Nitrous oxide emission from feedlot manure and green waste compost applied to Vertisols

Dalal, Ram C., Gibson, Iain R. and Menzies, Neal W. (2009) Nitrous oxide emission from feedlot manure and green waste compost applied to Vertisols. Biology And Fertility of Soils, 45 8: 809-819. doi:10.1007/s00374-009-0394-7


Author Dalal, Ram C.
Gibson, Iain R.
Menzies, Neal W.
Title Nitrous oxide emission from feedlot manure and green waste compost applied to Vertisols
Journal name Biology And Fertility of Soils   Check publisher's open access policy
ISSN 0178-2762
Publication date 2009-09
Year available 2009
Sub-type Article (original research)
DOI 10.1007/s00374-009-0394-7
Volume 45
Issue 8
Start page 809
End page 819
Total pages 10
Editor Paolo Nannipieri
Place of publication Berlin
Publisher Springer
Collection year 2010
Language eng
Subject C1
960912 Urban and Industrial Water Management
050204 Environmental Impact Assessment
Formatted abstract
Application of feedlot manure (FLM) to cropping and grazing soils could provide a valuable N nutrient resource. However, because of its high but variable N concentration, FLM has the potential for environmental pollution of water bodies and N2O emission to the atmosphere. As a potential management tool, we utilised the low-nutrient green waste compost (GWC) to assess its effectiveness in regulating N release and the amount of N2O emission from two Vertisols when both FLM and GWC were applied together. Cumulative soil N2O emission over 32 weeks at 24°C and field capacity (70% water-filled pore space) for a black Vertisol (Udic Paleustert) was 45 mg N2O m−2 from unamended soil. This increased to 274 mg N2O m−2 when FLM was applied at 1 kg m−2 and to 403 mg N2O m−2 at 2 kg m−2. In contrast, the emissions of 60 mg N2O m−2 when the soil was amended with GWC 1 kg m−2 and 48 mg N2O m−2 at 2 kg m−2 were not significantly greater than the unamended soil. Emission from a mixture of FLM and GWC applied in equal amounts (0.5 kg m−2) was 106 mg N2O m−2 and FLM applied at 0.5 kg m−2 and GWC at 1.5 kg GWC m−2 was 117 mg N2O m−2. Although cumulative N2O emissions from an unamended grey Vertisol (Typic Chromustert) were only slightly higher than black Vertisol (57 mg N2O m−2), FLM application at 1 kg m−2 increased N2O emissions by 14 times (792 mg N2O m−2) and at 2 kg m−2 application by 22 times (1260 mg N2O m-2). Application of GWC did not significantly increase N2O emission (99 mg N2O m−2 at 1 kg m−2 and 65 mg N2O m−2 at 2 kg m−2) above the unamended soil. As observed for the black Vertisol, a mixture of FLM (0.5 kg m−2) and GWC (0.5 or 1.5 kg m−2) reduced N2O emission by >50% of that from the FLM alone, most likely by reducing the amount of mineral N (NH4+–N and NO3–N) in the soil, as mineral N in soil and the N2O emission were closely correlated.
Keyword Nitrous oxide emission
Feedlot manure
Green waste compost
Regulating N release
Minteral N
Vertisol
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Agriculture and Food Sciences
 
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Created: Wed, 10 Feb 2010, 10:29:23 EST by Kaye Hunt on behalf of School of Land, Crop and Food Sciences