Last Modified

• March 21, 2019

Creator

• DeBerardinis, Jeffrey T.
  • Affiliation: Gillings School of Global Public Health, Department of Environmental Sciences and Engineering

Abstract

• The swine industry has expanded rapidly in North Carolina over the last two decades. Animals are raised in confined facilities where waste is flushed into open-air lagoons and the liquid phase is land-applied to receiving fields as an organic fertilizer. The post-application fate has not been fully documented. Therefore, on three occasions I experimentally applied liquid swine waste at typical doses (40 to 130 kg N ha-2) to defined plots in an active spray field on a representative North Carolina swine production facility and constructed an N mass balance for a 14 to 18 d period. Most of the N (52%) was assimilated into plants, while surprisingly little (9%) was volatilized. Microbial immobilization accounted for 10% of the applied N, while 12% migrated below the active soil zone (surface 20 cm) and was presumably lost to groundwater. The soil storage term averaged 16%, while the denitrification sink was inconsequential (<1%).

Date of publication

• May 2006

DOI

• https://doi.org/10.17615/hdp9-6769

Resource type

• Masters Thesis

Rights statement

• In Copyright

Advisor

• Whalen, Stephen

Degree granting institution

• University of North Carolina at Chapel Hill

Language

• English

Access

• Open access

Parents:

This work has no parents.

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