000189417 001__ 189417
000189417 005__ 20170828031501.0
000189417 037__ $$a1124-2016-91954
000189417 041__ $$aen_US
000189417 084__ $$aQ53
000189417 084__ $$aQ57
000189417 245__ $$aMitigation and Heterogeneity in Management Practices on New Zealand Dairy Farms
000189417 260__ $$c2013-10
000189417 269__ $$a2013-10
000189417 300__ $$a44
000189417 336__ $$aWorking or Discussion Paper
000189417 490__ $$aWorking Papers
000189417 520__ $$aPastoral farming can result in adverse environmental effects such as nitrogen leaching
and greenhouse gas emissions. However, the cost of mitigation and hence the socially
appropriate level of tolerance for environmental effects is still unclear. Research to date within
New Zealand has either estimated the costs of specific mitigation technologies or used
simulation modelling at a farm scale. This is limited for two key reasons: neither approach uses
data from actual implementation of technologies and practices on real farms and hence costs are
speculative; and both largely treat farms as homogenous when in reality they vary greatly. We use
data on 264 farms to estimate a distribution of “farm management” residuals in how efficiently
nitrogen leaching and greenhouse gas are used to generate production. We interpret this
distribution as a measure of the potential for feasible, relatively low-cost mitigation to take place
as less efficient farmers move toward existing best practice.
We can explain only 48% percent of the OVERSEER-modelled variation in New Zealand
dairy farms’ nitrogen use efficiency based on geophysical factors, specific mitigation technologies
and practices that move emissions across farms such as wintering off animals. This suggests a
potentially large role for management factors and farmer skill. In contrast, OVERSEER-modelled
variation in greenhouse gas use efficiency is more easily explained by the observable factors
(73%) but the potential for mitigation through management changes is still not insignificant.
Using management practices that are already in commercial use, this first study using this
approach suggests that improvements in nitrogen use efficiency may be able to reduce leaching
by more than 30 percent, while improvements in greenhouse gas use efficiency may be able to
reduce emissions by more than 15 percent; the potential varies considerably across farms.
000189417 542__ $$fLicense granted by Mallory Pagel (pagel107@umn.edu) on 2014-11-13T15:57:32Z (GMT):

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000189417 650__ $$aEnvironmental Economics and Policy
000189417 650__ $$aLand Economics/Use
000189417 6531_ $$aMarginal abatement cost curves
000189417 6531_ $$aclimate change
000189417 6531_ $$aagriculture
000189417 6531_ $$agreenhouse gas
000189417 6531_ $$aheterogeneity
000189417 6531_ $$aleaching
000189417 6531_ $$amitigation
000189417 6531_ $$anitrogen
000189417 6531_ $$ause efficiency
000189417 700__ $$aAnastasiadis, Simon
000189417 700__ $$aKerr, Suzi
000189417 8564_ $$s1003879$$uhttp://ageconsearch.umn.edu/record/189417/files/13_11.pdf
000189417 887__ $$ahttp://purl.umn.edu/189417
000189417 909CO $$ooai:ageconsearch.umn.edu:189417$$qGLOBAL_SET
000189417 912__ $$nSubmitted by Mallory Pagel (pagel107@umn.edu) on 2014-11-13T16:00:29Z
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  Previous issue date: 2013-10
000189417 982__ $$gMotu Economic and Public Policy Research>Working Papers
000189417 980__ $$a1124