Crop topping cereals for annual ryegrass 2007

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) N/A
Year(s) 2007
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Crop topping cereals for annual ryegrass 2007 locations

To investigate the effect of crop topping cereals for annual ryegrass control with nonselective herbicides.

Key messages
  • Glyphosate and glufosinate applied to flowering annual ryegrass give better control compared to later applications. While paraquat and diquat can be applied later.
  • Paraquat 0.8L/ha or glyphosate 2.0L/ha applied to flowering ryegrass gave over 90% control of viable seed set per head.
  • Glyphosate at 1.0L/ha or glufosinate above 2.0L/ha gave more than 65% control of ryegrass seed heads.
  • Herbicides applied to barley at the soft or firm dough stage of grain fill did not reduce grain number, weight or viability.
Lead research organisation Hart Field Site Group
Host research organisation N/A
Trial funding source GRDC
Related program N/A

Funded by the GRDC in collaboration with the Birchip Cropping Group and the University of Adelaide.

The Hart fieldsite group wish to thank Peter and Ben Coles for the use of their barley crop and their cooperation. Also, Lawrence Burke of the University of Adelaide for his work sampling and assessing the treatment effects.

Other trial partners BCG and UoA
Download the trial report to view additional trial information


Crop type Barley
Treatment type(s)
  • Herbicide
Trial type Experimental
Trial design Replicated

Hart 2007

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
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 5, Hart, SA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 5, Hart, SA 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.

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: 09-12-2019 19:00pm AEST