In-season nitrogen on wheat on paddock management zones - West Buntine

2005
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Michael Robertson (CSIRO)
Kathy Wittwer (CSIRO)
Year(s) 2005
Contributor Liebe Group
Trial location(s) West Buntine, WA
In-season nitrogen on wheat on paddock management zones - West Buntine locations
Aims

To evaluate the response of wheat (yield and protein) in different paddock management zones to in-season application of nitrogen fertiliser, using the Yield Prophet system as a guide.

Key messages
  • Yield differences between soil types were less than seen in previous seasons on this paddock.
  • Yield responded to an extra 25kg/ha N at sowing on the deep yellow sand over gravel and shallow gravel yielded around 2.5t/ha.
Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC SIP09
Related program N/A
Acknowledgments

Thanks to Stuart McAlpine, Brianna Peake for assistance with Yield Prophet simulations, CBH for grain analysis, GRDC for funding through the SIP09 Precision Agriculture Initiative.


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

Method

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

West Buntine 2005

Sow rate or Target density 75kg/ha
Sow date 2 June 2005
Harvest date Not specified
Plot size Not specified
Plot replication 4
Fertiliser

Basal fertiliser: 90 kg/ha of Macropro+ (9 kg N/ha) applied to entire paddock at seeding. At each sampling position 4 fertiliser treatments were applied

A no further topdressing (total N 9 kgN/ha)

B 60 L/ha Flexi_N (25 kg N/ha) at sowing (total N 34 kgN/ha)

C 30 L/ha Flexi_N (12.5 kg N/ha) applied on 2nd Sept 2005 (total N 21.5 kgN/ha)

D 60 L/ha Flexi_N (25 kg N/ha) at sowing, plus 30 L/ha Flexi_N (12.5 kg N/ha) applied on 2nd Sept 2005 (total N 46.5 kgN/ha).

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Treatment 2
Gross margin ($/ha) Protein (%) Grain yield (t/ha) Hectolitre weight (kg/hL) Screenings (%)
1 Deep Yellow Sand 34 + 12.5 kg N/ha 385 9.6 2.94 84.5 1.94
2 Gravel over Red Clay 34 + 12.5 kg N/ha 464 10.4 3.36 83.96 2.07
3 Sand over Gravel 34 + 12.5 kg N/ha 301 9.6 2.49 82.46 2.28
4 Shallow Gravel 34 + 12.5 kg N/ha 315 10.15 2.57 83.66 1.84
5 Deep Yellow Sand 34 kg N/ha 353 9.4 2.7 84.72 2.64
6 Gravel over Red Clay 34 kg N/ha 312 7.8 2.48 84.06 1.05
7 Sand over Gravel 34 kg N/ha 360 9.98 2.73 82.12 2.06
8 Shallow Gravel 34 kg N/ha 420 9.4 3.05 84.92 1.21
9 Deep Yellow Sand 9 + 12.5 kg N/ha 351 9.75 2.6 84.37 1.54
10 Gravel over Red Clay 9 + 12.5 kg N/ha 300 9.3 2.33 84.56 1.66
11 Sand over Gravel 9 + 12.5 kg N/ha 328 9.4 2.48 83.39 1.55
12 Shallow Gravel 9 + 12.5 kg N/ha 266 9.9 2.15 1.42
13 Deep Yellow Sand 9 kg N/ha 193 9.6 2.2 85.12 1.48
14 Gravel over Red Clay 9 kg N/ha 362 7.7 2.57 82.92 3.09
15 Sand over Gravel 9 kg N/ha 284 9.38 2.16 82.91 2.42
16 Shallow Gravel 9 kg N/ha 335 9.2 2.43 84.88 1.24

Grain yield t/ha


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Gross margin $/ha


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Hectolitre weight kg/hL


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Protein %


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Screenings %


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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 Various
West Buntine, WA 10 - 30cm Various
Soil conditions
Trial site Soil texture
West Buntine, WA Various
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
West Buntine, WA Kandosol
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
2005 331.7mm
2004 317.3mm
2003 310.2mm
2002 263.1mm
2001 297.8mm
2000 359.5mm
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 2005


Observed climate information

Rainfall trial gsr (mm) 270mm

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

2005 trial report



Trial last modified: 23-07-2019 15:09pm AEST