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Eric 'T' Fleischer - Compost Tea Time

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Eric 'T' Fleischer - Compost Tea Time

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Eric ‘T’ Fleischer, Consultant, Harvard Landscape Services

There are many challenges in improving urban soils. Eric Fleischer reviews these challenges and focuses on Harvard’s successful soil-enhancement project using compost tea applications.

Presented at the Urban and Suburban Carbon Farming to Reverse Global Warming conference at Harvard University on May 3, 2015, organized by Biodiversity for a Livable Climate.

www.bio4climate.org

Eric ‘T’ Fleischer, Consultant, Harvard Landscape Services

There are many challenges in improving urban soils. Eric Fleischer reviews these challenges and focuses on Harvard’s successful soil-enhancement project using compost tea applications.

Presented at the Urban and Suburban Carbon Farming to Reverse Global Warming conference at Harvard University on May 3, 2015, organized by Biodiversity for a Livable Climate.

www.bio4climate.org

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  1. 1. Urban Soils - Ecologically Disturbed Sites 5/3/15 Adaptive Leadership in Organic Land Care
  2. 2. What is an adaptive challenge?
  3. 3. Adaptive Challenge Requires philosophical and behavioral change, putting us at the forefront of our capabilities. It can not simply be solved through technical means.
  4. 4. Fritz 1868 Haber 1934
  5. 5. Sound Horticultural Practice - Process Based 1. Soil Management – Testing and Diagnosis 2. Composting – Natural Nutrient Cycling 3. Plant Selection and Placement 4. Pest and Disease Control - Non-Toxic 5. Irrigation Management - Water conservation 6. Proper Planting Techniques 7. Proper Pruning Techniques
  6. 6. Soil Structure
  7. 7. Upper Root Zone 12” Lower Root Zone 12” Base Component ***** 12” Sub-Soil Soil Horizon
  8. 8. Nutrient Availability
  9. 9. Bringing Custom Compost To The Site
  10. 10. Compost Components Source of Components Proportion for Each Mix Bacterial Mix Fungal Mix Nitrogen Manure, Legume, Grass Clippings, Vegetable Waste 25% 25% Bacterial (Green) Herbaceous Materials, Hay, Weeds 45% 30% Fungal (Woody) Wood Chips, Leaves, Sawdust, Newspaper 30% 45%
  11. 11. C O M P O S T T E A
  12. 12. Harvard
  13. 13. Massachusetts Hall
  14. 14. March 10 Test Plot May 2 Control May 2nd Test Plot
  15. 15. Rose F Kennedy Greenway
  16. 16. Existing Conditions Soils with low nutrient cycling capacity Boxwood doing poorly as a result Boxwood Increasing Natural Nutrient Cycling Capacity By: Injecting a Liquid Biological Amendment high in fungi and protozoa into root zones of Boxwoods. Holes backfilled with an organic food source.
  17. 17. Turf condition Turf had a 1.5 inch layer of thatch along with only a 3-inch developed root system.
  18. 18. Brooklyn Bridge Park
  19. 19. March 21, 2010 March 23, 2010 March 22, 2010

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