Managing crop growth and water use

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Victor Sadras (SARDI) and Glenn McDonald (University of Adelaide)
Year(s) 2012
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Managing crop growth and water use locations

To manage the crop canopy and conserve the stored soil moisture so that it might be saved for grain-fill, rather than being used to create early crop growth.

Key messages
  • The highest yielding treatments were the early high nitrogen rate (2.80t/ha) or the high nitrogen rate (2.91t/ha).
  • Treatments imposed to manipulate crop growth were unable to save more soil moisture for grain fill
Lead research organisation Hart Field Site Group
Host research organisation Hart Field Site Group
Trial funding source GRDC
Related program N/A

This trial is funded by the GRDC and conducted in collaboration with Victor Sadras, SARDI, and Glenn McDonald from the University of Adelaide. 

Other trial partners SARDI and the University of Adelaide
Download the trial report to view additional trial information


Crop type Wheat
Treatment type(s)
  • Crop
  • Crop: Type
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2012

Sow rate or Target density Gladius wheat @ 100kg/ha
Sow date 30 May 2012
Harvest date Not specified
Plot size 1.4m x 10m
Plot replication 3

DAP + Zn 2% @ 80kg/ha

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Protein (%) Grain yield (t/ha) Screenings (%) Test weight (kg/hL)
1 Early variety - Axe 13.1 2.39 0.4 78.7
2 Mid variety - Mace 11 2.77 0.7 79.4
3 Late variety - Puglsey 12.7 2.37 0.6 79.3
4 Reduced seed rate 10.9 2.62 0.7 80.1
5 Narrow row spacing 12.1 2.76 0.9 79
6 Growth regulant at GS30 11.1 2.58 0.6 79.4
7 Early high N 12.1 2.8 0.8 79.8
8 Split N 11.7 2.65 0.7 79.4
9 Late high N 10.9 2.72 0.6 79.7
10 High N rate 11.8 2.91 0.7 79.3

Grain yield t/ha


Protein %


Screenings %


Test weight kg/hL

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 5, Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Site 5, Hart, SA Chromosol
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 Site 5, Hart SA
2012 654.6mm
2011 683.8mm
2010 686.7mm
2009 669.9mm
2008 633.9mm
2007 649.9mm
2006 651.2mm
2005 675.4mm
2004 633.0mm
2003 652.2mm
2002 649.4mm
2001 674.5mm
2000 625.6mm
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



Site 5, Hart SA 2012

Observed climate information

Rainfall trial gsr (mm) 168mm

Derived climate information

Site 5, Hart SA


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.

Trial last modified: 08-06-2018 14:02pm AEST