Weed suppressive potential of selected pasture legumes against annual weeds in southeastern Australia

Sajid Latif; Paul A. Weston; John W. Piltz; Saliya Gurusinghe; William B. Brown; Jane C. Quinn; Leslie A. Weston

doi:http://caws.org.nz/old-site/awc/2018/awc201813791.pdf

Weed suppressive potential of selected pasture legumes against annual weeds in southeastern Australia

Sajid Latif, Paul A. Weston, John W. Piltz, Saliya Gurusinghe, William B. Brown, Jane C. Quinn, Leslie A. Weston

Agricultural, Environmental and Veterinary Sciences

NSW Department of Primary Industries (NSW DPI)

Research output: Book chapter/Published conference paper › Conference paper › peer-review

Abstract

Poor adaptation of numerous annual and perennial legumes across south eastern Australia due to acidic soils, insufficient rainfall resulting in false breaks, high input costs, soil acidification and the emergence of herbicide resistant weeds have resulted in limited options for producers seeking to establish productive pastures in the Riverina region of New South Wales (NSW). To overcome these challenges, numerous novel pasture species have been selected and recently released for establishment. However, limited knowledge exists regarding their ability to suppress weeds during establishment and in subsequent years when they regenerate. Field trials were conducted at Wagga Wagga, NSW over a two year period to evaluate: (a) the suppressive potential of eight selected pasture legumes against annual weeds; and (b) the impact of autumn (March) and winter (June) sowing dates on stand establishment. Weed and crop cover and biomass were assessed each year in replicated trials in 2016–2017. Results suggested that species mixtures with more than one pasture species were not significantly different (P<0.05) in terms of establishment and subsequent weed infestation. However, autumn sowing of arrowleaf clover, yellow serradella cv. Avila and French serradella/bladder clover generally resulted in increased (P<0.05) pasture crop cover over two growing seasons. Arrowleaf clover and biserrula cv. Casbah were strong performers and produced significantly greater crop biomass and also less weed biomass. However, weed suppression and subsequent biomass was not always related to competition for resources and production of total crop biomass. This was the case for yellow serradella cv. Santorini in both 2016 and 2017 where weed biomass was significantly reduced but total crop biomass produced was limited. This suggested that factors other than resource competition, such as allelopathy, were associated with weed suppression. Arrowleaf clover, biserrula cv. Casbah and yellow serradella cv. Santorini were generally the best and most reliable annual legumes with respect to yearly regeneration and pasture weed suppression in the Riverina

Original language	English
Title of host publication	Proceedings of 21st Australian Weeds Conference
Editors	Stephen Johnson, Leslie Weston, Hanwen Wu, Bruce Auld
Place of Publication	Sydney
Publisher	Weed Society of NSW
Pages	379-382
Number of pages	4
ISBN (Print)	ISBN 9780995415911
DOIs	https://doi.org/http://caws.org.nz/old-site/awc/2018/awc201813791.pdf
Publication status	Published - 2018
Event	21st Australasian Weeds Conference (2018) - Novotel Sydney Manly Pacific, Sydney, Australia Duration: 09 Sept 2018 → 13 Sept 2018 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

Conference	21st Australasian Weeds Conference (2018)
Abbreviated title	Weed biosecurity - Protecting our future
Country/Territory	Australia
City	Sydney
Period	09/09/18 → 13/09/18
Other	The 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	http://caws.org.nz/old-site/awc_contents.php?yr=2018 (conference proceedings) https://abercrombie.eventsair.com/QuickEventWebsitePortal/21awc/21awc-web/Agenda (conference program)

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Cite this

Latif, S., Weston, P. A., Piltz, J. W., Gurusinghe, S., Brown, W. B., Quinn, J. C., & Weston, L. A. (2018). Weed suppressive potential of selected pasture legumes against annual weeds in southeastern Australia. In S. Johnson, L. Weston, H. Wu, & B. Auld (Eds.), Proceedings of 21st Australian Weeds Conference (pp. 379-382). Weed Society of NSW. https://doi.org/http://caws.org.nz/old-site/awc/2018/awc201813791.pdf

