PRE and POST Control of Annual Bluegrass (<i>Poa annua</i>) with Indaziflam

Brosnan, James T.; Breeden, Gregory K.; McCullough, Patrick E.; Henry, Gerald M.

doi:10.1614/wt-d-11-00088.1

Cited by 54 publications

(55 citation statements)

References 9 publications

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“…It has pre-and early-post emergence activity on weeds. Prolonged residual activity is one of its main features; Brosnan et al (2012), for example, verified an excellent control of Poa annua, even 28 weeks after application. Myers & Parker (2011) also noted a long period of residual activity (between three and five months) for species like Eclipta alba, Euphorbia maculata and Senecio vulgaris.…”

Section: Introductionmentioning

confidence: 80%

Sensibility of plant species to herbicides aminocyclopyrachlor and indaziflam

et al. 2014

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-Aminocyclopyrachlor and indaziflam are under development in Brazil and there is no information about their behavior in Brazilian soils. This study aimed to evaluate the sensitivity of plant species to these new molecules, trying to select plants that can be used as bioindicators for testing the behavior of these herbicides in the soil. Two experiments were conducted, one for each herbicide. The treatments were arranged in a 8 x 6 factorial design, the factors being represented by eight species used as bioindicators -cotton, maize, soybean, sorghum, sunflower, millet, cucumber and beet, and six doses of herbicides (aminocyclopyrachlor -0, 10 , 20, 30 , 40 and 50 g ha ). Among the species studied, soybean and beet were quite sensitive to the two new herbicide molecules, being great alternatives for bioassays in order to detect low concentrations of aminocyclopyrachlor and indaziflam in the soil.Keywords: beet, bioassay, I 50 , soybean. -algodão, milho, soja, sorgo, girassol, milheto, pepino e beterraba e seis doses dos herbicidas (aminocyclopyrachlor -0; 10; 20; 30; 40 RESUMO -O aminocyclopyrachlor e indaziflam encontram-se em fase de desenvolvimento no Brasil e não existem informações a respeito do comportamento destes em solos brasileiros. Este trabalho teve como objetivo avaliar a sensibilidade de espécies vegetais à estas novas moléculas, buscando selecionar plantas que possam ser utilizadas como bioindicadores em ensaios de comportamento destes herbicidas no solo. Foram conduzidos dois experimentos um para cada herbicida. Os tratamentos foram dispostos em esquema fatorial 8 x 6, sendo os fatores representados por oito espécies utilizadas como bioindicadoras

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Section: Introductionmentioning

confidence: 80%

Sensibility of plant species to herbicides aminocyclopyrachlor and indaziflam

et al. 2014

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“…Indaziflam provided three to five months of residual weed control in citrus depending on weather conditions and weed pressure (Singh et al 2011b). Brosnan et al (2012) reported 89 to 100% control of smooth crabgrass (Digitaria ischaemum Schreb.) with indaziflam applied at 35, 52.5 or 70 g ha À1 .…”

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confidence: 99%

Tank Mixing Saflufenacil, Glufosinate, and Indaziflam Improved Burndown and Residual Weed Control

2013

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Saflufenacil and indaziflam, POST and PRE herbicides, respectively, have been registered recently for weed control in Florida citrus. Glufosinate is under evaluation and may be registered in the future for POST weed control in citrus. Citrus growers often want to have a tank mixture of herbicides that provide broad-spectrum weed control. Saflufenacil is a broadleaf herbicide and needs to be tank mixed with other herbicide(s) to increase weed control spectrum. Information is not available on interaction of saflufenacil, glufosinate, and indaziflam applied in tank mixtures on weed control efficacy. Greenhouse and field experiments were conducted at two locations (Polk and Orange County, FL) to evaluate the efficacy and potential antagonism or synergy of saflufenacil and glufosinate applied in tank mixes, and various three-way mixes with indaziflam. The results suggested that tank mixing saflufenacil with glufosinate had no effect on grass weed control, but had additive effect on broadleaf weed control. Indaziflam tank mixed at the recommended label rate (0.073 kg ha−1) provided better residual weed control compared with the lower rate (0.05 kg ha−1). Tank mixing indaziflam with saflufenacil and glufosinate improved broadleaf and grass weed control, reduced weed density, and biomass compared with tank mixing saflufenacil and glufosinate. Tank mixing indaziflam at 0.073 kg ha−1 with saflufenacil and glufosinate provided ≥ 88% control of broadleaf and grass weeds at 30 d after treatment (DAT), and it was comparable with tank mixing saflufenacil, glyphosate and pendimethalin. This treatment combination recorded the lowest weed density (≤ 7 plants m−2) and biomass (< 80 g m−2) at 60 DAT. Glyphosate applied alone was less effective than tank mixing with saflufenacil and glufosinate for broadleaf and grass weed control. This indicates additive effect of tank mixture on glyphosate efficacy. It is concluded that saflufenacil can be tank mixed with glufosinate for control of broadleaf and grass weeds; however, addition of indaziflam in tank mixture provided long-term, broad-spectrum weed control in Florida citrus compared with other treatments.

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“…To date, there are no instances of weed resistance to cellulose biosynthesis inhibiting herbicides. Indaziflam is a cellulose biosynthesis inhibiting herbicide with excellent efficacy for preemergence and early-postemergence annual bluegrass control in several warm-season turfgrass species (Brosnan et al 2012b). Future research should explore the use of indaziflam for managing herbicide resistant annual bluegrass alone and in rotation with other herbicides.…”

Section: Moving Forwardmentioning

confidence: 99%