Benefits of Gypsum for Soil and Water Mangement

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Benefits of Gypsum for Soil and Water Mangement

• L. Darrell Norton, Soil Scientist
• USDA-ARS National Soil Erosion Research
  Laboratory
• Purdue University, West Lafayette, IN

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The Problem Water/Air Entry
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DeWitt, Iowa Site Fayette silty clay loam
0.40
80.00
0.35
0.30
60.00
0.25
soil loss g/m2s
0.20
40.00
mm/h
0.15
0.10
20.00
0.05
0.00
0.00
5
10
15
20
25
30
35
40
45
50
55
60
Duration min
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Fayette PAMFBCBA Treatment
0.40
80.00
0.35
0.30
60.00
0.25
soil loss g/m2s
0.20
40.00
mm/h
0.15
0.10
20.00
0.05
0.00
0.00
5
10
15
20
25
30
35
40
45
50
55
60
Duration min
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Catlin Gypsum PAM
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TIME 0 min
TIME 1 hour
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Introduction surface acidity
Nitrogen Applied T/sq. mile
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