Nitrogen and phosphorus availability in composted and uncomposted poultry litter.

Poultry litter applications to land have been based on crop N requirements, resulting in application of P in excess of plant requirements, which may cause degradation of water quality in the Chesapeake Bay watershed. The effect of litter source (the Delmarva Peninsula and Moorefield, West Virginia) and composting of poultry litter on N mineralization and availability of P in two soil types (sandy loam and silt loam) was determined in a controlled environment for 120 d. Nitrogen mineralization (percent total organic N converted to inorganic nitrogen) rates were higher for fresh litter (range of 42 to 64%) than composted litter (range of 1 to 9%). The N mineralization rate of fresh litter from the Delmarva Peninsula was consistently lower than the fresh litter from Moorefield, WV. The N mineralization rate of composted litter from either source was not significantly different for each soil type (7 to 9% in sandy loam and 1 to 5% in silt loam) even though composting conditions were completely different at the two composting facilities. Litter source had a large effect on N mineralization rates of fresh but not composted poultry litter. Composting yielded a more predictable and reliable source of mineralizable N than fresh litter. Water-extractable phosphorus (WEP) was similar in soils amended with composted litter from WV and fresh litter from both sources (approximately 10 to 25 and 2 to 14 mg P kg(-1) for sandy loam and silt loam, respectively). Mehlich 1-extractable phosphorus (MEP) was similar in soils amended with WV fresh litter and composted litter from both sources (approximately 100 to 140 and 60 to 90 mg P kg(-1) for sandy loam and silt loam, respectively). These results suggest that the composting process did not consistently reduce WEP and MEP, and P can be as available in composted poultry litter as in fresh poultry litter.

[1]  M. Cabrera,et al.  Nutrient losses in surface and subsurface flow from pasture applied poultry litter and composted poultry litter , 1998, Nutrient Cycling in Agroecosystems.

[2]  B. Stewart,et al.  Nutrient Management Plan , 2002 .

[3]  T. Hartz,et al.  Nitrogen and Carbon Mineralization Dynamics of Manures and Composts , 2000 .

[4]  Dwayne R. Edwards,et al.  REDUCING PHOSPHORUS RUNOFF AND INHIBITING AMMONIA LOSS FROM POULTRY MANURE WITH ALUMINUM SULFATE , 2000 .

[5]  R. Robitaille,et al.  Soil nitrogen and moisture as influenced by composts and inorganic fertilizer rate , 1998 .

[6]  P. Millner,et al.  Agricultural Uses of Biosolids and Other Recyclable Municipal Residues , 1998 .

[7]  M. Cabrera,et al.  Mineralizable Nitrogen in Broiler Litter: I. Effect of Selected Litter Chemical Characteristics , 1997 .

[8]  H. Janzen,et al.  Long‐Term Fate of Nitrogen from Annual Feedlot Manure Applications , 1996 .

[9]  Rainer Horn,et al.  Handbook of soil science. , 1996 .

[10]  K. H. Tan,et al.  Soil sampling, preparation, and analysis , 1995 .

[11]  A. Hadas,et al.  Nitrogen and Carbon Mineralization Rates of Composted Manures Incubated in Soil , 1994 .

[12]  E. Beauchamp,et al.  Short-term nitrogen dynamics in soil amended with fresh and composted cattle manures , 1994 .

[13]  T. C. Daniel,et al.  Managing Agricultural Phosphorus for Protection of Surface Waters: Issues and Options , 1994 .

[14]  M. Cabrera,et al.  Nitrogen transformations in surface-applied poultry litter : effect of litter physical characteristics , 1993 .

[15]  M. Cabrera,et al.  Nitrogen mineralization in soils amended with composted and uncomposted poultry litter , 1993 .

[16]  E. Paul,et al.  Soil microbiology and biochemistry. , 1998 .

[17]  A. Banin,et al.  Determination of organic matter content in arid-zone soils using a simple loss-on-ignition method , 1989 .

[18]  J. Sims,et al.  Estimating the availability of nitrogen in poultry manure through laboratory and field studies , 1988 .

[19]  Y. Avnimelech,et al.  The Role of Organic Matter in Modern Agriculture , 1986, Developments in Plant and Soil Sciences.

[20]  Y. Henis.  Soil microorganisms, soil organic matter and soil fertility , 1986 .

[21]  F. Broadbent.  Effects of organic matter on nitrogen and phosphorus supply to plants , 1986 .

[22]  P. Adler,et al.  Rapid perchloric acid digest methods for analysis of major elements in plant tissue , 1985 .

[23]  D. Markus,et al.  Automated Analysis of Nitrite, Nitrate, and Ammonium Nitrogen in Soils1 , 1985 .

[24]  B. E. Davies,et al.  Loss-on-Ignition as an Estimate of Soil Organic Matter1 , 1974 .

[25]  I. Cornforth.  Nitrogen Mineralization in West Indian Soils , 1971, Experimental Agriculture.

[26]  J. P. Riley,et al.  A modified single solution method for the determination of phosphate in natural waters , 1962 .