|
|
||||||||
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
* Corresponding author (Peter.Vadas{at}ars.usda.gov).
Received for publication June 25, 2003. Phosphorus in runoff from fields where poultry litter is surface-applied is an environmental concern. We investigated the effect of adding phytase and reducing supplemental P in poultry diets and composting poultry manures, with and without Fe and Al amendments, on P in manures, composts, and runoff. We used four diets: normal (no phytase) with 0.4% supplemental P, normal + phytase, phytase + 0.3% P, and phytase + 0.2% P. Adding phytase and decreasing supplemental P in diets reduced total P but increased water-extractable P in manure. Compared with manures, composting reduced both total P, due to dilution of manure with woodchips and straw, and water-extractable P, but beyond a dilution effect so that the ratio of water-extractable P to total P was less in compost than manure. Adding Fe and Al during composting did not consistently change total P or water-extractable P. Manures and composts were surface-applied to soil boxes at a rate of 50 kg total P ha1 and subjected to simulated rainfall, with runoff collected for 30 min. For manures, phytase and decreased P in diets had no significant effect on total P or molybdate-reactive P loads (kg ha1) in runoff. Composting reduced total P and molybdate-reactive P loads in runoff, and adding Fe and Al to compost reduced total P but not molybdate-reactive P loads in runoff. Molybdate-reactive P in runoff (mg box1) was well correlated to water-extractable P applied to boxes (mg box1) in manures and composts. Therefore, the final environmental impact of dietary phytase will depend on the management of poultry diets, manure, and farm-scale P balances.
Related articles in JEQ:
This article has been cited by other articles:
![]() |
U. P. P. Pillai, V. Manoharan, A. Lisle, X. Li, and W. Bryden Phytase Supplemented Poultry Diets Affect Soluble Phosphorus and Nitrogen in Manure and Manure-amended Soil J. Environ. Qual., June 23, 2009; 38(4): 1700 - 1708. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. B. Watts and H. A. Torbert Impact of Gypsum Applied to Grass Buffer Strips on Reducing Soluble P in Surface Water Runoff J. Environ. Qual., May 20, 2009; 38(4): 1511 - 1517. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. C. Smith, J. W. White, and F. J. Coale Evaluation of Phosphorus Source Coefficients as Predictors of Runoff Phosphorus Concentrations J. Environ. Qual., February 6, 2009; 38(2): 587 - 597. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. B. Leytem, G. P. Widyaratne, and P. A. Thacker Phosphorus Utilization and Characterization of Ileal Digesta and Excreta from Broiler Chickens Fed Diets Varying in Cereal Grain, Phosphorus Level, and Phytase Addition Poult. Sci., December 1, 2008; 87(12): 2466 - 2476. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. B. Leytem, P. Kwanyuen, and P. Thacker Nutrient Excretion, Phosphorus Characterization, and Phosphorus Solubility in Excreta from Broiler Chicks Fed Diets Containing Graded Levels of Wheat Distillers Grains with Solubles Poult. Sci., December 1, 2008; 87(12): 2505 - 2511. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. B. Leytem, P. W. Plumstead, R. O. Maguire, P. Kwanyuen, J. W. Burton, and J. Brake Interaction of Calcium and Phytate in Broiler Diets. 2. Effects on Total and Soluble Phosphorus Excretion Poult. Sci., March 1, 2008; 87(3): 459 - 467. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. W. Plumstead, H. Romero-Sanchez, R. O. Maguire, A. G. Gernat, and J. Brake Effects of Phosphorus Level and Phytase in Broiler Breeder Rearing and Laying Diets on Live Performance and Phosphorus Excretion Poult. Sci., February 1, 2007; 86(2): 225 - 231. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. B. Leytem, P. W. Plumstead, R. O. Maguire, P. Kwanyuen, and J. Brake What Aspect of Dietary Modification in Broilers Controls Litter Water-Soluble Phosphorus: Dietary Phosphorus, Phytase, or Calcium? J. Environ. Qual., January 25, 2007; 36(2): 453 - 463. [Abstract] [Full Text] [PDF] |
||||
![]() |
H. A. Elliott, R. C. Brandt, P. J. A. Kleinman, A. N. Sharpley, and D. B. Beegle Estimating Source Coefficients for Phosphorus Site Indices J. Environ. Qual., October 27, 2006; 35(6): 2195 - 2201. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. B. Leytem, D. R. Smith, T. J. Applegate, and P. A. Thacker The Influence of Manure Phytic Acid on Phosphorus Solubility in Calcareous Soils Soil Sci. Soc. Am. J., August 3, 2006; 70(5): 1629 - 1638. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. J. A. Kleinman, M. S. Srinivasan, C. J. Dell, J. P. Schmidt, A. N. Sharpley, and R. B. Bryant Role of Rainfall Intensity and Hydrology in Nutrient Transport via Surface Runoff. J. Environ. Qual., July 1, 2006; 35(4): 1248 - 1259. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. B. DeLaune, P. A. Moore Jr., and J. L. Lemunyon Effect of chemical and microbial amendment on phosphorus runoff from composted poultry litter. J. Environ. Qual., July 1, 2006; 35(4): 1291 - 1296. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. A. Vadas and P. J. A. Kleinman Effect of Methodology in Estimating and Interpreting Water-Extractable Phosphorus in Animal Manures J. Environ. Qual., May 31, 2006; 35(4): 1151 - 1159. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. O. Maguire, P. W. Plumstead, and J. Brake Impact of Diet, Moisture, Location, and Storage on Soluble Phosphorus in Broiler Breeder Manure J. Environ. Qual., April 3, 2006; 35(3): 858 - 865. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. O. Maguire, Z. Dou, J. T. Sims, J. Brake, and B. C. Joern Dietary Strategies for Reduced Phosphorus Excretion and Improved Water Quality J. Environ. Qual., November 7, 2005; 34(6): 2093 - 2103. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. M. McGrath, J. T. Sims, R. O. Maguire, W. W. Saylor, C. R. Angel, and B. L. Turner Broiler Diet Modification and Litter Storage: Impacts on Phosphorus in Litters, Soils, and Runoff J. Environ. Qual., September 8, 2005; 34(5): 1896 - 1909. [Abstract] [Full Text] [PDF] |
||||
![]() |
L. J. Sikora and N. K. Enkiri Comparison of Phosphorus Uptake from Poultry Litter Compost with Triple Superphosphate in Codorus Soil Agron. J., April 27, 2005; 97(3): 668 - 673. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. J. A. Kleinman, A. M. Wolf, A. N. Sharpley, D. B. Beegle, and L. S. Saporito Survey of Water-Extractable Phosphorus in Livestock Manures Soil Sci. Soc. Am. J., April 11, 2005; 69(3): 701 - 708. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. O. Maguire, J. T. Sims, and T. J. Applegate Phytase Supplementation and Reduced-Phosphorus Turkey Diets Reduce Phosphorus Loss in Runoff following Litter Application J. Environ. Qual., January 1, 2005; 34(1): 359 - 369. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. B. DeLaune, P. A. Moore Jr., D. K. Carman, A. N. Sharpley, B. E. Haggard, and T. C. Daniel Development of a Phosphorus Index for Pastures Fertilized with Poultry Litter--Factors Affecting Phosphorus Runoff J. Environ. Qual., November 1, 2004; 33(6): 2183 - 2191. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Agronomy Journal | Crop Science | |||
| Journal of Natural Resources and Life Sciences Education |
Vadose Zone Journal | ||||
| Soil Science Society of America Journal | Journal of Plant Registrations | The Plant Genome | |||