Abstract
Pedological processes such as gleization and organic matter accumulation may affect the vertical distribution of P within agricultural drainage ditch soils. The objective of this study was to assess the vertical distribution of P as a function of horizonation in ditch soils at the University of Maryland Eastern Shore Research Farm in Princess Anne, Maryland. Twenty-one profiles were sampled from 10 agricultural ditches ranging in length from 225 to 550 m. Horizon samples were analyzed for total P; water-extractable P; Mehlich-3 P; acid ammonium oxalate-extractable P, Fe, and Al (Pox, Fe ox, Alox); pH; and organic C (n = 126), Total P ranged from 27 to 4882 mg kg-1, Pox from 4 to 4631 mg kg -1, Mehlich-3 P from 2 to 401 mg kg-1, and water-extractable P from. 0 to 17 mg kg-1. Soil-forming processes that result in differences between horizons had a strong relationship with various P fractions and P sorption capacity. Fibric organic horizons at the ditch soil surface had the greatest mean Pox, Feox, and Alox concentrations of any horizon class. Gleyed A horizons had a mean Feox concentrations 2.6 times lower than dark. A horizons and were significantly lower in total P and Pox. Variation in P due to organic matter accumulation and gleization provide critical insight into short- and long-term dynamics of P in ditch soils and should be accounted for when applying ditch management practices.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1895-1903 |
| Number of pages | 9 |
| Journal | Journal of Environmental Quality |
| Volume | 36 |
| Issue number | 6 |
| DOIs | |
| State | Published - Nov 1 2007 |
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All Science Journal Classification (ASJC) codes
- Environmental Science(all)
- Environmental Chemistry
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Vertical distribution of phosphorus in agricultural drainage ditch soils. / Vaughan, Robert E.; Needelman, Brian A.; Kleinman, Peter J A; Allen, Arthur L.
In: Journal of Environmental Quality, Vol. 36, No. 6, 01.11.2007, p. 1895-1903.Research output: Contribution to journal › Article
TY - JOUR
T1 - Vertical distribution of phosphorus in agricultural drainage ditch soils
AU - Vaughan, Robert E.
AU - Needelman, Brian A.
AU - Kleinman, Peter J A
AU - Allen, Arthur L.
PY - 2007/11/1
Y1 - 2007/11/1
N2 - Pedological processes such as gleization and organic matter accumulation may affect the vertical distribution of P within agricultural drainage ditch soils. The objective of this study was to assess the vertical distribution of P as a function of horizonation in ditch soils at the University of Maryland Eastern Shore Research Farm in Princess Anne, Maryland. Twenty-one profiles were sampled from 10 agricultural ditches ranging in length from 225 to 550 m. Horizon samples were analyzed for total P; water-extractable P; Mehlich-3 P; acid ammonium oxalate-extractable P, Fe, and Al (Pox, Fe ox, Alox); pH; and organic C (n = 126), Total P ranged from 27 to 4882 mg kg-1, Pox from 4 to 4631 mg kg -1, Mehlich-3 P from 2 to 401 mg kg-1, and water-extractable P from. 0 to 17 mg kg-1. Soil-forming processes that result in differences between horizons had a strong relationship with various P fractions and P sorption capacity. Fibric organic horizons at the ditch soil surface had the greatest mean Pox, Feox, and Alox concentrations of any horizon class. Gleyed A horizons had a mean Feox concentrations 2.6 times lower than dark. A horizons and were significantly lower in total P and Pox. Variation in P due to organic matter accumulation and gleization provide critical insight into short- and long-term dynamics of P in ditch soils and should be accounted for when applying ditch management practices.
AB - Pedological processes such as gleization and organic matter accumulation may affect the vertical distribution of P within agricultural drainage ditch soils. The objective of this study was to assess the vertical distribution of P as a function of horizonation in ditch soils at the University of Maryland Eastern Shore Research Farm in Princess Anne, Maryland. Twenty-one profiles were sampled from 10 agricultural ditches ranging in length from 225 to 550 m. Horizon samples were analyzed for total P; water-extractable P; Mehlich-3 P; acid ammonium oxalate-extractable P, Fe, and Al (Pox, Fe ox, Alox); pH; and organic C (n = 126), Total P ranged from 27 to 4882 mg kg-1, Pox from 4 to 4631 mg kg -1, Mehlich-3 P from 2 to 401 mg kg-1, and water-extractable P from. 0 to 17 mg kg-1. Soil-forming processes that result in differences between horizons had a strong relationship with various P fractions and P sorption capacity. Fibric organic horizons at the ditch soil surface had the greatest mean Pox, Feox, and Alox concentrations of any horizon class. Gleyed A horizons had a mean Feox concentrations 2.6 times lower than dark. A horizons and were significantly lower in total P and Pox. Variation in P due to organic matter accumulation and gleization provide critical insight into short- and long-term dynamics of P in ditch soils and should be accounted for when applying ditch management practices.
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U2 - 10.2134/jeq2006.0488
DO - 10.2134/jeq2006.0488
M3 - Article
VL - 36
SP - 1895
EP - 1903
JO - Journal of Environmental Quality
JF - Journal of Environmental Quality
SN - 0047-2425
IS - 6
ER -