Journal article
Stratification of solids, nitrogen and phosphorus in swine manure in deep pits under slatted floors
Bioresource technology, Vol.83(3), pp.203-211
2002
Handle:
https://hdl.handle.net/2376/115639
PMID: 12094795
Abstract
Manure slurries stored in pits under slatted floors of both finishing and nursery barns were sampled at four different depths to study stratifications of total solids (TS) and nutrients (nitrogen and phosphorus), and to determine the relationship between the stratification of TS and nutrients. The results obtained can be used to improve the management and handling of swine manure in the under-slat storage pits. A management scheme that can be adopted for both the finishing and the nursery barns' pits is the layer-by-layer harvesting of the manure. The thinner manure, which is lower in nutrients, can be spread on land near the production units in larger volumes or it may pumped to land remote from the production units without causing many clogging problems. The thicker manure, higher in nutrients, can be transported to land further away and spread in smaller volumes. The TS content of each stratum can be used to accurately estimate the nitrogen and phosphorus levels in the respective strata so that application rates can easily be adjusted accordingly during the time of land application.
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Details
- Title
- Stratification of solids, nitrogen and phosphorus in swine manure in deep pits under slatted floors
- Creators
- Pius M Ndegwa - Department of Biosystems and Agricultural Engineering, Oklahoma State University, 120 Agricultural Hall, Stillwater, OK 74078, USAJun Zhu - Department of Biosystems and Agricultural Engineering, Southern Research and Outreach Center, University of Minnesota, 35838 120th Street, Waseca, MN 56093, USAAncheng Luo - Department of Biosystems and Agricultural Engineering, Southern Research and Outreach Center, University of Minnesota, 35838 120th Street, Waseca, MN 56093, USA
- Publication Details
- Bioresource technology, Vol.83(3), pp.203-211
- Academic Unit
- Biological Systems Engineering, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900547304101842
- Language
- English
- Resource Type
- Journal article