
  43. 43. Conventional v. Sustainable Present v. Future
  44. 44. Conventional v. Sustainable Present v. Future
  45. 45. Conventional v. Sustainable Present v. Future The Green Revolution
  46. 46. Conventional v. Sustainable Present v. Future The Green Revolution Dr. Norman Borlaug
  47. 47. kg/Ha 0 500 1000 1500 2000 2500 1961 3000 1964 1967 1970 1973 1976 1979 1982 1985 1988 1991 1994 1997 2000 2003 2006 Maize Barley Wheat Conventional v. Sustainable
  48. 48. Conventional v. Sustainable
  49. 49. Why Conventional isn’t Sustainable
  50. 50. Why Conventional isn’t Sustainable Soil Degradation
  51. 51. Why Conventional isn’t Sustainable Soil Degradation erosion
  52. 52. Why Conventional isn’t Sustainable Soil Degradation erosion waterlogging
  53. 53. Why Conventional isn’t Sustainable Soil Degradation erosion waterlogging compaction
  54. 54. Why Conventional isn’t Sustainable Soil Degradation erosion waterlogging compaction contamination
  55. 55. Why Conventional isn’t Sustainable Soil Degradation erosion waterlogging compaction contamination structure problems
  56. 56. Why Conventional isn’t Sustainable Soil Degradation erosion waterlogging compaction contamination structure problems Erosion
  57. 57. Why Conventional isn’t Sustainable Soil Degradation erosion waterlogging compaction contamination structure problems Erosion 4 T/A/Yr can be “acceptable”
  58. 58. Why Conventional isn’t Sustainable Soil Degradation erosion waterlogging compaction contamination structure problems Erosion 4 T/A/Yr can be “acceptable” Conventional Ag often leaves soil bare
  59. 59. Why Conventional isn’t Sustainable
  60. 60. Why Conventional isn’t Sustainable Erosion
  61. 61. Why Conventional isn’t Sustainable Erosion Where is the soil lost from?
  62. 62. Why Conventional isn’t Sustainable Erosion Where is the soil lost from? Organic matter & Fertility lost
  63. 63. Why Conventional isn’t Sustainable Erosion Where is the soil lost from? Organic matter & Fertility lost makes farmers rely on inputs
  64. 64. Why Conventional isn’t Sustainable Erosion Where is the soil lost from? Organic matter & Fertility lost makes farmers rely on inputs unsustainable
  65. 65. Why Conventional isn’t Sustainable
  66. 66. Why Conventional isn’t Sustainable Water Use
  67. 67. Why Conventional isn’t Sustainable Water Use Water rights are a big deal
  68. 68. Why Conventional isn’t Sustainable Water Use Water rights are a big deal Agriculture accounts for 2/3 of worldwide water use
  69. 69. Why Conventional isn’t Sustainable Water Use Water rights are a big deal Agriculture accounts for 2/3 of worldwide water use Plant water use efficiency is around 50%!
  70. 70. Why Conventional isn’t Sustainable Water Use Water rights are a big deal Agriculture accounts for 2/3 of worldwide water use Plant water use efficiency is around 50%! Ag water use has a broader ecological effect
  71. 71. Why Conventional isn’t Sustainable Water Use Water rights are a big deal Agriculture accounts for 2/3 of worldwide water use Plant water use efficiency is around 50%! Ag water use has a broader ecological effect Microclimate effects
  72. 72. Why Conventional isn’t Sustainable
  73. 73. Why Conventional isn’t Sustainable Environmental Pollution
  74. 74. Why Conventional isn’t Sustainable Environmental Pollution Are all nutrient and pesticide additions 100% efficient?
  75. 75. Why Conventional isn’t Sustainable Environmental Pollution Are all nutrient and pesticide additions 100% efficient? And the unused stuff?
  76. 76. Why Conventional isn’t Sustainable Environmental Pollution Are all nutrient and pesticide additions 100% efficient? And the unused stuff?
  77. 77. Why Conventional isn’t Sustainable
  78. 78. Why Conventional isn’t Sustainable Dependence on External Inputs
  79. 79. Why Conventional isn’t Sustainable Dependence on External Inputs Now, think about this. Do people who practice organic agriculture use inputs?
