Objective 2.1
Manipulating N inputs


Leader: Dr Cecile de Klein (AgResearch)
NZAGRC funding: April 2010 - June 2014 


This objective investigates ways to manipulate the N inputs into the pastoral system though plant breeding/selection and plant management options.


 Download Objective 2.1 2010/11 (0.19MB) 



Objective 2.2
Manipulating nitrification processes


Leader: Professor HJ Di (Lincoln University)
NZAGRC funding: April 2010 - June 2014 


Comprehensive research undertaken in NZ has already demonstrated that nitrification inhibitors (NI) can provide an effective method for reducing N2O emissions from urine patches deposited on pasture. Research funded by NZAGRC will address the challenge of optimising inhibitor use so that their effectiveness and longevity is increased.


 Download Objective 2.2 2010/11 (0.18MB)  



Objective 2.3
Manipulating denitrification processes


Leader: Dr Surinder Saggar (Landcare Research)
NZAGRC funding: April 2010 - June 2014 


Denitrification is the primary process of N2O production in New Zealand pasture soils. However, we lack a comprehensive, quantitative understanding of denitrification rates and controlling factors across agrosystems. This Objective will test and improve the latest microbiological and tracer techniques to identify pathways for reducing N2O production during denitrification and develop mitigation technologies that reduce N2O emissions by lowering N2O/N2 ratio during denitrification.


 Download Objective 2.3 2010/11 (0.19MB)  



Objective 2.4
N2O emissions and soil water status


Leader: Dr Steve Thomas (Plant & Food Research)
NZAGRC funding: April 2010 - June 2013 


The aim of this research is to develop better fundamental understanding of the role that soil physical characteristics and changing soil water conditions affect N2O emissions, and use this knowledge to produce a scientifically robust and easily measurable relationship between soil water or aeration status and N2O. In turn, we will use this knowledge to help refine on-farm grazing and soil water management decision-making to minimise N2O emissions.


 Download Objective 2.4 2010/11 (0.19MB)