@inproceedings{d6114fca8b8e4cdc92947cd59cf41242,

title = "Weed suppressive potential of selected pasture legumes against annual weeds in southeastern Australia",

abstract = "Poor adaptation of numerous annual and perennial legumes across south eastern Australia due to acidic soils, insufficient rainfall resulting in false breaks, high input costs, soil acidification and the emergence of herbicide resistant weeds have resulted in limited options for producers seeking to establish productive pastures in the Riverina region of New South Wales (NSW). To overcome these challenges, numerous novel pasture species have been selected and recently released for establishment. However, limited knowledge exists regarding their ability to suppress weeds during establishment and in subsequent years when they regenerate. Field trials were conducted at Wagga Wagga, NSW over a two year period to evaluate: (a) the suppressive potential of eight selected pasture legumes against annual weeds; and (b) the impact of autumn (March) and winter (June) sowing dates on stand establishment. Weed and crop cover and biomass were assessed each year in replicated trials in 2016–2017. Results suggested that species mixtures with more than one pasture species were not significantly different (P<0.05) in terms of establishment and subsequent weed infestation. However, autumn sowing of arrowleaf clover, yellow serradella cv. Avila and French serradella/bladder clover generally resulted in increased (P<0.05) pasture crop cover over two growing seasons. Arrowleaf clover and biserrula cv. Casbah were strong performers and produced significantly greater crop biomass and also less weed biomass. However, weed suppression and subsequent biomass was not always related to competition for resources and production of total crop biomass. This was the case for yellow serradella cv. Santorini in both 2016 and 2017 where weed biomass was significantly reduced but total crop biomass produced was limited. This suggested that factors other than resource competition, such as allelopathy, were associated with weed suppression. Arrowleaf clover, biserrula cv. Casbah and yellow serradella cv. Santorini were generally the best and most reliable annual legumes with respect to yearly regeneration and pasture weed suppression in the Riverina",

keywords = "Hard-seeded legume, Weed suppression, Establishment, Biserrula pelecinus, Clover",

author = "Sajid Latif and Weston, {Paul A.} and Piltz, {John W.} and Saliya Gurusinghe and Brown, {William B.} and Quinn, {Jane C.} and Weston, {Leslie A.}",

note = "Includes bibliographical references.; 21st Australasian Weeds Conference (2018), Weed biosecurity - Protecting our future ; Conference date: 09-09-2018 Through 13-09-2018",

year = "2018",

doi = "http://caws.org.nz/old-site/awc/2018/awc201813791.pdf",

language = "English",

isbn = "ISBN 9780995415911",

pages = "379--382",

editor = "Stephen Johnson and Leslie Weston and Hanwen Wu and Bruce Auld",

booktitle = "Proceedings of 21st Australian Weeds Conference",

publisher = "Weed Society of NSW",

url = "http://caws.org.nz/old-site/awc_contents.php?yr=2018, https://abercrombie.eventsair.com/QuickEventWebsitePortal/21awc/21awc-web/Agenda",

}

Latif, S , Weston, PA, Piltz, JW, Gurusinghe, S, Brown, WB, Quinn, JC & Weston, LA 2018, Weed suppressive potential of selected pasture legumes against annual weeds in southeastern Australia. in S Johnson, L Weston, H Wu & B Auld (eds), Proceedings of 21st Australian Weeds Conference. Weed Society of NSW, Sydney, pp. 379-382, 21st Australasian Weeds Conference (2018), Sydney, New South Wales, Australia, 09/09/18. https://doi.org/http://caws.org.nz/old-site/awc/2018/awc201813791.pdf

Weed suppressive potential of selected pasture legumes against annual weeds in southeastern Australia. / Latif, Sajid ; Weston, Paul A.; Piltz, John W. et al.
Proceedings of 21st Australian Weeds Conference. ed. / Stephen Johnson; Leslie Weston; Hanwen Wu; Bruce Auld. Sydney: Weed Society of NSW, 2018. p. 379-382.

Research output: Book chapter/Published conference paper › Conference paper › peer-review

TY - GEN

T1 - Weed suppressive potential of selected pasture legumes against annual weeds in southeastern Australia

AU - Latif, Sajid

AU - Weston, Paul A.

AU - Piltz, John W.

AU - Gurusinghe, Saliya

AU - Brown, William B.

AU - Quinn, Jane C.

AU - Weston, Leslie A.

N1 - Includes bibliographical references.