  80. 80. Why Conventional isn’t Sustainable Dependence on External Inputs Now, think about this. Do people who practice organic agriculture use inputs? irrigation, fertilizers, pesticides cost energy that is not renewable (fossil fuels)
  81. 81. Why Conventional isn’t Sustainable Dependence on External Inputs Now, think about this. Do people who practice organic agriculture use inputs? irrigation, fertilizers, pesticides cost energy that is not renewable (fossil fuels) Now, think again. Is it morally wrong to use something that is not renewable?
  82. 82. Why Conventional isn’t Sustainable Dependence on External Inputs Now, think about this. Do people who practice organic agriculture use inputs? irrigation, fertilizers, pesticides cost energy that is not renewable (fossil fuels) Now, think again. Is it morally wrong to use something that is not renewable? The inputs come from outside the relative ecosystem, so now you depend on an uncontrollable resource. The longer they are used, the more you depend on them
  83. 83. Why Conventional isn’t Sustainable
  84. 84. Why Conventional isn’t Sustainable Loss of Genetic Diversity
  85. 85. Why Conventional isn’t Sustainable Loss of Genetic Diversity In the past, agriculture has relied on local diversity (adapted traits) and recruiting wild species into the gene pool
  86. 86. Why Conventional isn’t Sustainable Loss of Genetic Diversity In the past, agriculture has relied on local diversity (adapted traits) and recruiting wild species into the gene pool We know that now only around six varieties of corn account for 70% of the world’s corn crop
  87. 87. Why Conventional isn’t Sustainable Loss of Genetic Diversity In the past, agriculture has relied on local diversity (adapted traits) and recruiting wild species into the gene pool We know that now only around six varieties of corn account for 70% of the world’s corn crop About half the wheat varieties in the US are descendants of lines produced by Norman Borlaug and collegues
  88. 88. Why Conventional isn’t Sustainable Loss of Genetic Diversity In the past, agriculture has relied on local diversity (adapted traits) and recruiting wild species into the gene pool We know that now only around six varieties of corn account for 70% of the world’s corn crop About half the wheat varieties in the US are descendants of lines produced by Norman Borlaug and collegues Anything wrong with that?
  89. 89. Why Conventional isn’t Sustainable
  90. 90. Why Conventional isn’t Sustainable Loss of Genetic Diversity (continued)
  91. 91. Why Conventional isn’t Sustainable Loss of Genetic Diversity (continued) This loss is a result of the desire for short-term productivity gains
  92. 92. Why Conventional isn’t Sustainable Loss of Genetic Diversity (continued) This loss is a result of the desire for short-term productivity gains The plants that are replaced could have really desirable or potentially desirable traits
  93. 93. Why Conventional isn’t Sustainable Loss of Genetic Diversity (continued) This loss is a result of the desire for short-term productivity gains The plants that are replaced could have really desirable or potentially desirable traits Homogeneous crop ‘germplasm’ (parentage) are now more vulnerable...vulnerable to what?
  94. 94. Why Conventional isn’t Sustainable Loss of Genetic Diversity (continued) This loss is a result of the desire for short-term productivity gains The plants that are replaced could have really desirable or potentially desirable traits Homogeneous crop ‘germplasm’ (parentage) are now more vulnerable...vulnerable to what? It is important to have a large genetic reservoir as we look to possible future problems or diseases
  95. 95. Why Conventional isn’t Sustainable
  96. 96. Why Conventional isn’t Sustainable Loss of Genetic Diversity (some more)
  97. 97. Why Conventional isn’t Sustainable Loss of Genetic Diversity (some more) Greenbug (aphid) and sorghum example
  98. 98. Why Conventional isn’t Sustainable Loss of Genetic Diversity (some more) Greenbug (aphid) and sorghum example $100 million in damages $50 million in pesticides the following year
  99. 99. Why Conventional isn’t Sustainable Loss of Genetic Diversity (some more) Greenbug (aphid) and sorghum example $100 million in damages Sorghum variety was $50 million discovered with in pesticides tolerance the following year
  100. 100. Why Conventional isn’t Sustainable Loss of Genetic Diversity (some more) Greenbug (aphid) and sorghum example $100 million in damages Sorghum variety was $50 million discovered with in pesticides tolerance the following year BOOM
  101. 101. Why Conventional isn’t Sustainable
  102. 102. Why Conventional isn’t Sustainable Loss of Local Control over Ag Production
