Mesotrione Combinations with Atrazine and Bentazon for Yellow and Purple Nutsedge (<i>Cyperus Esculentus</i>and<i>C. Rotundus</i>) Control in Corn

Armel, Gregory R.; Wilson, H. R.; Richardson, Robert J.; Whaley, Cory M.; Hines, Thomas E.

doi:10.1614/wt-07-178.1

Cited by 16 publications

(14 citation statements)

References 28 publications

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“…Mesotrione, an HPPD-inhibitor, plus bentazon in mixture improved the control of yellow nutsedge over either herbicide applied alone; however, the control achieved was not considered commercially acceptable (Armel et al, 2008). Mesotrione has shown better control of purple (Cyperus rotundus) and yellow nutsedge (C. esculentus) when applied in combination with bentazon than with atrazine (both PSII inhibitors) (Armel et al, 2008). In another study, the tank mixture of atrazine plus tembotrione in sweet corn showed higher and more consistent weed control than tembotrione applied alone (Williams et al, 2011).…”

Section: Introductionmentioning

confidence: 94%

“…Bentazon belongs to inhibitors of photosystem II (PSII) and is used for postemergence control of broadleaf weeds and sedges. It has been used in tank mixtures with HPPD herbicides to increase weed control (Armel et al, 2008;Walsh et al, 2012). Both PSII and HPPD inhibitors cause inhibition of electron transfer between the plant photosystems, resulting in oxidative stress and reactive oxygen radicals that damage cellular constituents (Choe et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Previous research reported synergism between PSII and HPPD inhibitors when applied POST (Bollman et al, 2008). Mesotrione, an HPPD-inhibitor, plus bentazon in mixture improved the control of yellow nutsedge over either herbicide applied alone; however, the control achieved was not considered commercially acceptable (Armel et al, 2008). Mesotrione has shown better control of purple (Cyperus rotundus) and yellow nutsedge (C. esculentus) when applied in combination with bentazon than with atrazine (both PSII inhibitors) (Armel et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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CHEMICAL OPTIONS FOR THE CONTROL OF SILVERLEAF NIGHTSHADE (Solanum elaeagnifolium)

Gitsopoulos¹,

Damalas

Georgoulas³

2017

Planta daninha

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Silverleaf nightshade is a difficult-to-control perennial weed. Field experiments were conducted in northern Greece to evaluate the control of silverleaf nightshade with POST applications of glufosinate (1,500 g a.i. ha-1), glyphosate (3,600 g a.i. ha-1), tembotrione (148.5 g a.i. ha-1), and a mixture of tembotrione plus bentazon (148.5 plus 1,440 g a.i. ha-1) at an early vegetative stage (plant height 10-15 cm) and at the beginning of flowering (plant height 30-50 cm). Glufosinate provided > 95% control of silverleaf nightshade from 7 to 39 days after treatment (DAT), regardless of the vegetative stage at herbicide application. Similarly, glyphosate provided up to 90% control around 39 DAT at either growth stage applied, exhibiting gradually increasing efficacy. Tembotrione alone controlled silverleaf nightshade 85% when applied at the early vegetative stage and 48% when applied at the beginning of flowering. The mixture of tembotrione plus bentazon applied at the beginning of flowering exhibited 74% control at 21 DAT; however, the control was decreased to 41% at 35 DAT. When the mixture was applied at the early vegetative stage, S. elaeagnifolium control was 61% at 23 DAT, which was decreased to 27% at 39 DAT. Glufosinate and glyphosate were found to be reliable options for control of silverleaf nightshade when applied at either weed growth stage; tembotrione could be also another reliable option, however, when applied only at an early vegetative stage. The results have significant implications for developing appropriate management practices for silverleaf nightshade, taking into account chemical options for preventing the evolution of herbicide resistance.

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CHEMICAL OPTIONS FOR THE CONTROL OF SILVERLEAF NIGHTSHADE (Solanum elaeagnifolium)

Gitsopoulos¹,

Damalas

Georgoulas³

2017

Planta daninha

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“…sativus Boeckeler. Recent field and glasshouse studies with different herbicides such as glyphosate (Felix et al ., ), glyphosate plus acetolactate synthase (ALS)‐inhibiting herbicides (Nelson & Renner, ), mesotrione (McCurdy et al ., ) and combinations such as mesotrione with atrazine and bentazon (Armel et al ., ) have led to insights into herbicidal response regarding regrowth and tuber production. However, systematic comparison of herbicide sensitivity profiles between different biotypes has not been made, even after Pereira et al .…”

