public read uid=datalibrarian,o=unaffiliated,dc=ecoinformatics,dc=org all uid=deantoni,o=unaffiliated,dc=ecoinformatics,dc=org all uid=shcherbak,o=unaffiliated,dc=ecoinformatics,dc=org read Mr. Massimiliano De Antoni Migliorati Queensland University of Technology PhD student

Institute for Future Environments, Healthy Ecosystems and Environmental Monitoring Brisbane QLD 4001 Australia

+61 7 3138 1360 max.deantonimigliorati@qut.edu.au Ms. Siobhann McCafferty Institute for Future Environments, Queensland University of Technology Data Librarian

2 George Street Brisbane QLD 4001 Australia

+61 7 3138 0457 siobhann.mccafferty@qut.edu.au Custodian/Steward The objective of this experiment was to investigate the role of different N fertilization rates and the use of the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP, commercially sold as Entec) in reducing N2O emissions from subtropical wheat systems over winter. At the same time, particular attention was given to the yield response shown by the different treatments, in order to evaluate the respective economical sustainability and N2O intensity. The field experiment was set up in Kingaroy ( S-E QLD), on a euchrozems Ferrosol soil, using a randomized complete three-block design (three replicates per treatment). The four treatments encompassed three different fertilization rates and two types of Urea (conventional and DMPP urea): control treatment (L1: 0 kg-N ha-1), sub-optimal N rate (L2: 20 kg-N ha-1 –conv. urea) and optimal N rate (L3: 80 kg-N ha-1 –conv. Urea, L4: 80 kg-N ha-1 –DMPP urea). The N2O emissions were measured from planting (July 8th) to harvest (November 27th 2011) with a fully automated greenhouse gas measuring system. In order to gain optimum understanding of the dynamics influencing greenhouse gas production and release in agricultural soils, the air temperature and the soil moisture inside the measuring chambers were constantly monitored. To compare the "environmental" performances of the four treatments with agronomical sustainability grain yields were also determined. N2O Nitrous oxide Wheat Urea DMPP Auto Chambers Ferrosols Kingaroy QLD 0502 0799 anzsrc-for Please contact owner for permission to use this data. Bjelke Petersen Research Station, Kingaroy, Queensland. 151.828671 151.828671 -26.58183 -26.58183 2011-07-08 2011-11-27 1357781238252

The soil–atmosphere exchange of N2O was measured with a mobile fully automated measuring system. Sampling chambers (50cm x 50cm x 15cm) were fixed on stainless steel frames. The lids of the chambers were opened and closed automatically with pneumatic devices. During the closing period air samples from each chamber were taken alternately and injected towards the analytical devices. Soil-atmosphere exchange measurements were made at 3 subplots for each treatment within the split-plot design. Changes in N2O concentration after chamber closure were measured with a gas chromatograph (Texas Instruments SRI 8610C, Torrance/USA) equipped with a 63Ni electron capture detector (ECD) for N2O analysis.

Gas chromatograph (Texas Instruments SRI 8610C, Torrance/USA) equipped with a 63Ni electron capture detector (ECD) for N2O analysis. July 2011 - November 2011 The field experiment was set up in Kingaroy ( S-E QLD), on a euchrozems Ferrosol soil, using a randomized complete three-block design (three replicates per treatment). The four treatments encompassed three different fertilization rates and two types of Urea (conventional and DMPP urea): control treatment (L1: 0 kg-N ha-1), sub-optimal N rate (L2: 20 kg-N ha-1 –conv. urea) and optimal N rate (L3: 80 kg-N ha-1 –conv. Urea, L4: 80 kg-N ha-1 –DMPP urea). N2O emissions wheat Kingaroy 2011 Kingaroy N2O Wheat.xlsx application/vnd.ms-excel ecogrid://knb/deantoni.7.1 N2O fluxes daily n2o fluxes per replicate g N-N2O d-1 ha-1 real Sub-daily L1 wheat.csv Sub-daily L1 wheat.csv 52526 1 #x0A column , ecogrid://knb/datalibrarian.15.1 uid=datalibrarian,o=unaffiliated,dc=ecoinformatics,dc=org all uid=deantoni,o=unaffiliated,dc=ecoinformatics,dc=org read write changePermission uid=shcherbak,o=unaffiliated,dc=ecoinformatics,dc=org read time Time Time Hourly N2O flux (g N-N2O d-1 ha-1) N2O flux N2O flux temperature (°C) Temperature Temperature 1888 Sub-daily L2 Wheat.csv Sub-daily L2 Wheat.csv 52049 1 #x0A column , ecogrid://knb/datalibrarian.16.1 uid=datalibrarian,o=unaffiliated,dc=ecoinformatics,dc=org all uid=shcherbak,o=unaffiliated,dc=ecoinformatics,dc=org read time Time Time Hourly N2O flux (g N-N2O d-1 ha-1) N2O flux N2O flux temperature (°C) Temperature Temperature 1888 Sub-daily L3 Wheat.csv Sub-daily L3 Wheat.csv 52498 1 #x0A column , ecogrid://knb/datalibrarian.17.1 uid=datalibrarian,o=unaffiliated,dc=ecoinformatics,dc=org all uid=deantoni,o=unaffiliated,dc=ecoinformatics,dc=org read write changePermission uid=shcherbak,o=unaffiliated,dc=ecoinformatics,dc=org read time Time Time Hourly N2O flux (g N-N2O d-1 ha-1) N2O flux N2O flux temperature (°C) Temperature Temperature 1888 Sub-daily L4 Wheat.csv Sub-daily L4 Wheat.csv 52159 1 #x0A column , ecogrid://knb/datalibrarian.18.1 uid=datalibrarian,o=unaffiliated,dc=ecoinformatics,dc=org all uid=deantoni,o=unaffiliated,dc=ecoinformatics,dc=org read write changePermission uid=shcherbak,o=unaffiliated,dc=ecoinformatics,dc=org read time Time Time Hourly N2O flux (g N-N2O d-1 ha-1) N2O flux N2O flux temperature (°C) Temperature Temperature 1888 Kingaroy Wheat Kingaroy Wheat.xlsx application/vnd.ms-excel ecogrid://knb/datalibrarian.195.1 Soil property Soil property. Soil property measured 0-10cm Measure at 0-10cm depth mixed measurements 10-20cm Measures at 10-20cm depth mixed measurements 20-30cm Measures at 20-30cm depth Mixed measurements De Antoni article Influence of different nitrogen rates and DMPP nitrification inhibitor on annual N2O emissions from a subtropical wheat-maize cropping system Influence of different nitrogen rates and DMPP nitrification-Published.pdf pdf ecogrid://knb/datalibrarian.198.1 Article text Body text in PDF format Text and tables in pdf format g N-N2O d-1 ha-1