  103. 103. Why Conventional isn’t Sustainable Loss of Local Control over Ag Production Everybody knows that there’s fewer farmers farming bigger fields now
  104. 104. Why Conventional isn’t Sustainable Loss of Local Control over Ag Production Everybody knows that there’s fewer farmers farming bigger fields now Business-farming often does not take part in local place- based knowledge
  105. 105. Why Conventional isn’t Sustainable Loss of Local Control over Ag Production Everybody knows that there’s fewer farmers farming bigger fields now Business-farming often does not take part in local place- based knowledge But, with the rise of Organic Foods, there is a parallel rise in niche producers
  106. 106. Why Conventional isn’t Sustainable
  107. 107. Why Conventional isn’t Sustainable Global Inequality
  108. 108. Why Conventional isn’t Sustainable Global Inequality People are still starving
  109. 109. Why Conventional isn’t Sustainable Global Inequality People are still starving
  110. 110. Why Conventional isn’t Sustainable Global Inequality People are still starving Developing countries tend to become satellite producers for the developed world, relying on high-yielding varieties and non-renewable inputs
  111. 111. Why Conventional isn’t Sustainable
  112. 112. Why Conventional isn’t Sustainable Having said all that...
  113. 113. Why Conventional isn’t Sustainable Having said all that... High-yielding agriculture has done real good in the world
  114. 114. Why Conventional isn’t Sustainable Having said all that... High-yielding agriculture has done real good in the world But, it can’t be relied on for the long-term
  115. 115. Why Conventional isn’t Sustainable Having said all that... High-yielding agriculture has done real good in the world But, it can’t be relied on for the long-term Oh, and we don’t have a lot more land to develop
  116. 116. Why Conventional isn’t Sustainable Having said all that... High-yielding agriculture has done real good in the world But, it can’t be relied on for the long-term Oh, and we don’t have a lot more land to develop ...But a lot of this topic used to be in the context of a huge increase in population worldwide, which according to Albert Gore won’t actually happen
  117. 117. Sustainability
  118. 118. Sustainability What are we shooting for?
  119. 119. Sustainability What are we shooting for? Long-term productivity of the land
  120. 120. Sustainability What are we shooting for? Long-term productivity of the land For us that means doing things different
  121. 121. Sustainability What are we shooting for? Long-term productivity of the land For us that means doing things different System renewal
  122. 122. Sustainability
  123. 123. Sustainability Can you define it?
  124. 124. Sustainability Can you define it? Minimal negative effects on the environment & local ecology
  125. 125. Sustainability Can you define it? Minimal negative effects on the environment & local ecology Preserve and rebuild soil fertility, prevent erosion
  126. 126. Sustainability Can you define it? Minimal negative effects on the environment & local ecology Preserve and rebuild soil fertility, prevent erosion Use water so that aquifers are restored and other water needs are met
  127. 127. Sustainability Can you define it? Minimal negative effects on the environment & local ecology Preserve and rebuild soil fertility, prevent erosion Use water so that aquifers are restored and other water needs are met Rely on resources within the agroecosystem
  128. 128. Sustainability Can you define it? Minimal negative effects on the environment & local ecology Preserve and rebuild soil fertility, prevent erosion Use water so that aquifers are restored and other water needs are met Rely on resources within the agroecosystem Work to conserve biodiversity
  129. 129. Agroecology
  130. 130. Agroecology A fancy word for wise agriculture
  131. 131. Agroecology A fancy word for wise agriculture We cannot ignore the problems of conventional ag, but we cannot just abandon it
  132. 132. Agroecology A fancy word for wise agriculture We cannot ignore the problems of conventional ag, but we cannot just abandon it Traditional (old), resource-conserving, local, small-scale
  133. 133. Agroecology A fancy word for wise agriculture We cannot ignore the problems of conventional ag, but we cannot just abandon it Traditional (old), resource-conserving, local, small-scale Definition: The application of ecological concepts and principles to the design and management of sustainable agricultural systems
  134. 134. Thought Questions
  135. 135. Thought Questions What are the issues of greatest importance that threaten the sustainability of agriculture in the town or region in which you live?

×