Source: AGRICULTURAL RESEARCH SERVICE submitted to
PELLETING POULTRY LITTER AND ENVIRONMENTAL CONSEQUENCES
Sponsoring Institution
Agricultural Research Service/USDA
Project Status
TERMINATED
Funding Source
Reporting Frequency
Annual
Accession No.
0409056
Grant No.
(N/A)
Project No.
6226-63000-001-03T
Proposal No.
(N/A)
Multistate No.
(N/A)
Program Code
(N/A)
Project Start Date
Jan 1, 2005
Project End Date
Mar 31, 2007
Grant Year
(N/A)
Project Director
DONOGHUE A M
Recipient Organization
AGRICULTURAL RESEARCH SERVICE
(N/A)
FAYETTEVILLE,AR 72701
Performing Department
(N/A)
Non Technical Summary
(N/A)
Animal Health Component
60%
Research Effort Categories
Basic
40%
Applied
60%
Developmental
0%
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
1333210200050%
1333220200050%
Goals / Objectives
To evaluate phosphorus, nitrogen, and pathogen loss from pastures and urban lawns receiving poultry litters, pelleted poultry litters, and commercial fertilizers applied at equivalent total nitrogen and phosphorus rates. The specific objectives are: 1) to evaluate the effect of pelleting on water extractable phosphorus and metal content in poultry litters, 2) evaluate the effect of pelleting on phosphorus, nitrogen, metal and pathogen transport during rainfall simulations on grass plots, and 3) determine factors controlling phosphorus solubility in water extracts and transport during rainfall simulations on grass plots.
Project Methods
The approach will consist of working with an operating pelleting and granulating plant to sample poultry litter before and after it is pelleted--it is extremely important that the same batch of litter is collected pre- and post-pelleting. After litter pelleting and collection, we will evaluate the content of water extractable phosphorus and metals in the various litters. The litters will be extracted at different poultry litter (dry weight equivalent) to water ratios, and water extractable constituents compared. The poultry litters will then be applied to small fescue, clover, and bermuda grass plots at equivalent total nitrogen and total phosphorus rates. Rainfall simulations will be conducted immediately following litter application, one week later, and one month later. Composite water samples will be collected, as well as plot hydrology data. Water samples will be analyzed for phosphorus, nitrogen, metals, and coliform bacteria. Statistical comparisons and correlations will be made to determine what factors are controlling phosphorus loss from poultry litter that has been surface applied to grass plots.

Progress 01/01/05 to 03/31/07

Outputs
Progress Report Objectives (from AD-416) To evaluate phosphorus, nitrogen, and pathogen loss from pastures and urban lawns receiving poultry litters, pelleted poultry litters, and commercial fertilizers applied at equivalent total nitrogen and phosphorus rates. The specific objectives are: 1) to evaluate the effect of pelleting on water extractable phosphorus and metal content in poultry litters, 2) evaluate the effect of pelleting on phosphorus, nitrogen, metal and pathogen transport during rainfall simulations on grass plots, and 3) determine factors controlling phosphorus solubility in water extracts and transport during rainfall simulations on grass plots. Approach (from AD-416) The approach will consist of working with an operating pelleting and granulating plant to sample poultry litter before and after it is pelleted--it is extremely important that the same batch of litter is collected pre- and post-pelleting. After litter pelleting and collection, we will evaluate the content of water extractable phosphorus and metals in the various litters. The litters will be extracted at different poultry litter (dry weight equivalent) to water ratios, and water extractable constituents compared. The poultry litters will then be applied to small fescue, clover, and bermuda grass plots at equivalent total nitrogen and total phosphorus rates. Rainfall simulations will be conducted immediately following litter application, one week later, and one month later. Composite water samples will be collected, as well as plot hydrology data. Water samples will be analyzed for phosphorus, nitrogen, metals, and coliform bacteria. Statistical comparisons and correlations will be made to determine what factors are controlling phosphorus loss from poultry litter that has been surface applied to grass plots. Significant Activities that Support Special Target Populations This report serves to document research conducted under a trust agreement between U.S. Poultry & Egg Association and ARS. Additional details of research can be found in the report for the in-house associated project 6226-63000-001-00D, Poultry Manure Management Strategies to Reduce Non- Point Source Phosphorus Pollution. This grant was funded in 2005, and the various components of this project have been completed. The laboratory component evaluated water extractable phosphorus on raw poultry litter, ground poultry litter, granulated poultry litter, granulated poultry litter plus urea, and granulated poultry plus urea and a nitrification inhibitor from Mars-Mineral, Inc., Pennsylvania. A local granulated plant (Organic-Gro, Inc., Bentonville, Arkansas) also provided the ARS with raw poultry litter and granulated poultry litter plus feather mill. As previously observed, water extractable phosphorus content increased with an increase in extraction ratio (water to poultry litter). The granulation process affected water extractable phosphorus at the lower ratios, but this process does not increase the total amount of water extractable phosphorus in poultry litter. A soil incubation and rainfall simulation study was completed within the project timeline, and specific results are available in the final report submitted to US Poultry and Egg Association in March 2007. This project has been completed and all funds expended.

Impacts
(N/A)

Publications


    Progress 10/01/05 to 09/30/06

    Outputs
    Progress Report 4d Progress report. This report serves to document research conducted under a trust agreement between U.S. Poultry & Egg Association and ARS. Additional details of research can be found in the report for the parent project 6226-63000-001- 00D Poultry Manure Management Strategies to Reduce Non-Point Source Phosphorus Pollution. This grant was funded in 2005, and the laboratory component of this project has been completed. The laboratory component evaluated water extractable phosphorus on raw poultry litter, ground poultry litter, granulated poultry litter, granulated poultry litter plus urea, and granulated poultry plus urea and a nitrification inhibitor from Mars-Mineral, Inc., Pennsylvania. A local granulated plant (Organic-Gro, Inc., Bentonville, Arkansas) also provided the ARS with raw poultry litter and granulated poultry litter plus feather mill. As previously observed, water extractable phosphorus content increased with an increase in extraction ratio (water to poultry litter). The granulation process affected water extractable phosphorus at the lower ratios, but this process does not increase the total amount of water extractable phosphorus in poultry litter. A soil incubation study was completed over the last year, and rainfall simulations on field-plots are scheduled for summer 2006.

    Impacts
    (N/A)

    Publications


      Progress 10/01/04 to 09/30/05

      Outputs
      4d Progress report. This report serves to document research conducted under a trust agreement between U.S. Poultry & Egg Association and ARS. Additional details of research can be found in the report for the parent project 6226-63000-001- 00D Poultry Manure Management Strategies to Reduce Non-Point Source Phosphorus Pollution. This grant was funded earlier this year; hence, at the time of writing this progress report only the laboratory component of this experiment has been completed. The laboratory component evaluated water extractable phosphorus on raw poultry litter, ground poultry litter, granulated poultry litter, granulated poultry litter plus urea, and granulated poultry plus urea and a nitrification inhibitor from Mars- Mineral, Inc., Pennsylvania. A local granulated plant (Organic-Gro, Inc., Bentonville, Arkansas) also provided the ARS with raw poultry litter and granulated poultry litter plus feather mill. The granulated poultry litters had greater water extractable phosphorus than unprocessed poultry; a subsequent experiment showed this effect was primarily due to the heating process. This lab experiment also identified an increase in water extractable phosphorus content of the various raw and processed litters when the extraction ratio (poultry litter to water) increased.

      Impacts
      (N/A)

      Publications