Herbicide Options to Control Naturalised Infestations of Cereus uruguayanus in Rangeland Environments of Australia

Campbell, S. D.; Bajwa, Ali Ahsan; Hosking, Kelsey; Brazier, Dannielle A.; Mellor, Vincent; Perkins, Michael V.

doi:10.3390/plants10102227

Cited by 3 publications

(5 citation statements)

References 18 publications

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“…The results of the foliar herbicide study support previous work demonstrating that mixtures with triclopyr and picloram or with triclopyr, picloram, and aminopyralid, are highly effective as foliar applications against other woody species (Campbell et al 2021; Gawn et al 2013; Webb and Harrington 2005). However, the evidence in this study was not strong that the mixture was much more effective against old man's beard than triclopyr alone, or metsulfuron, which are less persistent in the environment.…”

Section: Resultssupporting

confidence: 84%

“…Aminopyralid structurally resembles picloram and is likewise persistent in plant tissue and soil, with high soil mobility (Ferrell et al 2006; Kline et al 2005; MacBean 2010). These pyridine herbicides are commonly mixed together to achieve improved control of brush weeds (Campbell et al 2021; Gawn et al 2013; Moore et al 2010; Tran et al 2015; Webb and Harrington 2005). Although metsulfuron can be highly mobile in some soils (Thompson et al 1992; USDA-ARS 1995), studies have shown it to have relatively low residual soil activity, from 5 to 63 d after treatment (Harrington et al 2017; Ismail and Lee 1995; Trabue et al 2006; Tran et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Glyphosate is strongly adsorbed by soil, and therefore has very low mobility (Feng and Thompson 1990; Newton et al 1984; Okada et al, 2019). Campbell et al (2021) reported 100% control of Cereus uruguayanus Ritt. ex Kiesl.…”

Section: Introductionmentioning

confidence: 99%

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Efficacy of herbicides for selective control of an invasive liana, old man’s beard (Clematis vitalba)

Jarvis-Lowry,

Harrington,

Ghanizadeh

et al. 2023

Weed Technol

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Old man’s beard is a woody liana that has become an invasive weed in many areas of its introduction, through its vigorous spread and negative impacts on the tree hosts it climbs. Control techniques that improve precision and reduce non-target damage are increasingly preferred for weed control yet have not been compared in published research for use against old man’s beard. Field experiments in New Zealand were conducted to: 1) assess targeted herbicide techniques for control of its climbing stems when growing among trees and 2) assess foliar herbicides for control of creeping stems in ruderal sites. For climbing stems, triclopyr in oil was applied around the circumference of woody stems near their base, which was compared with cutting the stems and applying concentrated glyphosate gel (45% ai) to each cut end. Herbicides were applied in autumn directly to individual stem bases of the weed, thereby protecting tree hosts and other non-target vegetation. The basal application of triclopyr to intact stems was highly effective (> 95% mortality) with no damage to nearby trees noted. The glyphosate gel applications to cut stems was less effective (56% mortality by 2 years after treatment). For creeping stems in grass-dominated ruderal sites, selective foliar herbicide sprays had not been previously compared side-by-side for control of old man’s beard. Three selective sprays that do not damage existing grass cover were applied in autumn at their recommended rates: 1) metsulfuron; 2) triclopyr; and 3) a mixture of triclopyr, picloram, and aminopyralid. All herbicide treatments gave effective control, although metsulfuron had a negative effect on grass vigour which might allow new establishment of old man’s beard seedlings by competitive release. These results provide effective options that reduce non-target damage for control of both climbing and creeping old man’s beard stems.

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Section: Resultssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

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Efficacy of herbicides for selective control of an invasive liana, old man’s beard (Clematis vitalba)

Jarvis-Lowry,

Harrington,

Ghanizadeh

et al. 2023

Weed Technol

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“…Twenty-seven cactus species are listed as Weeds of National Significance in Australia, all of which belong to the Opuntioideae subfamily (flattened-padded growth forms) and the genera Opuntia and Cylindropuntia (Sheehan and Potter 2017). However, several species from other subfamilies are emerging or major weeds in Australia (Campbell et al 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Cereus uruguayanus is also present in several locations in New South Wales (Hosking et al 2007). It is most prevalent in mixed eucalypt–brigalow woodlands on light clay soils but also occurs in areas of cleared improved pasture and on a range of soil types (Campbell et al 2021). In South Africa, the mealybug, Hypogeococcus sp.…”

