Dynamics of CO2 and N2O Emissions in the Wheat System: Continuous Automated Irga Monitoring Study.

An accurate assessment of diurnal, event-driven, and seasonal dynamics in soil greenhouse gas emissions is required for predicting the effects of agricultural management practices on global climate change. The effects of N application rate, glucose treatment on CO₂ and N₂O emissions were evaluated in the wheat cropping system in the microplot experiment with continuous IRGA monitoring through the system of 64 automatic chambers. Emissions of N₂O decreased over time during the months of April to July, likely due to reduction in levels of N in soil as a result of plant uptake and leaching. Emissions of CO₂ increased with the increase in daily temperatures from April to June and July. Continuous monitoring of CO₂ and N₂O emissions will continue over the summer and fall of 2012, and the specific pools of N₂O resulting from nitrification and denitrification processes in the irrigated treatments and N fertilization will be evaluated through acetylene inhibition technique in situ.