Variable rate applications of nutrients

2007
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Emma Glasfurd (Liebe Group)
Year(s) 2007
Contributor Liebe Group
Trial location(s) Miling, WA
Variable rate applications of nutrients locations
Aims

To determine the effects of variable rate technology (VRT) through variable nutrient management across high, medium and low performing soil types, and also the effects of seeding rate across these soil types

Key messages

An analysis of the soils PAWC needs to be conducted to determine yield potential of the soil types analysed to draw meaningful conclusions from these results.

Lead research organisation Liebe Group
Host research organisation N/A
Trial funding source GRDC LIE00005
Related program N/A
Acknowledgments

Liebe Group would like to acknowledge GRDC for funding the project. Thanks also to Lance and Robyn Kennedy for hosting the trial site and assistance with seeding, harvesting and implementing the trial.

  • Paper reviewed by Michael Robertson.

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
  • Soil Properties: Type
Trial type Experimental
Trial design Replicated

Miling 2007

Sow date 16 June 2007
Harvest date Not specified
Plot size 375m x 13m
Plot replication 3
Fertiliser

Compound Potassium and Phosphorus granular fertiliser rates: High 80 kg/ha, medium 60 kg/ha and low 0 kg/ha. UAN liquid fertiliser rates: High 50-60 kg/ha, medium 40 kg/ha and low 10-20 kg/ha

Herbicide

16/6/07: 2.3 L/ha Duet, 16/6/07: 10 g/ha Glean, PSPE: 700 mL/ha Roundup Powermax, PSPE: 250 mL/ha Ester, POST: 600 mL/ha MCPA LVE

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Treatment 2
Protein (%) Grain yield (t/ha) Gross margin ($/ha) Screenings (%)
1 Good soil (1) High Fert 12.9 0.66 26.65 5.05
2 Good soil (2) High Fert 14.3 0.82 94.75 5.38
3 Medium soil High Fert 12.4 0.85 105.33 7.41
4 Poor soil High Fert 11.3 0.36 -100.25 8.7
5 Good soil (1) Low Fert 11.5 0.56 83.77 3.3
6 Good soil (2) Low Fert 13 0.82 193.32 3.72
7 Medium soil Low Fert 11.5 0.75 162.02 4.27
8 Poor soil Low Fert 11 0.29 -33.4 9.64
9 Good soil (1) Med Fert 14.4 0.49 13.9 6.54
10 Good soil (2) Med Fert 12.4 0.72 111.61 7.72
11 Medium soil Med Fert 11.7 0.93 202.56 3.23
12 Poor soil Med Fert 11.2 0.41 -19.94 7.12
13 High Seeding Rate 11.9 0.75 5.33
14 Low Seeding Rate 11.8 0.89 4.47
15 Medium Seeding Rate 12.4 0.64 5.63

Grain yield t/ha


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Gross margin $/ha


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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
Miling, WA 0 - 10cm Various
Miling, WA 10 - 30cm Various
Soil conditions
Trial site Soil texture
Miling, WA Various
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Miling, 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 Miling WA
2007 228.4mm
2006 236.7mm
2005 184.9mm
2004 197.6mm
2003 180.7mm
2002 147.2mm
2001 177.1mm
2000 274.6mm
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

Miling WA 2007


Observed climate information

Rainfall trial gsr (mm) 127mm

Derived climate information

Miling WA

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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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