Grow Biointensive Farming and Gardening a Sustainable Agricultural System - North Carolina State University


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Grow Biointensive Farming and Gardening a Sustainable Agricultural System - North Carolina State University

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Grow Biointensive Farming and Gardening a Sustainable Agricultural System - North Carolina State University

  1. 1. Grow BiointensiveFarming and GardeningA Sustainable Agricultural System Seasons of Sustainable Agriculture September 15, 2008 Steve Moore North Carolina State University Center for Environmental Farming Systems, CEFS Goldsboro NC, 919 218 4642
  2. 2. Historical Perspective (Ancient)Chinese Agriculture - 4,000-6,000years oldJapanese Agriculture - 2,000-6,000years oldGreek Agriculture – 2,000 years oldBolivian, Peruvian, MayanAgriculture – 1,000 years old
  3. 3. Historical Perspective (Resent)Monastary “preserves”French IntensiveBio-Dynamics (Steiner)Bio-Dynamic/French Intensive – Alan Chadwick at Santa CruzGrow Biointensive – John Jeavons at Ecology Action, Willits CA.
  4. 4. Current agricultural ProblemsMore people to feed and less land10 calories of Fossil fuel to produce1 calorie of foodDeclining water availability (40% of grainirrigated)Reduced genetic base; over 95% of seedvarieties ever used have been lostDeclining nutrient quality of food
  5. 5. Advantages of Biointensive AgricultureProduce 2-6 times as much food in thesame areaReduce the energy demands (almosteliminate fossil fuels)Use water 3-8 times more effectivelyDevelop a local, diverse, and secure seedbaseProvide self contained closed loop fertility
  6. 6. 8 Basic Components of BiointensiveDeep soil preparation Compost allows obtained fromClose plant spacing Sustainable soil fertility and the practice of which provides aCompanion planting Complete diet using within aOpen pollinated seeds Whole system fed by
  7. 7. A Healthy Soil
  8. 8. Importance of Particle Size
  9. 9. Volume Composition of Soil
  10. 10. Permanent Beds and Pathways
  11. 11. Double Digging
  12. 12. The U-bar
  13. 13. Alternative toolfor double digging
  14. 14. Using Plants to loosen the soil
  15. 15. Root Depth of Selected Vegetables (from “How to Grow More Vegetables”)
  16. 16. One ounce of healthy soil has…Several billion bacteria (15,000 different kinds)3 million yeast1.4 million algae1 million protozoaMacro vertebrates:(worms, mites, millipedes, centipedes and insects)
  17. 17. Importance of Rhizosphere100 times the biological activityBuffers pH +/- 10 times (1 pH point)Solubilize nutrients from soil
  18. 18. Nutrient AvailabilityBiological activity increases nutrients inseveral ways (pH and metabolic byproducts)Cation exchange capacity (CEC)Organic vs inorganic systems (Journal of nutrition)
  19. 19. Soil pH and Nutrient Availability (from “Methods for Assessing Soil Quality”)
  20. 20. Close Plant Spacings
  21. 21. (from “Lazy Bed Gardening” Jeavons and Cox)
  22. 22. Interplanting
  23. 23. 4 Square Planting
  24. 24. Companion Planting Borage for pollination
  25. 25. Insectary Crops
  26. 26. Open Pollinated Seeds
  27. 27. Velvet Roller Seed Cleaner
  28. 28. Rubbing Board Seed Cleaner
  29. 29. Compost for maximum returnC:N ratio (45-60:1)Mesophylic pile temperatureAdd soilUse Structural carbon (waxes, cellulose,lignins)Correct moisture (55%)
  30. 30. Compost Crops1/3 of total area dedicated to carbon forsoilMultiple duty cropsCarbon examples: Corn, JerusalemArtichokes, Grains, SunflowersNitrogen examples: Fava beans, alfalfa,comfrey
  31. 31. Complete DietCalorie efficientKitchen efficientSpace efficientCarbon efficientStorage efficient
  32. 32. No Till
  33. 33. PermacultureUse the natural properties Add enhancementsof your land Rain water collecting Sun Extend the season Wind Container gardening Shade Indoor gardening Slope
  34. 34. Energy Use in Chemical Agriculture 17% off US energy is used for Agriculture The Green Revolution increased the energy flow by an average of 50 times In 1990 we used 100 gal of oil to produce food on one acre Oil reserves will be insufficient to meet demand by 2020 (UN Development Programme)
  35. 35. Energy Use in Organic AgricultureUses less fossil fuel fertilizers (31% 0fchemical agriculture budget)Many studies have indicated that organicis only 58-90% as productiveAs a result, in some cases, organicactually uses more energy per yield thanchemical agriculture.
  36. 36. Agricultural ProductivityPeppers; 11 times (1100%) the US AverageEggplant; 7 times the US AverageCarrots; 7.4 times the US Average, 487 lbs./bed (100 sq. ft.)Onions; 4.2 times the US Average, 380 lbs./bedRye; 12 times the US AverageGarlic; 3 times the US Average
  37. 37. Plant to Invite Beneficial Insects
  38. 38. Steve 919-218-4642 For more information on Biointensive contact: Ecology Action 5798 Ridgewood Rd. Willits CA 95490