soil drainage research unit norman r. fausey, research leader 590 woody hayes drive columbus, oh...
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Soil Drainage Research UnitNorman R. Fausey, Research Leader
590 Woody Hayes DriveColumbus, OH 43210
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Drained Land Hydrology
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Drained Land Hydrology
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SEASONAL DRAINAGE FLOWS (March-September)
OARDC, North Central Branch, Castalia, OH1962 – 1980 (19 years)
Average rainfall ~ 24 inchesToledo and Fulton silty clay soils
Surface drainage 3.98 inchesSubsurface drainage 5.18 inchesSurface and subsurface drainage 5.92 inches
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SEASONAL SUBSURFACE DRAINAGE FLOWS (March-September)
OARDC, North Central Branch, Castalia, OH1975 – 1980 (6 years)
Average rainfall ~ 23 inches
Toledo and Fulton silty clay soils
Drains 3 ft deep at 40 ft spacing 3.80 inches
Drains 1.3 ft deep at 20 ft spacing 4.98 inches
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SEASONAL SUBSURFACE DRAINAGE FLOWS (March-September)
Tiffin State Hospital Farm, Tiffin, OH1951 – 1966 (16 years)
Average rainfall ~ 20 inchesHaskins, Hoytville, Mermill, Nappanee, and Rawson soils
30 foot drain spacing 2.06 inches60 foot drain spacing 1.32 inches30 ÷ 60 ratio 1.56
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2002
0
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0 30 60 90 120 150 180 210 240 270 300 330 360
Day of Year
Cu
mu
lati
ve
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lum
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(m3 )
0
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Pre
cip
ita
tio
n (
mm
)
a: Subirrigation and free drainage
b: Controlled drainage
c: Free drainage
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0
5
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30N
itra
te-N
lo
ad
(K
g/h
a/y
r)
FreeDrainage
ControlledDrainage
Subirrigation
Corn
Soybean
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