Podcast tells story of herbicide resistance
Author: Toni Somes | Date: 10 Oct 2018
Results from a five-year national survey, which paints a sobering picture of the growing herbicide resistance issue in key cropping weeds, are the focus of a Grains Research and Development Corporation (GRDC) podcast released today.
John Broster, from the Graham Centre for Agricultural Innovation at Charles Sturt University, speaks about herbicide resistance as this week’s guest on the GRDC podcast series, which aims to deliver grain growers, advisers, industry stakeholders and researchers timely information about the latest seasonal issues, ground-breaking research and trial results with on-farm application.
The series is updated weekly, with podcasts collected from across Australia’s grain growing regions, and is firmly focused on delivering seasonally-relevant information to growers and advisers to help inform grower decision making and profitability.
This week’s podcast interview with Dr Broster explains the survey project, which was a joint monitoring initiative between Charles Sturt University, Queensland Department of Agriculture and Fisheries and the Universities of Adelaide and Western Australia with GRDC investment.
As part of the five-year project the research team visited 3000 randomly selected paddocks and took 2000 samples of the nation’s number one weed, annual ryegrass, which is followed by wild radish in Western Australia, wild oats in Queensland and New South Wales, and sow thistle in fourth place.
The survey revealed that nationally, about 75 per cent of the populations of ryegrass tested are resistant to Group A ‘fop’ herbicides, ranging from 99 per cent in WA and 90 per cent in southern NSW around Wagga, to much lower levels in western NSW where cropping intensity is a bit lower, and in northern NSW where cropping systems are different.
GRDC General Manager Grower Business Group, Lucy Broad, said this podcast, like others in the series, had been developed in response to audience requests for quality information, on-demand.
“We know growers and advisers are keen to hear the latest research and development information and this is a way of delivering it to them in an accessible format that lets them decide what, when and where they listen,” Ms Broad said.
To listen to the new GRDC podcast series, direct links to iTunes or Soundcloud are available from https://grdc.com.au/podcasts or use this URL to listen from your desktop.
Growers looking for more information about herbicide resistance can find it at: https://weedsmart.org.au/
WeedSmart is an industry-led initiative to enhance on-farm practices and promote the long term sustainability of herbicide use.
Toni Somes, GRDC
0436 622 645
GRDC Project code: ANV1804-001SAX
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