Urban Soils - Ecologically Disturbed Sites 5/3/15
Adaptive Leadership in Organic Land Care
What is an adaptive challenge?
Adaptive Challenge
Requires philosophical and behavioral change,
putting us at the forefront of our
capabilities. It can not simply be solved through
technical means.
Fritz1868
Haber
1934
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
Soil Structure
Upper Root Zone 12”
Lower Root Zone 12”
Base Component *****
12”
Sub-Soil
Soil Horizon
Nutrient Availability
Bringing Custom Compost To The Site
Compost Components
Source of Components
Proportion for Each Mix
BacterialMix
FungalMix
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%
COMPOST
TEA
Harvard
Massachusetts Hall
March 10 Test Plot
May 2 Control
May 2nd Test Plot
Rose F Kennedy Greenway
Existing Conditions
Soils with low nutrient cycling capacity
Boxwood doing poorly as a result
Boxwood
Increasing Natural Nutrient Cycling CapacityBy:Injecting a Liquid BiologicalAmendment high in fungi and protozoa into root zones of Boxwoods. Holes backfilled with an organic food source.
Turf condition
Turf had a 1.5 inch layer of thatchalong with only a 3-inch developed rootsystem.
Brooklyn Bridge Park
March 21, 2010
March 23, 2010
March 22, 2010
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