The effect of integrating defoliation with herbicides on barley grass survival in a legume pasture

Research output: Book chapter/Published conference paperConference paper

Abstract

Barley grass (Hordeum spp.) is an annual weed of southern Australian mixed farming regions causing significant crop revenue loss and carcass
damage in grazing sheep. Increased reliance on herbicides for management of barley grass has led to the development of herbicide resistance across southern
Australia. Integrated weed management tactics have recently been used to manage barley grass populations, and have proven effective in reducing reliance on herbicides for management. Field studies performed in 2016 and 2017 examined the use of post-emergent herbicides and strategic defoliation through mowing on a barley grass infestation in a mixed legume pasture in Wagga Wagga, NSW. This paper presents data from the first year of the study. Significant differences between herbicide-only treatments revealed propaquizafop to be 99% effective in reducing barley grass survival and
seed production in contrast to paraquat, which was generally ineffective. A significant interaction between mowing and date also influenced barley grass biomass, and complex interactions between herbicide, mowing and date influenced barley grass height. Barley grass control, as a result of propaquizafop application, was accompanied by an increase in the biomass of clover and other weeds including Vulpia spp., also a known carcass contaminant.
Original languageEnglish
Title of host publicationProceedings of the 21st Australian Weed Conference
Subtitle of host publicationWeed Biosecurity - Protecting our Future
EditorsStephen Johnson, Leslie Weston, Hanwen Wu , Bruce Auld
Place of PublicationSydney
PublisherWeed Society of NSW
Pages295-299
Number of pages5
ISBN (Print)9780995415911
Publication statusPublished - 2018
Event21st Australasian Weeds Conference 2018: Weed biosecurity - Protecting our future - Novotel Sydney Manly Pacific, Manly, Australia
Duration: 09 Sep 201812 Sep 2018
https://www.21awc.org.au/
http://caws.org.nz/old-site/awc_contents.php?yr=2018 (conference proceedings)
https://abercrombie.eventsair.com/QuickEventWebsitePortal/21awc/21awc-web/Agenda (conference program)

Conference

Conference21st Australasian Weeds Conference 2018
CountryAustralia
CityManly
Period09/09/1812/09/18
OtherThe Weed Society of New South Wales Inc., on behalf of the Council of Australasian Weed Societies Inc., will be hosting the 21st Australasian Weeds Conference in the popular Sydney beach side suburb of Manly from 9 - 12 September 2018.  An assortment of field trips will be hosted on Thursday 13 September 2018.

This biennial conference carries on a long tradition of bringing the weed management community together to discuss new developments and share information about cutting-edge and best weed management practices.

The conference attracts over 250 delegates from across Australasia and globally.  Delegates will come together to network with peers, engage with industry sponsors, listen and participate in presentations and field trips on a variety of topics including; 
- New technologies in weed management.
- Biological, mechanical, and chemical weed control and research.
- Herbicide resistance.
- Weeds of crops and pastures.
- Environmental weeds and Weeds of National Significance.
Internet address

Fingerprint

forage legumes
defoliation
herbicides
barley
grasses
propaquizafop
mowing
Vulpia
integrated weed management
Hordeum
annual weeds
herbicide resistance
paraquat
biomass
income
farming systems
weeds
grazing
sheep
crops

Cite this

Kelly, J., Brown, W., Broster, J., Weston, P., Robinson, W., Quinn, J., & Weston, L. (2018). The effect of integrating defoliation with herbicides on barley grass survival in a legume pasture. In S. Johnson, L. Weston, H. Wu , & B. Auld (Eds.), Proceedings of the 21st Australian Weed Conference: Weed Biosecurity - Protecting our Future (pp. 295-299). Sydney: Weed Society of NSW.
Kelly, Jane ; Brown, William ; Broster, John ; Weston, Paul ; Robinson, Wayne ; Quinn, Jane ; Weston, Leslie. / The effect of integrating defoliation with herbicides on barley grass survival in a legume pasture. Proceedings of the 21st Australian Weed Conference: Weed Biosecurity - Protecting our Future. editor / Stephen Johnson ; Leslie Weston ; Hanwen Wu ; Bruce Auld. Sydney : Weed Society of NSW, 2018. pp. 295-299
@inproceedings{c13a8fa91af14bbeb35b3ce2961ca85c,
title = "The effect of integrating defoliation with herbicides on barley grass survival in a legume pasture",
abstract = "Barley grass (Hordeum spp.) is an annual weed of southern Australian mixed farming regions causing significant crop revenue loss and carcassdamage in grazing sheep. Increased reliance on herbicides for management of barley grass has led to the development of herbicide resistance across southernAustralia. Integrated weed management tactics have recently been used to manage barley grass populations, and have proven effective in reducing reliance on herbicides for management. Field studies performed in 2016 and 2017 examined the use of post-emergent herbicides and strategic defoliation through mowing on a barley grass infestation in a mixed legume pasture in Wagga Wagga, NSW. This paper presents data from the first year of the study. Significant differences between herbicide-only treatments revealed propaquizafop to be 99{\%} effective in reducing barley grass survival andseed production in contrast to paraquat, which was generally ineffective. A significant interaction between mowing and date also influenced barley grass biomass, and complex interactions between herbicide, mowing and date influenced barley grass height. Barley grass control, as a result of propaquizafop application, was accompanied by an increase in the biomass of clover and other weeds including Vulpia spp., also a known carcass contaminant.",
author = "Jane Kelly and William Brown and John Broster and Paul Weston and Wayne Robinson and Jane Quinn and Leslie Weston",
year = "2018",
language = "English",
isbn = "9780995415911",
pages = "295--299",
editor = "Johnson, {Stephen } and Weston, {Leslie } and {Wu }, {Hanwen } and Auld, {Bruce }",
booktitle = "Proceedings of the 21st Australian Weed Conference",
publisher = "Weed Society of NSW",

