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Eban Bean1, Allan Bacon2, Jovana Radovanovic1 & Victoria Steinnecker1
1Agricultural & Biological Engineering2Soil & Water Sciences
Amending Soils for Water Conservation in New Urban Landscapes
March 20, 2019
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Home Construction~65 days to construct a home:
Heavy vehicle trafficWetting and DryingVehicle vibration
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Soil Compaction
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Urban Soil Development Over Time
Funded by FNGLA Endowed Research Fund Award
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1.731.53
1.34 1.36 1.24
2.161.93 1.80 1.77 1.68
1.001.201.401.601.802.002.202.40
0 3 10 20 30
Bulk
Den
sity,
g/c
m3
Lot Age, yrs
0-15
15-30
1.731.48 1.42 1.38 1.24
2.161.80 1.82 1.73 1.60
1.001.201.401.601.802.002.202.40
0 3 10 20 30
Bulk
Den
sity,
g/c
m3
Lot Age, yrs
0-15
15-30
Chronosequence: Bulk Density
1.23
1.23
BEDS
LAW
NS
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14.124.0 22.6
31.8 34.222.5
35.7 38.7 46.160.0
0.010.020.030.040.050.060.070.0
0 3 10 20 30
Dept
h to
Ref
usal
, cm
Lot Age, yrs
Average of DTRcone (cm)
Average of DTRtube (cm)
14.1 22.9 28.6 24.533.6
22.5 29.7 33.1 42.155.4
0.010.020.030.040.050.060.070.0
0 3 10 20 30
Dept
h to
Ref
usal
, cm
Lot Age, yrs
Average of DTRcone (cm)
Average of DTRtube (cm)
Chronosequence: Depth to RefusalBE
DSLA
WN
S
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Soil Profiles
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9 Model Homes- 3 compacted- 3 tilled (5-6 in.)- 3 tilled compost into soil
4 yd3/1000 ft2
(1 in. into 6 in.)Just before sod (Empire Zoysia) laid
Treatments
0-6 in.
6-12 in.
Compact TillTillw/
Compost
Compact CompactCompact
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1.731.53
1.34 1.36 1.24
2.161.93 1.80 1.77 1.68
1.001.201.401.601.802.002.202.40
0 3 10 20 30
Bulk
Den
sity,
g/c
m3
Lot Age, yrs
0-15
15-30
1.731.48 1.42 1.38 1.24
2.161.80 1.82 1.73 1.60
1.001.201.401.601.802.002.202.40
0 3 10 20 30
Bulk
Den
sity,
g/c
m3
Lot Age, yrs
0-15
15-30
Chronosequence: Bulk Density
1.44
1.44
1.23
1.23
BEDS
LAW
NS
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Soil-Water Relationship
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0.299 0.314 0.297
0.035 0.0510.0760.068
0.049
0.111
NULL TILL COMPOST
VOLU
MET
RIC
WAT
ER C
ON
TEN
T
TREATMENT
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BLUE: CompostGREEN: TillageORANGE: Control
OTOW – Real World Conservation
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OTOW – Real World Water Balance
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OTOW – Real World –Conservation
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• Soil – Candler Sand• Texture, Chemistry, Drainage
• Turfgrass – Empire Zoysia• Amendment Properties
• Longevity• Top Dressing
• Industry Adoption
Future Steps
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Acknowledgements
UF Collaborators:
Allan Bacon, Soil & Water Sciences
AJ Reisinger, Soil & Water Sciences
Jason Kruse, Env. Hort.
Adam Dale, Entomology
Sunny Liao, Soil & Water Sciences
Basil Iannone, SFRC
Lloyd Singleton, IFAS Extension
Mary Lusk, IFAS Water RSA
Pierce Jones, IFAS PREC
Jim Fletcher, IFAS Water RSA
Partners
Phillip Hisey, OToW
Ryan McMeekin, LifeSoils
Darren Midlane, HarvestQuest
Bryan Schmalz, Bay Laurel Water
David Gruber, Earthscapes Unlimited
Funders
FL Turfgrass Association
FL Nursery Growers & Landscape
Assoc.
Southwest Florida Water Mgmt. Dist.
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Eban Z. Bean, Ph.D., P.E.Assistant Professor & Extension Specialist
Urban Water Resources [email protected]
@EbanBean
Questions?