Section: Introductionmentioning

confidence: 99%

Differences in growth and herbicide sensitivity among Cyperus esculentus clones found in Belgian maize fields

et al. 2017

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Summary Cyperus esculentus is an invasive troublesome neophyte in many arable crops in Belgium. Applied weed control varies from field to field. One of the possible reasons for this variability might be a differential vegetative and reproductive behaviour among Belgian C. esculentus clones. In this study, growth characteristics and herbicide sensitivity of C. esculentus clones collected in Belgian maize (Zea mays) fields were evaluated. In a morphology Experiment, 25 clones were screened for growth characteristics and ability to set viable seeds under outdoor conditions. Dose–response experiments were conducted in the glasshouse to evaluate the effectiveness of two foliar‐applied herbicides (bentazon and glyphosate) and two pre‐sowing soil‐incorporated herbicides (S‐metolachlor and dimethenamid‐P) for controlling 14 C. esculentus clones. Response variables were aboveground dry biomass, tuber number, tuber dry biomass and individual tuber dry weight. Clones exhibited large differences in shoot number (up to 3.1‐fold), tuber dry biomass (up to 4.7‐fold), tuber number (up to 3.4‐fold), individual tuber dry weight (up to 4.8‐fold), inflorescence number and capacity to set viable seeds. Large interclonal differences in herbicide sensitivity (up to 8.3‐ and 4.0‐fold for aboveground dry biomass and tuber dry biomass, respectively) were observed. Contrary to foliar‐applied herbicides, soil‐incorporated herbicides were very effective and provided season‐long C. esculentus control at doses below the recommended maximum field dose. However, low doses stimulated tuber formation. Future C. esculentus management strategies should take into account differential growth characteristics and herbicide sensitivity of C. esculentus clones.

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“…In fact, the symptoms produced with these CBI plus PSII mixtures changes from the slow bleaching or chlorotic symptoms normally associated with most CBI or PSII inhibitor applied alone to a rapid necrosis that appears on leaves within 1 to 2 days after application. The level of synergistic herbicidal response ob-served with these CBI plus PSII inhibitor mixtures is often dependent on the ratio of herbicide application rates and the inherent level of sensitivity among various weeds to both the CBI and PSII inhibitors applied alone [4,6,9]. It was originally believed that this synergistic response between CBI and PSII inhibitors was mostly attributed to carotenoid inhibitors that target p-hydroxyphenylpyruvate dioxygenase (HPPD), whereby the inhibition of this enzyme prevents the conversion of the amino acid tyrosine to homogentisate which is further converted to either the co-factor plastoquinone or the antioxidant -tocopherol.…”

Section: Introductionmentioning

confidence: 99%

Differential Photosynthetic Efficiency and Pigment Content in Two Common Purslane (Portulaca oleracea) Biotypes

Armel¹,

Kopsell²,

Vargas³

et al. 2012

TOHORTJ

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Studies were conducted to determine how a serine to threonine mutation at position 264 on the Qb binding niche of the D1 protein [urea-resistant/triazine resistant (UR/TR biotype)] in common purslane (Portulaca oleracea) impacted carotenoid and chlorophyll pigment pools and measurements of photochemical and non-photochemical quenching (NPQ) following applications of various inhibitors of carotenoid biosynthesis (CBI) and the Photosystem II (PSII) inhibitor diuron when applied alone, or in mixtures, as compared to wildtype (WT) purslane. Non-photochemical quenching decreased 138 to 531% in comparison to the untreated checks following any herbicide application. Most CBI herbicides and diuron did not change chl a and chl b in the UR/TR biotype, while these same herbicide treatments tended to sharply decrease chlorophyll pigments in the WT population. Zeaxanthin levels were sharply elevated when CBI herbicides were applied alone to both purslane biotypes. β-carotene reduced in both biotypes following herbicide applications in comparison to the untreated check. Neoxanthin, antheraxanthin, and lutein were generally increased or remained similar to the untreated controls in the herbicide treated UR/TR biotype, while levels of these carotenoids tended to decrease in the herbicide treated WT population. Diuron alone increased neoxanthin, antheraxanthin, lutein, and zeaxanthin by 4 to 200% in the UR/TR biotype, but decreased these same carotenoids 25 to 62% in the WT population. The applications of CBI and PSII herbicides demonstrate that redox signaling in response to this mutation in the D1 protein may impact the retention of plant pigment concentrations in the light harvesting complexes of PSII, which would be vital for stress tolerance in this biotype.

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Mesotrione Combinations with Atrazine and Bentazon for Yellow and Purple Nutsedge (Cyperus EsculentusandC. Rotundus) Control in Corn

Cited by 16 publications

References 28 publications

CHEMICAL OPTIONS FOR THE CONTROL OF SILVERLEAF NIGHTSHADE (Solanum elaeagnifolium)

CHEMICAL OPTIONS FOR THE CONTROL OF SILVERLEAF NIGHTSHADE (Solanum elaeagnifolium)

Differences in growth and herbicide sensitivity among Cyperus esculentus clones found in Belgian maize fields

Differential Photosynthetic Efficiency and Pigment Content in Two Common Purslane (Portulaca oleracea) Biotypes

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