Agronomic responses of grain sorghum to DMPP-treated urea on contrasting soil types in north-eastern Australia

Lester, David W., Bell, Michael J., Bell, Kerry L., De Antoni Migliorati, Massimilano, Scheer, Clemens, Rowlings, David and Grace, Peter R. (2016) Agronomic responses of grain sorghum to DMPP-treated urea on contrasting soil types in north-eastern Australia. Soil Research, 54 5: 565-571. doi:10.1071/SR15337


Author Lester, David W.
Bell, Michael J.
Bell, Kerry L.
De Antoni Migliorati, Massimilano
Scheer, Clemens
Rowlings, David
Grace, Peter R.
Title Agronomic responses of grain sorghum to DMPP-treated urea on contrasting soil types in north-eastern Australia
Journal name Soil Research   Check publisher's open access policy
ISSN 1838-675X
1838-6768
Publication date 2016-07-27
Year available 2016
Sub-type Article (original research)
DOI 10.1071/SR15337
Open Access Status DOI
Volume 54
Issue 5
Start page 565
End page 571
Total pages 7
Place of publication Clayton, VIC, Australia
Publisher C S I R O Publishing
Collection year 2017
Language eng
Formatted abstract
Grain sorghum grown in north-eastern Australia’s cropping region increasingly requires nitrogen (N) fertiliser to supplement the soil available N supply. The rates of N required can be high when fallows between crop seasons are short (higher cropping intensities) and when yield potentials are high.

Fertiliser N is typically applied before or at crop sowing and is vulnerable to environmental loss in the period between application and significant crop N demand due to potentially intense rainfall events in the summer-dominant rainfall environment.

Nitrification inhibitors added to urea can reduce certain gaseous loss pathways but the agronomic efficacy of these products has not been explored. Urea and urea coated with the nitrification inhibitor DMPP (3,4-dimethylpyrazole phosphate) were compared in sorghum crops grown at five research sites over consecutive summer sorghum growing seasons in south-east Queensland. Products were compared in terms of crop responses in dry matter, N uptake and grain yield, with DMPP found to produce only subtle increases on grain yield. There was no effect on dry matter or N uptake. Outcomes suggest any advantages from use of DMPP in this region are most significant in situations where higher fertiliser application rates (>80 kg N/ha) are required.
Keyword Agronomic efficiency
Enhanced efficiency fertilisers
Urea
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Agriculture and Food Sciences
 
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Created: Tue, 29 Mar 2016, 16:51:55 EST by Associate Professor Michael Bell on behalf of School of Agriculture and Food Sciences