New Zealand Journal of Agricultural Research abstracts
Control of gaseous emissions of ammonia and hydrogen sulphide from
cow manure by use of natural materials
J. Luo1
M. Kulasegarampillai1,2
N. Bolan2
A. Donnison1
1Land and Environmental
Management
AgResearch Ltd
Private Bag 3123
Hamilton, New Zealand
email: jiafa.luo@agresearch.co.nz
2Massey University
P.O. Box 11 222
Palmerston North, New Zealand
Abstract Winter management practices involving the
use of stand-off pads to reduce problems due to cows grazing on wet
soils may require storage of cow manure for extended periods prior to
field application. Gaseous losses of nitrogen (N) and sulphur (S) from
stored cow manure can be considerable, and these gases are offensive
and undesirable. Laboratory incubation studies were conducted to
measure gaseous loss of ammonia (NH3) and hydrogen sulphide
(H2S) from stored cow manure under aerobic and anaerobic
conditions. The potential of adding a range of natural materials,
including soil, untreated pine bark, sawdust and wood savings, to the
manure to reduce these gaseous emissions was investigated. Aerobic
incubation of manure resulted in a higher emission of NH3
than anaerobic incubation, while anaerobic incubation resulted in
higher emissions of H2S. The effectiveness of natural
materials in reducing losses of NH3 was investigated under
anaerobic conditions, and pine bark was found to be the most effective.
However, all materials reduced NH3 to some degree.
Therefore, the addition of natural materials, such as pine bark and
soil, as amendments to cow manure during storage offers potential for
reducing emissions of NH3 and H2S.
Keywords ammonia; hydrogen sulphide; cow manure;
emission of gases; odours
A04059; Received 10 June 2004; accepted 23 August 2004; Online
publication date 15 December 2004
New Zealand Journal of Agricultural Research, 2004, Vol. 47:
545–556
0028–8233/04/4704–0545 © The Royal Society of New Zealand 2004
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