Control of thiocarbamate-resistant rigid ryegrass (Lolium rigidum) in wheat in southern Australia. (10th September 2019)
- Record Type:
- Journal Article
- Title:
- Control of thiocarbamate-resistant rigid ryegrass (Lolium rigidum) in wheat in southern Australia. (10th September 2019)
- Main Title:
- Control of thiocarbamate-resistant rigid ryegrass (Lolium rigidum) in wheat in southern Australia
- Authors:
- Brunton, David J.
Boutsalis, Peter
Gill, Gurjeet
Preston, Christopher - Abstract:
- Abstract: Two field experiments were conducted during 2018 at Paskeville and Arthurton, South Australia, to identify effective herbicide options for the control of thiocarbamate-resistant rigid ryegrass in wheat. Dose–response experiments confirmed resistance in both field populations (T1 and A18) of rigid ryegrass to triallate, prosulfocarb, trifluralin, and pyroxasulfone. T1 and A18 were 17.9- and 20-fold more resistant to triallate than susceptible SLR4. The level of resistance detected in T1 to prosulfocarb (5.9-fold) and pyroxasulfone (4-fold) was lower compared to A18, which displayed 12.1- and 7.8-fold resistance to both herbicides, respectively. Despite resistance, the mixture of two different preplant-incorporated (PPI) site-of-action herbicides improved rigid ryegrass control and wheat yield compared to a single PPI herbicide only. Prosulfocarb + triallate and prosulfocarb + S -metolachlor + triallate did not reduce rigid ryegrass seed set when compared to prosulfocarb applied alone at the higher rate (2, 400 g ai ha –1 ). Pyroxasulfone + triallate PPI followed by glyphosate (1, 880 g ai ha -1 ) as a weed seed set control treatment reduced rigid ryegrass seed production by 93% and 95% at both sites, respectively. These herbicides also significantly improved grain yield of wheat at Paskeville (22%) and Arthurton (38%) compared to the untreated.
- Is Part Of:
- Weed technology. Volume 34:Number 1(2020)
- Journal:
- Weed technology
- Issue:
- Volume 34:Number 1(2020)
- Issue Display:
- Volume 34, Issue 1 (2020)
- Year:
- 2020
- Volume:
- 34
- Issue:
- 1
- Issue Sort Value:
- 2020-0034-0001-0000
- Page Start:
- 19
- Page End:
- 24
- Publication Date:
- 2019-09-10
- Subjects:
- David Johnson, Corteva Agriscience
Prosulfocarb, -- triallate, -- pyroxasulfone, -- S-metolachlor, -- trifluralin, -- glyphosate, -- rigid ryegrass, Lolium rigidum Gaudin LOLRI, -- wheat, -- Triticum aestivum L. 'Chief CL Plus'
Thiocarbamates, -- herbicide resistance, -- preplant incorporated, -- weed seed set control, -- weed control
Weeds -- Periodicals
Weeds -- Control -- Periodicals
632.5 - Journal URLs:
- https://www.cambridge.org/core/journals/weed-technology ↗
- DOI:
- 10.1017/wet.2019.72 ↗
- Languages:
- English
- ISSNs:
- 0890-037X
- Deposit Type:
- Legaldeposit
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- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library STI - ELD Digital store
- Ingest File:
- 14667.xml