Impact of modifying the subsoil at Vivonne Bay

2006

Research organisaton
Funding sources

Trial details

Researcher(s) Nigel Wilhelm (SARD)
Year(s) 2006
Contributor Agriculture Kangaroo Island Incorporated
Trial location(s) MacGillivray, SA
Impact of modifying the subsoil at Vivonne Bay locations
Aims

To test the impact of adding gypsum, lime or fertilisers to the subsoil of a profile typical for the Vivonne Bay environment but in a situation which usually gets very wet, and is designed to run for at least two years.

Key messages
  • Similar to previous years and at other sites on similar KI soils, adding soil improvement agents to the subsoil did
  • not produce any tangible benefits to wheat performance in last year’s trial.
  • However, chemical analysis of the soil to a depth of 60 cm below the surface did not reveal any major constraints to growth at this site except low fertility.
  • This would help explain why adding lime and gypsum to the soil (either to the surface or into the subsoil) had no
  • impact on crop productivity.
  • Deep ripping did not produce any benefits to crop performance in the very dry year of 2006.
Lead research organisation Agriculture Kangaroo Island Incorporated
Host research organisation N/A
Trial funding source GRDC
Trial funding source SARDI
Related program N/A
Acknowledgments N/A
Other trial partners SARDI
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Soil Improvement
Trial type Experimental
Trial design Replicated

MacGillivray 2006

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Grain yield (t/ha) 1000 grain weight (g) Protein (%) Screenings <2mm (%)
1 Control 2.16 34.5 12.5 8.9
2 Lime on the surface 2.19 35 12.6 8.6
3 Gypsum on the surface 2.43 34.6 13.4 10.3
4 Deep ripping 2.04 34.9 13.3 8.2
5 Deep ripping with lime at depth 2.2 35 12.3 7.7
6 Deep ripping with gypsum+lime on surface 2.19 34.2 13 9.9
7 Deep ripping with gypsum+lime at depth 2.17 34.4 12.8 9
8 Deep ripping with gypsum+lime at depth 2.01 34.5 12.6 7.8
9 Deep ripping with nutrients at depth 2.35 35.4 12.3 8.2

Grain yield t/ha


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1000 grain weight g


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Protein %


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Screenings <2mm %


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
MacGillivray, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
MacGillivray, SA Tenosol
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 MacGillivray SA
2006 535.1mm
2005 535.7mm
2004 550.1mm
2003 573.2mm
2002 535.7mm
2001 544.8mm
2000 551.9mm
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

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

MacGillivray SA

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

2006 trial report



Trial last modified: 15-12-2021 10:14am AEST