- Title
- On-farm trial on the effectiveness of the nitrification inhibitor DMPP indicates no benefits under commercial Australian farming practices
- Creator
- Nauer, Philipp; Fest, Benedikt; Visser, Luke; Arndt, Stefan
- Date
- 2018
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/193903
- Identifier
- vital:18274
- Identifier
-
https://doi.org/10.1016/j.agee.2017.10.022
- Identifier
- ISSN:0167-8809 (ISSN)
- Abstract
- The trend of increasing nitrogen (N) fertilisation in commercial agriculture demands mitigation of negative impacts on the environment, such as emissions of the potent greenhouse gas nitrous oxide (N2O). Laboratory and controlled field experiments have demonstrated that the nitrification inhibitor 3,4-Dimethylpyrazole phosphate (DMPP) has the potential to effectively mitigate N2O emissions from dairy pasture and crop farming, and may increase yields. Yet, this has not been investigated in on-farm research trials under commercial production conditions. During the winter growing seasons 2014–2016 we performed an on-farm trial on five commercial broad-acre cropping and five dairy farms in North-East Victoria, Australia, to compare the performance of DMPP + urea (treatment) against conventional urea (control) fertiliser in mitigating N2O emissions and increasing crop and pasture yields. Application rate was fixed at the regional industry standard of 46 kg N ha‐1, yet timing, number of applications and all other management decisions were left to the judgement of the participating farmers. Emissions of N2O were highly variable over time and between farms. We recorded emission spikes of up to 250 g N2O-N ha
- Publisher
- Elsevier B.V.
- Relation
- Agriculture, Ecosystems and Environment Vol. 253, no. (2018), p. 82-89
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- Copyright © 2017 Elsevier B.V.
- Subject
- 30 Agricultural, veterinary and food sciences; 41 Environmental sciences; 44 Human society; Crop yield; DMPP; Nitrification inhibitor; Nitrous oxide; On-farm trial; Pasture yield
- Reviewed
- Funder
- This work was supported by a grant under the Action on the Ground Round 2 scheme of the Australian Department of Agriculture and Water Resources ( AOTGR2-0138 ).
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