To see if harvest weed seed practices could be adopted to reduce annual ryegrass (ARG) weed seed populations to address herbicide resistance issues in high yielding, high rainfall zone (HRZ) areas of the southern region.
Key messages
Timeliness of harvest is critical to try and maximise the number of annual ryegrass (ARG) weed seeds captured (prior to the onset of seed shedding).
Harvest height will aid in the capture of increased numbers of ryegrass.
The amount of ARG captured will depend on conditions prior to harvest and the level of lodging that occurs prior to harvest.
When weed levels get too high, several years of alternative crop sequences may be required to get numbers down to an acceptable level.
Lead research organisation
N/A
Host research organisation
MacKillop Farm Management Group
Trial funding source
GRDC SFS00032
Related program
N/A
Acknowledgments
Hartley and Brad Hocking and families, Conmurra
The Baker Group, Furner; in particular Geoff, Lindsay and Kieran Agnew
Trial source data and summary not available Check the trial
report PDF for trial results.
Climate
Derived climate information
No observed climate data available for this trial. Derived climate data is
determined from trial site location and national weather sources.
Conmurra SA
Furner SA
Wolseley SA
Conmurra SA
Furner SA
Wolseley SA
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.
