Andrew Sandison (Planfarm)
|Contributor||North East Farming Futures|
Northern Agricultural Region (NAR) of Western Australia, WA
To see if herbicide strategies can be developed that will reduce the heavy reliance that growers in the Northern Agricultural Region now place on the key active pyrosulfatole, found in the products Velocity and Precept.
The trials clearly showed that high levels of control of resistant radish populations could be achieved with a 2 spray program that used both old and new chemistries. The trials clearly showed that growers don’t need to use 2 applications of pyrasulfatole in one crop to achieve satisfactory control if small weeds are targeted with robust herbicide rates and good spray coverage.
Growers should be using a 2 spray regime on bad wild radish paddocks as a matter of course. Growers should be targeting radish as early as possible i.e. from the 2 leaf stage of the cereal crop and be coming back 3 - 4 weeks later with a second application using alternative modes of action to those used in the first spray. An example of this would be to use Velocity at 2 leaf stage of the crop and follow up with 24,D amine plus Ecopar as a second spray application.
|Lead research organisation||
North East Farming Futures
|Host research organisation||N/A|
|Trial funding source||GRDC UB0003|
|Trial funding source||Planfarm|
|Other trial partners||Not specified|
|Sow date||Not specified|
|Harvest date||Not specified|
|Plot size||Not specified|
|Plot replication||Not specified|
This research examined the effectiveness of 2 times of spraying, early 2 - 3 leaf stage of wheat crop, and 3 weeks later i.e. 5 - 6 leaf stage of wheat crop on wild radish control. Multiple herbicides and herbicide mixes were used to see if different sequences and mixes of both older (cheaper) and newer (expensive) herbicides could provide adequate control of known herbicide resistant wild radish populations.
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.