}

Kelly, J, Brown, W, Broster, J, Weston, P, Robinson, W, Quinn, J & Weston, L 2018, The effect of integrating defoliation with herbicides on barley grass survival in a legume pasture. in S Johnson, L Weston, H Wu & B Auld (eds), Proceedings of the 21st Australian Weed Conference: Weed Biosecurity - Protecting our Future. Weed Society of NSW, Sydney, pp. 295-299, 21st Australasian Weeds Conference 2018, Manly, Australia, 09/09/18.

The effect of integrating defoliation with herbicides on barley grass survival in a legume pasture. / Kelly, Jane; Brown, William; Broster, John; Weston, Paul; Robinson, Wayne; Quinn, Jane; Weston, Leslie.

Proceedings of the 21st Australian Weed Conference: Weed Biosecurity - Protecting our Future. ed. / Stephen Johnson; Leslie Weston; Hanwen Wu ; Bruce Auld. Sydney : Weed Society of NSW, 2018. p. 295-299.

Research output: Book chapter/Published conference paperConference paper

TY - GEN

T1 - The effect of integrating defoliation with herbicides on barley grass survival in a legume pasture

AU - Kelly, Jane

AU - Brown, William

AU - Broster, John

AU - Weston, Paul

AU - Robinson, Wayne

AU - Quinn, Jane

AU - Weston, Leslie

PY - 2018

Y1 - 2018

N2 - Barley grass (Hordeum spp.) is an annual weed of southern Australian mixed farming regions causing significant crop revenue loss and carcassdamage in grazing sheep. Increased reliance on herbicides for management of barley grass has led to the development of herbicide resistance across southernAustralia. Integrated weed management tactics have recently been used to manage barley grass populations, and have proven effective in reducing reliance on herbicides for management. Field studies performed in 2016 and 2017 examined the use of post-emergent herbicides and strategic defoliation through mowing on a barley grass infestation in a mixed legume pasture in Wagga Wagga, NSW. This paper presents data from the first year of the study. Significant differences between herbicide-only treatments revealed propaquizafop to be 99% effective in reducing barley grass survival andseed production in contrast to paraquat, which was generally ineffective. A significant interaction between mowing and date also influenced barley grass biomass, and complex interactions between herbicide, mowing and date influenced barley grass height. Barley grass control, as a result of propaquizafop application, was accompanied by an increase in the biomass of clover and other weeds including Vulpia spp., also a known carcass contaminant.

AB - Barley grass (Hordeum spp.) is an annual weed of southern Australian mixed farming regions causing significant crop revenue loss and carcassdamage in grazing sheep. Increased reliance on herbicides for management of barley grass has led to the development of herbicide resistance across southernAustralia. Integrated weed management tactics have recently been used to manage barley grass populations, and have proven effective in reducing reliance on herbicides for management. Field studies performed in 2016 and 2017 examined the use of post-emergent herbicides and strategic defoliation through mowing on a barley grass infestation in a mixed legume pasture in Wagga Wagga, NSW. This paper presents data from the first year of the study. Significant differences between herbicide-only treatments revealed propaquizafop to be 99% effective in reducing barley grass survival andseed production in contrast to paraquat, which was generally ineffective. A significant interaction between mowing and date also influenced barley grass biomass, and complex interactions between herbicide, mowing and date influenced barley grass height. Barley grass control, as a result of propaquizafop application, was accompanied by an increase in the biomass of clover and other weeds including Vulpia spp., also a known carcass contaminant.

M3 - Conference paper

SN - 9780995415911

SP - 295

EP - 299

BT - Proceedings of the 21st Australian Weed Conference

A2 - Johnson, Stephen

A2 - Weston, Leslie

A2 - Wu , Hanwen

A2 - Auld, Bruce

PB - Weed Society of NSW

CY - Sydney

ER -

Kelly J, Brown W, Broster J, Weston P, Robinson W, Quinn J et al. The effect of integrating defoliation with herbicides on barley grass survival in a legume pasture. In Johnson S, Weston L, Wu H, Auld B, editors, Proceedings of the 21st Australian Weed Conference: Weed Biosecurity - Protecting our Future. Sydney: Weed Society of NSW. 2018. p. 295-299