Variety x plant denisty x nitrogen x time of sowing

2010
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Simon Craig (BCG)
Nicole Dimos (SPAA)
Year(s) 2010
Contributor Society of Precision Agriculture Australia
Trial location(s) Birchip, VIC
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 Cereal (Grain): Wheat
Treatment type(s)
  • Crop: Variety
  • Fertiliser: Rate
  • Sowing: Rate
  • Sowing: Timing
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

Other trial notes

Trial design: Nearest neighbour

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
Other trial notes

Trial design: Nearest neighbour

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
Birchip, VIC Not specified
Kooloonong, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Birchip, VIC Vertosol
Kooloonong, VIC Vertosol
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 Birchip VIC Kooloonong VIC
2010 344.5mm528.4mm
2009 292.7mm403.1mm
2008 275.5mm391.8mm
2007 274.8mm406.5mm
2006 283.6mm426.2mm
2005 316.0mm451.3mm
2004 281.0mm408.8mm
2003 275.8mm406.3mm
2002 240.1mm389.0mm
2001 285.1mm444.8mm
2000 290.6mm412.2mm
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

Birchip VIC 2010


Observed climate information

Rainfall trial gsr (mm) 348mm

Derived climate information

Birchip VIC

Kooloonong VIC

Birchip VIC

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

Trial report and links

2010 trial report



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