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

2 George Street Brisbane QLD 4001 Australia

07 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 maize systems over summer. 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: 40 kg-N ha-1 -conv. urea), sub-optimal N rate (L2: 100 kg-N ha-1 –conv. urea) and optimal N rate (L3: 160 kg-N ha-1 –conv. urea, L4: 160 kg-N ha-1 –DMPP urea). The N2O emissions were measured from planting (December 20th 2011) to harvest (June 20th 2012) 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 Maize Urea DMPP Nitrification Inhibitor Auto Chambers Ferrosols Kingaroy QLD 0502 0799 anzsrc-for Please contact the owner for permission to use this data. 2010-12-20 2012-06-20 Bjelke Petersen Research Station, Kingaroy, Queensland. 151.828671 151.828671 -26.58183 -26.58183 1362445668814

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.

Sub-daily L1 Maize.csv Sub-daily L1 Maize.csv 127251 1 #x0A column , ecogrid://knb/datalibrarian.20.1 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 time Time Time Hourly N2O flux (g N-N2O d-1 ha-1) N2O flux N2O flux temperature (°C) Temperature Temperature 3872 Sub daily L2 Maize.csv Sub daily L2 Maize.csv 127979 1 #x0A column , ecogrid://knb/datalibrarian.21.1 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 time Time Time Hourly N2O flux (g N-N2O d-1 ha-1) N2O flux N2O flux temperature (°C) Temperature Temperature 3872 Sub-daily L3 maize.csv Sub-daily L3 maize.csv 129752 1 #x0A column , ecogrid://knb/datalibrarian.22.1 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 time Time TIme Hourly N2O flux (g N-N2O d-1 ha-1) N2O flux N2O flux temperature (°C) Temperature Temperature 3872 Sub-daily L4 maize.csv Sub-daily L4 maize.csv 127746 1 #x0A column , ecogrid://knb/datalibrarian.23.1 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 time Time TIme Hourly N2O flux (g N-N2O d-1 ha-1) N2O flux N2O flux temperature (°C) Temperature Temperature 3872 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.199.1 Article text Article text in PDF Text and tables pdf Kingaroy_Maize_full_data Kingaroy Maize.xlsx application/vnd.ms-excel ecogrid://knb/datalibrarian.203.1 Kingaroy Site Site data text and tables Climate data Kingaroy climate data text and tables Soil Mineral N Soil Mineral N data for Kingaroy text and tables Average N2O fluxes N2O flux data Kingaroy text and tables Kingaroy Summary data Summary data for Kingaroy tables and text