An evaluation of resin coated urea as a nitrogen source in leaching conditions

2009
CC BY 4.0

Research organisatons

Trial details

Researcher(s) Peter Rees (Summit Fertilizers)
Year(s) 2009
Contributor West Midlands Group
Trial location(s) Badgingarra, WA
An evaluation of resin coated urea as a nitrogen source in leaching conditions locations
Aims

To evaluate the rate of breakdown and nutrient release of a resin coated urea relative to traditional Nitrogen Sources (Urea and Maxam).

Key messages
  • Over all there were no significant N responses despite a high yield potential and leaching rains.
  • Tissue tests did indicate some differences in the timing of N uptake (later in the case of the coated urea), however none of these differences resulted in differences in N efficiency.
Lead research organisation Summit Fertilizers
Host research organisation N/A
Related program N/A
Acknowledgments

Thanks to Kalyx Agriculture for conducting the research and the West Midlands group for supplying the land for the trial and making the research possible


Other trial partners Kalyx Agriculture
Download the trial report to view additional trial information

Method

Crop type Grain Legume: Lupins
Treatment type(s)
  • Fertiliser: Rate
  • Fertiliser: Timing
  • Fertiliser: Type
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Badgingarra 2009

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser

Topdressed N treatments were applied to the site in mid July to a farmer sown crop that had received 100kg/ha of an NPK supplying approximately 10 kg/ha N and 12 kg/ha P and K, as well as trace elements. Additional N was then supplied to half of the plots on the 31st of August in the form of standard urea.

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Treatment 2
Grain yield (t/ha)
1 Untreated control Nil August application 3.738
2 MAXam 190 kg/ha in July Nil August application 3.947
3 MAXam 380 kg/ha in July Nil August application 3.787
4 Urea 87 kg/ha in July Nil August application 3.923
5 Urea 174 kg/ha in July Nil August application 3.67
6 C.U. 93 kg/ha in July Nil August application 3.962
7 C.U. 186 kg/ha in July Nil August application 3.426
8 Nil July application Urea 87kg/ha in August 4.045
9 MAXam 190 kg/ha in July Urea 87kg/ha in August 4.206
10 MAXam 380 kg/ha in July Urea 87kg/ha in August 3.938
11 Urea 87 kg/ha in July Urea 87kg/ha in August 4.089
12 Urea 174 kg/ha in July Urea 87kg/ha in August 3.86
13 C.U. 93 kg/ha in July Urea 87kg/ha in August 4.108
14 C.U. 186 kg/ha in July Urea 87kg/ha in August 4.03

Grain yield t/ha


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Badgingarra, WA Sand
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Badgingarra, WA Chromosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Badgingarra WA
2009 176.1mm
2008 192.9mm
2007 135.2mm
2006 142.1mm
2005 169.7mm
2004 128.0mm
2003 144.9mm
2002 140.2mm
2001 128.6mm
2000 161.9mm
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Badgingarra WA 2009


Observed climate information

Rainfall trial gsr (mm) 447mm

Derived climate information

Badgingarra WA

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Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.



Trial last modified: 27-11-2019 08:53am AEST