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Nitrogen mineralization in mine spoils amended with poultry manure and paper mill sludge

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Abstract:

Two environmental problems in Pennsylvania include abandoned coal mines and excess animal manure production. A field experiment is testing two approaches to using poultry layer manure for mine reclamation: composting and adding paper mill sludge to fresh manure. Large quantities of manure are needed to supply adequate carbon, however, increasing the risk of nutrient leaching. I am conducting a lab incubation experiment to determine the nitrogen mineralization potential of these approaches. Treatments include a lime and fertilizer control, two rates of composted poultry manure (78 and 156 Mg ha-1 dry weight), and two blends of fresh poultry manure (60 Mg ha-1 dry weight) mixed with paper mill sludge (90 and 170 Mg ha-1) to achieve C:N ratios of 20:1 and 30:1. A “time zero” set of samples represents soil conditions immediately following amendment application and “year one” samples represent field conditions one year after implementation. All samples are repeatedly leached for one year. “Time zero” samples exhibit a pulse of typically 3000 mg labile N/kg soil within the first 20 days. Thereafter and in all “year one” samples, each leaching event produced <500 mg N/kg soil for all treatments. Cumulative labile N through day 60 in the “time zero” samples shows no difference among treatments (average 5800 mg N/kg soil). In the “one year” soils, however, more labile N is leached from the two manure amendments than all other treatments. Results of this research will help establish appropriate manure-based reclamation rates by quantifying the fate and flux of nitrogen.
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Association:
Name: SOIL AND WATER CONSERVATION SOCIETY
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http://www.swcs.org


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URL: http://citation.allacademic.com/meta/p235554_index.html
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MLA Citation:

Dere, Ashlee., Stehouwer, Richard., Lewis, David. and Aboukila, Emad. "Nitrogen mineralization in mine spoils amended with poultry manure and paper mill sludge" Paper presented at the annual meeting of the SOIL AND WATER CONSERVATION SOCIETY, TBA, Tucson, Arizona, Jul 26, 2008 <Not Available>. 2013-12-14 <http://citation.allacademic.com/meta/p235554_index.html>

APA Citation:

Dere, A. L., Stehouwer, R. , Lewis, D. and Aboukila, E. , 2008-07-26 "Nitrogen mineralization in mine spoils amended with poultry manure and paper mill sludge" Paper presented at the annual meeting of the SOIL AND WATER CONSERVATION SOCIETY, TBA, Tucson, Arizona <Not Available>. 2013-12-14 from http://citation.allacademic.com/meta/p235554_index.html

Publication Type: Oral Presentation
Abstract: Two environmental problems in Pennsylvania include abandoned coal mines and excess animal manure production. A field experiment is testing two approaches to using poultry layer manure for mine reclamation: composting and adding paper mill sludge to fresh manure. Large quantities of manure are needed to supply adequate carbon, however, increasing the risk of nutrient leaching. I am conducting a lab incubation experiment to determine the nitrogen mineralization potential of these approaches. Treatments include a lime and fertilizer control, two rates of composted poultry manure (78 and 156 Mg ha-1 dry weight), and two blends of fresh poultry manure (60 Mg ha-1 dry weight) mixed with paper mill sludge (90 and 170 Mg ha-1) to achieve C:N ratios of 20:1 and 30:1. A “time zero” set of samples represents soil conditions immediately following amendment application and “year one” samples represent field conditions one year after implementation. All samples are repeatedly leached for one year. “Time zero” samples exhibit a pulse of typically 3000 mg labile N/kg soil within the first 20 days. Thereafter and in all “year one” samples, each leaching event produced <500 mg N/kg soil for all treatments. Cumulative labile N through day 60 in the “time zero” samples shows no difference among treatments (average 5800 mg N/kg soil). In the “one year” soils, however, more labile N is leached from the two manure amendments than all other treatments. Results of this research will help establish appropriate manure-based reclamation rates by quantifying the fate and flux of nitrogen.

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