Labile and stable nitrogen and carbon in mine soil reclaimed with manure-based amendments

Ashlee L. Dere, Richard C. Stehouwer

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Organic C and nutrients in manure can improve degraded mine soil quality if they are retained in the soil. Composting manure or mixing manure with a high C/N ratio material before application could facilitate this improvement. The effects of these manure stabilization techniques on N and C retention in mine soil were investigated in two incubation experiments with six treatments: unamended soil, lime and fertilizer (14.3 Mg ha -1), two rates of composted poultry layer manure (78 and 156 Mg ha -1), and layer manure mixed with paper-mill sludge (PMS) (50 Mg ha -1 manure, 102 and 183 Mg ha -1 PMS) to provide C/N ratios of 20 and 30. In one experiment, amendments were laboratory applied just before incubation; in the other, amendments were field applied 1 yr before incubation. Carbon dioxide evolution and labile N and C were measured during incubation and microbial biomass N was determined at the end of the incubations. In laboratory-amended soil, all treatments produced similar quantities of labile N while compost and manure + PMS treatments resulted in stable soil N pools that were 2.5 to 2.7 times larger than in the unamended soil. In field-amended soils, stable N pools were similarly increased by compost and manure + PMS treatments. Large CO 2 production and microbial biomass N from manure + PMS treatments suggested that rapid microbial turnover of N was an important factor in stabilizing manure N. These results indicate that the combined manure + PMS amendment was as effective as composting in building stable N pools in mine soil.

Original languageEnglish (US)
Pages (from-to)890-897
Number of pages8
JournalSoil Science Society of America Journal
Volume75
Issue number3
DOIs
StatePublished - May 1 2011

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reclaimed soils
animal manures
manure
pulp and paper sludge
carbon
nitrogen
mill
soil
incubation
sludge
composting
carbon nitrogen ratio
compost
composts
microbial biomass
biomass
poultry
soil quality
soil treatment
lime

All Science Journal Classification (ASJC) codes

  • Soil Science

Cite this

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abstract = "Organic C and nutrients in manure can improve degraded mine soil quality if they are retained in the soil. Composting manure or mixing manure with a high C/N ratio material before application could facilitate this improvement. The effects of these manure stabilization techniques on N and C retention in mine soil were investigated in two incubation experiments with six treatments: unamended soil, lime and fertilizer (14.3 Mg ha -1), two rates of composted poultry layer manure (78 and 156 Mg ha -1), and layer manure mixed with paper-mill sludge (PMS) (50 Mg ha -1 manure, 102 and 183 Mg ha -1 PMS) to provide C/N ratios of 20 and 30. In one experiment, amendments were laboratory applied just before incubation; in the other, amendments were field applied 1 yr before incubation. Carbon dioxide evolution and labile N and C were measured during incubation and microbial biomass N was determined at the end of the incubations. In laboratory-amended soil, all treatments produced similar quantities of labile N while compost and manure + PMS treatments resulted in stable soil N pools that were 2.5 to 2.7 times larger than in the unamended soil. In field-amended soils, stable N pools were similarly increased by compost and manure + PMS treatments. Large CO 2 production and microbial biomass N from manure + PMS treatments suggested that rapid microbial turnover of N was an important factor in stabilizing manure N. These results indicate that the combined manure + PMS amendment was as effective as composting in building stable N pools in mine soil.",
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Labile and stable nitrogen and carbon in mine soil reclaimed with manure-based amendments. / Dere, Ashlee L.; Stehouwer, Richard C.

In: Soil Science Society of America Journal, Vol. 75, No. 3, 01.05.2011, p. 890-897.

Research output: Contribution to journalArticle

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