Herbicide Application Strategies for the Control of Rigid Ryegrass (<i>Lolium rigidum</i>) in Wide-Row Faba Bean (<i>Vicia faba</i>) in Southern Australia

Kleemann, Samuel G. L.; Gill, Gurjeet

doi:10.1614/wt-d-11-00030.1

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…Therefore, greater rainfall after herbicide application in 2012 may be responsible for better weed control with propyzamide in 2012 than in 2013. Kleemann and Gill (2012) reported much higher levels of rigid ryegrass control with propyzamide (. 85%) in faba bean; however, the herbicide was applied early postsowing PRE rather than PPI as in this study.…”

Section: à1795mentioning

confidence: 99%

Alternative Herbicides for the Management of Clethodim-Resistant Rigid Ryegrass (Lolium rigidum) in Faba Bean (Vicia fabaL.) in Southern Australia

et al. 2015

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Two field experiments were conducted during 2012 and 2013 at Roseworthy, South Australia to identify effective herbicide options for the management of clethodim-resistant rigid ryegrass in faba bean. Dose–response experiments confirmed resistance in both field populations (B3, 2012 and E2, 2013) to clethodim and butroxydim. Sequencing of the target site of acetyl coenzyme A carboxylase gene in both populations identified an aspartate-2078-glycine mutation. Although resistance of B3 and E2 populations to clethodim was similar (16.5- and 21.4-fold more resistant than the susceptible control SLR4), the B3 population was much more resistant to butroxydim (7.13-fold) than E2 (2.24-fold). Addition of butroxydim to clethodim reduced rigid ryegrass plant density 60 to 80% and seed production 71 to 88% compared with the standard grower practice of simazine PPI plus clethodim POST. Clethodim + butroxydim combination had the highest grain yield of faba bean (980 to 2,400 kg ha−1). Although propyzamide and pyroxasulfone plus triallate PPI provided the next highest levels of rigid ryegrass control (< 60%), these treatments were more variable and unable to reduce seed production (6,354 to 13,570 seeds m−2) to levels acceptable for continuous cropping systems.

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Section: à1795mentioning

confidence: 99%

Alternative Herbicides for the Management of Clethodim-Resistant Rigid Ryegrass (Lolium rigidum) in Faba Bean (Vicia fabaL.) in Southern Australia

et al. 2015

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“…Propyzamide can be an effective option for rigid ryegrass control provided sufficient rainfall is received after planting to keep the seedbed moist (Walker and Roberts 1975). Kleemann and Gill (2012) also reported effective control of rigid ryegrass with propyzamide (. 85%) in fava bean (Vicia faba L. [2014]) provided inferior weed control compared with farmers' standard practice in 2014 but not in 2013.…”

Section: Resultsmentioning

confidence: 99%

Alternative Herbicides for the Control of Clethodim-Resistant Rigid Ryegrass (Lolium rigidum) in Clearfield Canola in Southern Australia

et al. 2016

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Rigid ryegrass is the most-troublesome, herbicide-resistant weed in cropping systems of southern Australia. Field experiments were undertaken at Roseworthy, South Australia, in 2013 and 2014, to identify effective herbicide options for the control of clethodim-resistant rigid ryegrass in Clearfield canola. PPI trifluralin + triallate followed by (fb) POST imazamox + imazapyr + clethodim + butroxydim had the lowest plant density of rigid ryegrass in 2014 and provided superior control compared with the standard grower practice of PPI trifluralin + triallate fb POST imazamox + imazapyr + clethodim in 1 of 2 yr. Propyzamide either alone or as a split application (PPI fb POST) or in combination with clethodim provided similar rigid ryegrass control to that of the standard grower practice (38 to 553 plants m−2). Rigid ryegrass treated with PPI dimethenamid-P, pethoxamid, pethoxamid + triallate, and PPI trifluralin fb carbetamide POST produced significantly more seeds than the standard grower practice, which would lead to reinfestation of subsequent crops. Canola yield responded positively to effective herbicide treatments, especially in 2014, when rigid ryegrass density was greater. PPI dimethenamid-P and pethoxamid alone or in combination with triallate and propyzamide were ineffective in reducing rigid ryegrass density and seed production to levels acceptable for continuous cropping systems.

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“…50% in 2014. Pyroxasulfone, propyzamide, and imazamox have been successfully used to control other grass weed species in broadleaf crops (Blackshaw 1998;Kleemann and Gill 2012;Nelson and Renner 1998;Tidemann et al 2014). Dimethenamid-P was less effective in reducing smooth barley seed production, but significantly increased grain and forage yields compared with the non- Figure 1.…”

Section: Resultsmentioning

confidence: 99%

Management of ACCase-Inhibiting Herbicide-Resistant Smooth Barley (Hordeum glaucum) in Field Pea with Alternative Herbicides

et al. 2016

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Smooth barley is an annual weed species that is infesting crops and pastures in South Australia. Complicating control options is the presence of herbicide-resistant biotypes. A field trial was conducted to identify alternative herbicides for the management of acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicide-resistant smooth barley in field pea. Preplant (PP) soil applications of pyroxasulfone; prosulfocarb plus S-metolachlor; dimethenamid-P; propyzamide; trifluralin alone or with triallate or with diuron; or imazamox applied POST were evaluated for their effectiveness and crop safety. Propyzamide, pyroxasulfone, or imazamox applied POST provided a high level of smooth barley control, did not cause any crop injury, and increased field pea grain or forage yield compared with the nontreated. Furthermore, propyzamide or pyroxasulfone reduced panicle density and seed production in smooth barley, whereas the effectiveness of POST imazamox varied over the two seasons. Dimethenamid-P reduced the impact of smooth barley on field pea yield, but cause stunting, and was less effective than propyzamide, pyroxasulfone, and imazamox in reducing smooth barley seed production. Negative relationship between field pea yield and smooth barley panicle density indicated that smooth barley is highly competitive in field pea crops and can cause large yield losses. The results of this investigation suggest that propyzamide or pyroxasulfone applied PP and imazamox applied POST could be used effectively in the field for the management of ACCase-inhibiting herbicide-resistant smooth barley in South Australia.

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Herbicide Application Strategies for the Control of Rigid Ryegrass (Lolium rigidum) in Wide-Row Faba Bean (Vicia faba) in Southern Australia

Cited by 5 publications

References 11 publications

Alternative Herbicides for the Management of Clethodim-Resistant Rigid Ryegrass (Lolium rigidum) in Faba Bean (Vicia fabaL.) in Southern Australia

Alternative Herbicides for the Management of Clethodim-Resistant Rigid Ryegrass (Lolium rigidum) in Faba Bean (Vicia fabaL.) in Southern Australia

Alternative Herbicides for the Control of Clethodim-Resistant Rigid Ryegrass (Lolium rigidum) in Clearfield Canola in Southern Australia

Management of ACCase-Inhibiting Herbicide-Resistant Smooth Barley (Hordeum glaucum) in Field Pea with Alternative Herbicides

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