Authors: Ben Fleet1, Amanda Cook2, Ian Richter2, Christopher Preston1, and Gurjeet Gill1
1School of Agriculture, Food & Wine, University of Adelaide, 2Minnipa Ag Centre, SARDI
Funded By: GRDC Stubble Initiative MSF00003
Project Title: Productive, Profitable and Sustainable Paddock Rotations
Peer Review: Nigel Wilhelm (SARDI)
Key Words: herbicides, barley grass, cereals, weed control
- Potential of older herbicides from broadacre and horticultural industries to control barley grass in barley was evaluated in a field trial at Minnipa in 2017.
- Overreliance on group B herbicides for post-emergent control of barley grass, has already resulted in high incidence of resistance to SU herbicides and resistance to imidazolinone herbicides is also likely to occur in the future.
- Extremely dry conditions at Minnipa at the start of the growing season in 2017 were unsuitable for the activity of pre-emergent herbicides on barley grass. Even under these challenging conditions, an experimental herbicide (Experimental-1) at the high rate provided effective pre-emergent control of barley grass.