Section: Introductionmentioning

confidence: 99%

Germination responses of the invasive hedge cactus (Cereus uruguayanus) to environmental factors

Panetta,

Campbell,

Brooks

et al. 2024

Weed Sci

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Hedge cactus (Cereus uruguayanus R. Kiesling; syn. Cereus hildmannianus K. Schum.) is a columnar cactus that was introduced to Australia as an ornamental plant and has since become invasive in subhumid regions of Queensland and New South Wales. Compared to its congener Cereus jamacaru DC. (which currently is invasive in both eastern and southern Africa), information on seed biology of C. uruguayanus is lacking. Experiments were conducted to study the effects of alternating day/night temperature, salt stress, water stress, and burial depth on germination and seedling emergence of four seed accessions of C. uruguayanus. Seeds were also subjected to a Controlled Aging Test (CAT) to obtain an estimate of potential persistence under field conditions. The optimum temperature regime for germination of all accessions was 30/20 C. Germination decreased with an increase in sodium chloride (NaCl) concentrations, but germination of all accessions (range 26–81%) occurred at 160 mM NaCl, indicating very high salt tolerance. Seed germination gradually decreased with an increase in water stress, but germination in all accessions (range 19–47%) occurred at -0.8 MPa. Seed viability and potential germinability were unaffected by exposure to salt level (320 mM NaCl) and water (-1.6 MPa) stress under which germination did not occur. Germination responses to all three factors were generally similar to those documented for C. jamacaru. The emergence of C. uruguayanus decreased with an increase in seed burial depth. The highest emergence (43%) was recorded for surface-sown seeds and emergence was reduced to 0 at a burial depth of 2 cm. CAT results for two seed accessions indicated that seeds of C. uruguayanus are likely to demonstrate extended (> 3 yr) persistence under field conditions, a prediction that is supported by evidence that germination of its small (2 mm) seeds is markedly reduced by burial.

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A novel stem-applied herbicide-capsule methodology for control of the invasive cactus Cereus uruguayanus

et al. 2022

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Cereus uruguayanus R.Kiesling is a naturalised, non-opuntioid cactus that has formed large and dense infestations at several locations in the northern Australian rangelands. Of the Cactoideae subfamily, it typically grows into a large, spiny, single- or multi-stemmed candelabra-shaped cactus. While not classified as a Weed of National Significance (WONS) in Australia, it is causing increasing concern, with some local governments declaring it under their local laws. Recent research has identified several herbicides that control C. uruguayanus by using a range of techniques, including basal-bark, cut-stump, foliar, and stem injection applications. Of these, stem injection is one of the recommended options where weeds grow among desirable vegetation because the risk of non-target damage is minimised. This study evaluated C. uruguayanus control using a range of encapsulated dry-formulation herbicides from BioHerbicides Australia (BHA Pty Ltd), using their novel stem-implantation system (Injecta®). In May 2018, an experiment was established in central Queensland to compare the efficacy of six encapsulated herbicides (aminopyralid + metsulfuron-methyl, clopyralid, glyphosate, hexazinone, metsulfuron-methyl, triclopyr + picloram) against an untreated control. Glyphosate was the fastest-acting herbicide, followed by aminopyralid + metsulfuron-methyl and metsulfuron-methyl, with triclopyr + picloram much slower to act. Nevertheless, all four herbicides eventually caused high mortality (≥85%). In contrast, clopyralid and hexazinone were ineffective at the applied rates. Future research is recommended to compare the cost effectiveness of this system against other techniques, particularly those used for stem-injection applications.

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Herbicide Options to Control Naturalised Infestations of Cereus uruguayanus in Rangeland Environments of Australia

Cited by 3 publications

References 18 publications

Efficacy of herbicides for selective control of an invasive liana, old man’s beard (Clematis vitalba)

Efficacy of herbicides for selective control of an invasive liana, old man’s beard (Clematis vitalba)

Germination responses of the invasive hedge cactus (Cereus uruguayanus) to environmental factors

A novel stem-applied herbicide-capsule methodology for control of the invasive cactus Cereus uruguayanus

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