Variety x plant denisty x nitrogen x time of sowing

2010

Research organisaton
Funding source

Trial details

Researcher(s) Nicole Dimos (SPAA) and Simon Craig (BCG)
Year(s) 2010
Contributor Society of Precision Agriculture Australia
Trial location(s) Site 6, Birchip, VIC
Site 2, Kooloonong, VIC
Variety x plant denisty x nitrogen x time of sowing locations
Aims
  • To sow wheat varieties earlier to reduce the possibility of heat shock events during grain fill whilst taking into account the frost risk.
  • To sow more than one variety in the one paddock as a mix to ensure that the whole crop is not susceptible to frost and heat shock at the same time.
Key messages

Birchip: The site was located in a paddock with moderate subsoil limitations (40 to 70cm layer had chloride reading of 1800ppm, and an EC of 0.6dS/m). The site had a previous legume history and was high in soil available N (prior to sowing the soil contained 230 kg available N/ha to 1m depth).

Kooloonong: The site was located on a Mallee land system, on a flat to sloping rise with a sandy loam soil to a depth of 40cm and at greater depth a sandy clay loam to at least 130cm. The soil has no subsoil limitations but because it is light and sandy, leaching of nutrients can be a problem. 2010 had a growing season rainfall of 329mm (decile 10).

Lead research organisation Society of Precision Agriculture Australia
Host research organisation N/A
Trial funding source GRDC SPA000010
Related program N/A
Acknowledgments

The BCG would like to thank it’s collaborators for their participation in these trials. Their assistance was greatly appreciated. The Birchip Trial was hosted by John and David Ferrier. The Kooloonong Trial was hosted by Roger, Lisa and Brad McQueen. Simon Craig and Harm van Rees were responsible for coordinating the trials. This project was funded by the Grains Research and Development Corporation (GRDC) and run in conjunction the Australian Government under its Climate Change Research Program, and CSIRO Climate Adaptation Flagship


Other trial partners Birchip Cropping Group
Download the trial report to view additional trial information

Method

Crop type Wheat
Treatment type(s)
  • Fertiliser: Rate
  • Sowing: Rate
  • Sowing: Timing
  • Variety: Type
Trial type
Trial design

Birchip 2010

Sow rate or Target density 100 and 150 plants/m2
Sow date 20 May 2010 20 May 2010 and 7 June 2010
Harvest date Not specified
Plot size Not specified
Plot replication 1
Fertiliser

At sowing 50kg/ha MAP (5kg N/ha); 26/7/2010 50kg/ha Urea (23kg N/ha) - high plots

Kooloonong 2010

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Birchip

# Variety
Treatment 1
Treatment 2
Treatment 3
Treatment 4
Grain yield (t/ha)
1 Axe 20 May 100 plants/m2 0kg N/ha 5.7
2 Axe 20 May 150 plants/m2 0kg N/ha 5.9
3 Axe 20 May 100 plants/m2 23kg N/ha 5.9
4 Axe 20 May 150 plants/m2 23kg N/ha 5.8
5 Axe 7 June 100 plants/m2 0kg N/ha 5.7
6 Axe 7 June 150 plants/m2 0kg N/ha 6
7 Axe 7 June 100 plants/m2 23kg N/ha 5.4
8 Axe 7 June 150 plants/m2 23kg N/ha 5.9
9 Yitpi 20 May 100 plants/m2 0kg N/ha 5.4
10 Yitpi 20 May 150 plants/m2 0kg N/ha 5.8
11 Yitpi 20 May 100 plants/m2 23kg N/ha 5.7
12 Yitpi 20 May 150 plants/m2 23kg N/ha 5.7
13 Yitpi 7 June 100 plants/m2 0kg N/ha 5.9
14 Yitpi 7 June 150 plants/m2 0kg N/ha 5.8
15 Yitpi 7 June 100 plants/m2 23kg N/ha 5.8
16 Yitpi 7 June 150 plants/m2 23kg N/ha 5.8

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
Site 6, Birchip, VIC Not specified
Site 2, Kooloonong, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 6, Birchip, VIC Vertosol
Site 2, Kooloonong, VIC Vertosol
National soil grid Source
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

Site 6, Birchip VIC 2010


Observed climate information

Rainfall trial gsr (mm) 348mm

Derived climate information

Site 6, Birchip VIC

Site 2, Kooloonong VIC

Site 6, Birchip VIC

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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Site 2, Kooloonong VIC

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.




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Trial last modified: 30-09-2019 16:20pm AEST