Chemical control of brome grasses (&lt;i&gt;Bromus spp&lt;/i&gt;) in cereals

Dastgheib, F.; Rolston, M. P.; Archie, W. J.

doi:10.30843/nzpp.2003.56.6096

Cited by 17 publications

(18 citation statements)

References 5 publications

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“…The genus Bromus is considered a significant emerging threat to grain growers, because there is currently no efficient control for this weed (Dastgheib et al, 2003), especially among barley crops. Moreover, there is particular research interest in the genus, because it contains species considered invasive in some parts of the world, such as Bromus tectorum L. (Mack, 1986;Knapp, 1996).…”

Section: Introductionmentioning

confidence: 99%

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Effects of light conditions and after‐ripening time on seed dormancy loss of Bromus diandrus Roth.

Monte

Dorado

2011

Weed Research

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Del Monte JP & Dorado J (2011). Effects of light conditions and after‐ripening time on seed dormancy loss of Bromus diandrus Roth. Weed Research51, 581–590. Summary Bromus diandrus is an emerging problem in barley crops in temperate climates, owing to its ability to adapt to certain farming techniques, as well as the absence of an efficient means of control. The aim of this study was to evaluate the germination of B. diandrus as a function of light conditions, time after ripening, temperature and water potential. Our results indicate that light conditions were the principal factor affecting germination and that seeds had negative photoblastism. Darkness modified the hydrotime parameters of the seeds somewhat, for example, by decreasing the values of Ψb and by favouring dormancy loss. The after‐ripening time significantly modified the hydrotime parameters of the seeds, causing Ψb to drift towards more negative values (greater dormancy loss) as the after‐ripening time increased. The combination of both variables explains the dormancy dynamics of this species in Mediterranean climates that are characterised by two distinct germination flushes, coinciding with two periods when soil humidity and temperature are not limiting. The first and main cohort of seedlings would emerge in autumn, originating from young buried seeds. A second cohort would emerge in the spring, from mature seeds on the surface of the soil.

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Section: Introductionmentioning

confidence: 99%

“…The genus Bromus is considered a significant emerging threat to grain growers, because there is currently no efficient control for this weed (Dastgheib et al. , 2003), especially among barley crops.…”

Section: Introductionmentioning

confidence: 99%

Effects of light conditions and after‐ripening time on seed dormancy loss of Bromus diandrus Roth.

Monte

Dorado

2011

Weed Research

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“…Ripgut brome (Bromus diandrus Roth), an annual grass originating from the Mediterranean region, is an invasive weed on many arable and dryland livestock properties and in waste places in the South and North Islands of New Zealand (Edgar & Connor 2000). On arable farms ripgut brome can reduce wheat and barley yields, and herbicide programmes have been developed for the weed's control (Dastgheib et al 2003). In hill and high country pastures, ripgut brome seeds (.5-2.5 cm) can contaminate wool, pelts and carcasses of sheep.…”

Section: Introductionmentioning

confidence: 99%

Ripgut brome (<i>Bromus diandrus</i>) distribution in relation to topography and management on seven high country properties in the South Island

Tozer

Marshall²,

Sedcole³

et al. 2007

NZPP

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Seeds of ripgut brome an annual grass can contaminate the wool pelt and carcasses of sheep grazing on high country properties The distribution of ripgut brome on seven high country properties in Marlborough Canterbury and Otago was determined during December 2006 to February 2007 The presence of ripgut brome was measured in paddocks of different management intensities at altitudes ranging from 400 to 1400 m Ripgut brome grass presence was lower in sites managed less intensively (eg less fertiliser and oversowing) in hard than laxly grazed sites and in sites of high exotic perennial grass cover It was more prevalent on stock camps than off stock camps and on steeper slopes and sunny aspects but was unaffected by legume cover shrub presence or altitude The results suggest that increased grazing intensity and enhanced plant competition are methods that may be used to suppress ripgut brome on hill and high country properties

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“…Bromus catharticus originated in the Pampas of South America and was widely introduced into temperate regions worldwide ( Planchuelo and Peterson, 2000 ; Planchuelo, 2006 ), but it also escaped into the wild in four continents ( Dastgheib et al, 2003 ; Di Tomaso and Healy, 2007 ; Verloove, 2012 ; Muzafar et al, 2016 ; Bromilow, 2018 ). This is an annual, biennial, or perennial species and it shows two types of flowering, cleistogamic, and chasmogamic, but its reproductive behavior corresponds to that of an autogamous species with a low rate of allogamy ( Naranjo, 1992 ; Gutierrez and Pensiero, 1998 ).…”

Section: Introductionmentioning

confidence: 99%

First Case of Glyphosate Resistance in Bromus catharticus Vahl.: Examination of Endowing Resistance Mechanisms

et al. 2021

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Bromus catharticus Vahl. has been used as a valuable forage crop, but it has also been noted as a weed of winter crops and an invader in several countries. In Argentina, a putative glyphosate-resistant population of B. catharticus was identified as a consequence of the lack of effective control with glyphosate in the pre-sowing of wheat. Plant survival and shikimate accumulation analysis demonstrated a lower glyphosate-sensitivity of this population in comparison to a susceptible B. catharticus population. The resistant population was 4-fold more resistant to glyphosate than its susceptible counterpart. There was no evidence of target-site mechanisms of glyphosate resistance or an enhanced capacity to metabolize glyphosate in the resistant population. However, the resistant plants showed a lower foliar retention of glyphosate (138.34 μl solution g−1 dry weight vs. 390.79 μl solution g−1 dry weight), a reduced absorption of 14C-glyphosate (54.18 vs. 73.56%) and lower translocation of 14C-glyphosate from the labeled leaf (27.70 vs. 62.36%). As a result, susceptible plants accumulated a 4.1-fold higher concentration of 14C-glyphosate in the roots compared to resistant plants. The current work describes the first worldwide case of glyphosate resistance in B. catharticus. A reduced foliar retention of herbicide, a differential rate of glyphosate entry into leaves and an altered glyphosate translocation pattern would be the most likely mechanisms of glyphosate exclusion.

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Chemical control of brome grasses (<i>Bromus spp</i>) in cereals

Cited by 17 publications

References 5 publications

Effects of light conditions and after‐ripening time on seed dormancy loss of Bromus diandrus Roth.

Effects of light conditions and after‐ripening time on seed dormancy loss of Bromus diandrus Roth.

Ripgut brome (<i>Bromus diandrus</i>) distribution in relation to topography and management on seven high country properties in the South Island

First Case of Glyphosate Resistance in Bromus catharticus Vahl.: Examination of Endowing Resistance Mechanisms

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