Effect of Poultry Diet on Phosphorus in Runoff from Soils Amended with Poultry Manure and Compost
P. A. Vadasa,*,
J. J. Meisingerb,
L. J. Sikorab,
J. P. McMurtryb and
A. E. Seftonc
a PSWMRU, Building 3702, Curtin Road, University Park, PA 16802
b USDA-ARS-ANRI-GBL, B-200, BARC-East, 10300 Baltimore Avenue, Beltsville, MD 20705
c Alltech Canada, 20 Cutten Place, Guelph, ON, Canada N1G 4Z7

View larger version (29K):
[in a new window]
|
Fig. 1. Relationships between (a) molybdate-reactive phosphorus (MRP) and total P in runoff, and (b) sediment concentration and total P in runoff from all soil boxes during 30 min of runoff.
|
|

View larger version (26K):
[in a new window]
|
Fig. 2. (a) Average runoff molybdate-reactive phosphorus (MRP) and total P concentrations from background soil boxes, and average runoff MRP concentrations from (b) soil boxes with manure and (c) compost treatments during 30 min of runoff.
|
|

View larger version (20K):
[in a new window]
|
Fig. 3. Relationship between water-extractable P applied to soil boxes in manures and composts and molybdate-reactive phosphorus (MRP) in runoff from the same soil boxes.
|
|
Copyright © 2004 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.