The effect of sowing date on cereal grain yield and quality


Research organisaton

Trial details

Researcher(s) Dom Bolton and Wes Arnott (SFS Ltd)
Year(s) 2003
Contributor Southern Farming Systems
Trial location(s) Gnarwarre, VIC
The effect of sowing date on cereal grain yield and quality locations
  • To identify the impact of sowing time on grain yield and grain quality.
  • To identify different varietal responses to varying sowing time.
Key messages

The effect of planting date on grain protein is less clear when viewed over the full planting date range. Past mid June however, the figures would suggest that delaying sowing date in fact increases grain protein.

Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information


Crop types Barley
Treatment type(s)
  • Sowing: Timing
  • Variety: Type
Trial type Demonstration
Trial design Unknown

Gnarwarre 2003 Barley

Sow date Not specified
Harvest date Not specified
Plot size 1.7m x 60m
Plot replication Not specified

Gnarwarre 2003 Wheat

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
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Download results

Trial results Table 1

# Variety
Treatment 1
Grain yield (t/ha) Protein (%) Test weight (kg/hL)
1 Mackellar Sown 20th May 6.352 9.2 75.4
2 Kellalac Sown 20th May 5.838 9.3 80
3 Gairdner Sown 2nd June 5.65 9.2 68
4 Kellalac Sown 19th June 5.638 10.3 79
5 Gairdner Sown 18th July 5.602 10 66
6 Mackellar Sown 2nd June 5.481 7.9 76.2
7 Kellalac Sown 2nd June 5.42 10 80
8 Mackellar Sown 19th June 5.366 8.6 78
9 Gairdner Sown 2nd July 5.336 9.5 66.4
10 Mackellar Sown 2nd July 5.233 8.4 74.8
11 Kellalac Sown 4th August 5.227 11.5 75
12 Kellalac Sown 2nd July 5.178 9.1 78.6
13 Gairdner Sown 4th August 5.1 10.7 64.2
14 Kellalac Sown 18th July 5.045 10.6 77.4
15 Mackellar Sown 18th July 4.961 10.5 72
16 Gairdner Sown 20th May 4.586 9.9 66.2
17 Mackellar Sown 4th August 4.495 11 66.6

Grain yield t/ha


Protein %


Test weight kg/hL

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Gnarwarre, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Gnarwarre, VIC Chromosol
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



Derived climate information

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

Gnarwarre VIC


Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from
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: 14-11-2019 15:23pm AEST