Abstract
Water-extractable P (WEP) in manure is increasingly used as an environmental indicator as it is correlated with P in runoff from soils recently amended with manure. Little information exists on WEP variability across livestock manures. A survey of 140 livestock manures was conducted to assess trends in WEP (dry weight equivalent) related to livestock types and manure storage. Manure WEP ranged widely (0.2-16.8 g kg-1), with swine (Sus scrofa domestica L.) having the highest average concentrations (9.2 g kg -1), followed by turkey (Melleagris gallopavo) (6.3 g kg -1), layer chickens (Gallus gallus domesticus L.) (4.9 g kg -1), dairy cattle (Bos taurus) (4.0 g kg-1), broiler chickens (Gallus gallus domesticus L.) (3.2 g kg-1), and beef cattle (Bos taurus) (23 g kg-1). Manure WEP also differed by general storage system; dry manures contained significantly lower WEP concentrations (3.9 g kg-1) than manure from liquid storage systems (5.4 g kg -1). Within liquid storages, no significant differences in WEP were observed between covered and uncovered storages or between bottom-loaded and top-loaded storages. Dry-matter (DM) content of manure was weakly correlated to WEP across all manures (r = -0.44), but strongly correlated with WEP in liquid swine manure (r = -0.87) and dairy manure (r = -0.72), suggesting dissolution of phosphate compounds as manure solids are diluted in storage. Varying positive correlations were observed between WEP in manure and water-extractable Ca, Mg, and Fe, or total P, depending on livestock category. Results of this study show that livestock manure can be categorized by WEP, a key step toward differential weighting of agricultural P sources in P site assessment indices.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 701-708 |
| Number of pages | 8 |
| Journal | Soil Science Society of America Journal |
| Volume | 69 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 1 2005 |
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- Soil Science
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Survey of water-extractable phosphorus in livestock manures. / Kleinman, Peter J.A.; Wolf, Ann M.; Sharpley, Andrew N.; Beegle, Douglas B.; Saporito, Lou S.
In: Soil Science Society of America Journal, Vol. 69, No. 3, 01.05.2005, p. 701-708.Research output: Contribution to journal › Review article
TY - JOUR
T1 - Survey of water-extractable phosphorus in livestock manures
AU - Kleinman, Peter J.A.
AU - Wolf, Ann M.
AU - Sharpley, Andrew N.
AU - Beegle, Douglas B.
AU - Saporito, Lou S.
PY - 2005/5/1
Y1 - 2005/5/1
N2 - Water-extractable P (WEP) in manure is increasingly used as an environmental indicator as it is correlated with P in runoff from soils recently amended with manure. Little information exists on WEP variability across livestock manures. A survey of 140 livestock manures was conducted to assess trends in WEP (dry weight equivalent) related to livestock types and manure storage. Manure WEP ranged widely (0.2-16.8 g kg-1), with swine (Sus scrofa domestica L.) having the highest average concentrations (9.2 g kg -1), followed by turkey (Melleagris gallopavo) (6.3 g kg -1), layer chickens (Gallus gallus domesticus L.) (4.9 g kg -1), dairy cattle (Bos taurus) (4.0 g kg-1), broiler chickens (Gallus gallus domesticus L.) (3.2 g kg-1), and beef cattle (Bos taurus) (23 g kg-1). Manure WEP also differed by general storage system; dry manures contained significantly lower WEP concentrations (3.9 g kg-1) than manure from liquid storage systems (5.4 g kg -1). Within liquid storages, no significant differences in WEP were observed between covered and uncovered storages or between bottom-loaded and top-loaded storages. Dry-matter (DM) content of manure was weakly correlated to WEP across all manures (r = -0.44), but strongly correlated with WEP in liquid swine manure (r = -0.87) and dairy manure (r = -0.72), suggesting dissolution of phosphate compounds as manure solids are diluted in storage. Varying positive correlations were observed between WEP in manure and water-extractable Ca, Mg, and Fe, or total P, depending on livestock category. Results of this study show that livestock manure can be categorized by WEP, a key step toward differential weighting of agricultural P sources in P site assessment indices.
AB - Water-extractable P (WEP) in manure is increasingly used as an environmental indicator as it is correlated with P in runoff from soils recently amended with manure. Little information exists on WEP variability across livestock manures. A survey of 140 livestock manures was conducted to assess trends in WEP (dry weight equivalent) related to livestock types and manure storage. Manure WEP ranged widely (0.2-16.8 g kg-1), with swine (Sus scrofa domestica L.) having the highest average concentrations (9.2 g kg -1), followed by turkey (Melleagris gallopavo) (6.3 g kg -1), layer chickens (Gallus gallus domesticus L.) (4.9 g kg -1), dairy cattle (Bos taurus) (4.0 g kg-1), broiler chickens (Gallus gallus domesticus L.) (3.2 g kg-1), and beef cattle (Bos taurus) (23 g kg-1). Manure WEP also differed by general storage system; dry manures contained significantly lower WEP concentrations (3.9 g kg-1) than manure from liquid storage systems (5.4 g kg -1). Within liquid storages, no significant differences in WEP were observed between covered and uncovered storages or between bottom-loaded and top-loaded storages. Dry-matter (DM) content of manure was weakly correlated to WEP across all manures (r = -0.44), but strongly correlated with WEP in liquid swine manure (r = -0.87) and dairy manure (r = -0.72), suggesting dissolution of phosphate compounds as manure solids are diluted in storage. Varying positive correlations were observed between WEP in manure and water-extractable Ca, Mg, and Fe, or total P, depending on livestock category. Results of this study show that livestock manure can be categorized by WEP, a key step toward differential weighting of agricultural P sources in P site assessment indices.
UR - http://www.scopus.com/inward/record.url?scp=18644378527&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=18644378527&partnerID=8YFLogxK
U2 - 10.2136/sssaj2004.0099
DO - 10.2136/sssaj2004.0099
M3 - Review article
AN - SCOPUS:18644378527
VL - 69
SP - 701
EP - 708
JO - Soil Science Society of America Journal
JF - Soil Science Society of America Journal
SN - 0361-5995
IS - 3
ER -