Black urea vs white urea

2007
CC BY 4.0

Research organisaton

Trial details

Researcher(s) Chris O'Callaghan (Liebe Group)
Year(s) 2007
Contributor Liebe Group
Trial location(s) West Buntine, WA
Black urea vs white urea locations
Aims

To look at the potential of black urea in terms of lifting yields through better nitrogen efficiency.

Key messages

Table 1 shows there was no benefit in applying black urea at 75kg/ha or white urea at 75 or 100kg/ha over the control.

Lead research organisation Liebe Group
Host research organisation N/A
Related program N/A
Acknowledgments
  • Paper reviewed by Erin Cahill.

Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Barley
Treatment type(s)
  • Fertiliser: Rate
  • Fertiliser: Type
Trial type Experimental
Trial design Replicated

West Buntine 2007

Sow date 20 June 2007
Harvest date Not specified
Plot size 150m x 18m
Plot replication 3
Fertiliser

20/6/07: 80 kg/ha AgFlow (75%) + AgNP (25%)

Herbicide

20/6/07: 1.2 L/ha Trifluralin, 20/9/07: 800 mL/ha MCPA LVE

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Grain yield (t/ha) Gross margin ($/ha)
1 Black Urea 100 kg/ha 1.27 179.83
2 Black Urea 75 kg/ha 1.15 161.03
3 Control (No Urea) 1.21 234.53
4 White Urea 100 kg/ha 1.15 161.03
5 White Urea 75 kg/ha 1.2 190.08

Grain yield t/ha


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Gross margin $/ha


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Observed trial site soil information
Trial site soil testing
Site Depth Type pH EC P K N A OC CAT
West Buntine, WA 0 - 10cm Sandy Loam
West Buntine, WA 10 - 30cm Sandy Loam
Soil conditions
Trial site Soil texture
West Buntine, WA Sandy loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
West Buntine, WA Sodosol
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 West Buntine WA
2007 162.8mm
2006 173.7mm
2005 167.1mm
2004 173.1mm
2003 177.6mm
2002 151.1mm
2001 165.4mm
2000 214.9mm
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

West Buntine WA 2007


Observed climate information

Rainfall trial gsr (mm) 130mm

Derived climate information

West Buntine 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 report and links

2007 trial report