PY - 2018

Y1 - 2018

N2 - Poor adaptation of numerous annual and perennial legumes across south eastern Australia due to acidic soils, insufficient rainfall resulting in false breaks, high input costs, soil acidification and the emergence of herbicide resistant weeds have resulted in limited options for producers seeking to establish productive pastures in the Riverina region of New South Wales (NSW). To overcome these challenges, numerous novel pasture species have been selected and recently released for establishment. However, limited knowledge exists regarding their ability to suppress weeds during establishment and in subsequent years when they regenerate. Field trials were conducted at Wagga Wagga, NSW over a two year period to evaluate: (a) the suppressive potential of eight selected pasture legumes against annual weeds; and (b) the impact of autumn (March) and winter (June) sowing dates on stand establishment. Weed and crop cover and biomass were assessed each year in replicated trials in 2016–2017. Results suggested that species mixtures with more than one pasture species were not significantly different (P<0.05) in terms of establishment and subsequent weed infestation. However, autumn sowing of arrowleaf clover, yellow serradella cv. Avila and French serradella/bladder clover generally resulted in increased (P<0.05) pasture crop cover over two growing seasons. Arrowleaf clover and biserrula cv. Casbah were strong performers and produced significantly greater crop biomass and also less weed biomass. However, weed suppression and subsequent biomass was not always related to competition for resources and production of total crop biomass. This was the case for yellow serradella cv. Santorini in both 2016 and 2017 where weed biomass was significantly reduced but total crop biomass produced was limited. This suggested that factors other than resource competition, such as allelopathy, were associated with weed suppression. Arrowleaf clover, biserrula cv. Casbah and yellow serradella cv. Santorini were generally the best and most reliable annual legumes with respect to yearly regeneration and pasture weed suppression in the Riverina

AB - Poor adaptation of numerous annual and perennial legumes across south eastern Australia due to acidic soils, insufficient rainfall resulting in false breaks, high input costs, soil acidification and the emergence of herbicide resistant weeds have resulted in limited options for producers seeking to establish productive pastures in the Riverina region of New South Wales (NSW). To overcome these challenges, numerous novel pasture species have been selected and recently released for establishment. However, limited knowledge exists regarding their ability to suppress weeds during establishment and in subsequent years when they regenerate. Field trials were conducted at Wagga Wagga, NSW over a two year period to evaluate: (a) the suppressive potential of eight selected pasture legumes against annual weeds; and (b) the impact of autumn (March) and winter (June) sowing dates on stand establishment. Weed and crop cover and biomass were assessed each year in replicated trials in 2016–2017. Results suggested that species mixtures with more than one pasture species were not significantly different (P<0.05) in terms of establishment and subsequent weed infestation. However, autumn sowing of arrowleaf clover, yellow serradella cv. Avila and French serradella/bladder clover generally resulted in increased (P<0.05) pasture crop cover over two growing seasons. Arrowleaf clover and biserrula cv. Casbah were strong performers and produced significantly greater crop biomass and also less weed biomass. However, weed suppression and subsequent biomass was not always related to competition for resources and production of total crop biomass. This was the case for yellow serradella cv. Santorini in both 2016 and 2017 where weed biomass was significantly reduced but total crop biomass produced was limited. This suggested that factors other than resource competition, such as allelopathy, were associated with weed suppression. Arrowleaf clover, biserrula cv. Casbah and yellow serradella cv. Santorini were generally the best and most reliable annual legumes with respect to yearly regeneration and pasture weed suppression in the Riverina

KW - Hard-seeded legume

KW - Weed suppression

KW - Establishment

KW - Biserrula pelecinus

KW - Clover

U2 - http://caws.org.nz/old-site/awc/2018/awc201813791.pdf

DO - http://caws.org.nz/old-site/awc/2018/awc201813791.pdf

M3 - Conference paper

SN - ISBN 9780995415911

SP - 379

EP - 382

BT - Proceedings of 21st Australian Weeds Conference

A2 - Johnson, Stephen

A2 - Weston, Leslie

A2 - Wu, Hanwen

A2 - Auld, Bruce

PB - Weed Society of NSW

CY - Sydney

T2 - 21st Australasian Weeds Conference (2018)

Y2 - 9 September 2018 through 13 September 2018

ER -

Latif S , Weston PA, Piltz JW, Gurusinghe S, Brown WB, Quinn JC et al. Weed suppressive potential of selected pasture legumes against annual weeds in southeastern Australia. In Johnson S, Weston L, Wu H, Auld B, editors, Proceedings of 21st Australian Weeds Conference. Sydney: Weed Society of NSW. 2018. p. 379-382 doi: http://caws.org.nz/old-site/awc/2018/awc201813791.pdf

Weed suppressive potential of selected pasture legumes against annual weeds in southeastern Australia

Abstract

Conference

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