Zoysiagrass Seedhead Suppression with Imidazolinone Herbicides

Options for suppressing zoysiagrass seedheads in managed turfgrass systems are limited. Experiments were conducted in 2010 and 2011 evaluating the use of imazamox (26, 52, and 70 g ai ha−1) or imazapic (52 g ai ha−1) for ‘Zenith' and ‘Meyer' zoysiagrass seedhead suppression. Imazamox and i...

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Bibliographic Details
Published in:Weed technology 2012-10, Vol.26 (4), p.708-713
Main Authors: Brosnan, James T, Breeden, Greg K, Elmore, Matthew T, Patton, Aaron J, Weisenberger, Dan V
Format: Article
Language:English
Subjects:
Chlorophyll
Chlorophylls
color
Corporations
Field research
Golf course
Golf courses
Grasses
Herbicides
imazamox
imazapic
Japanese lawngrass
Mowing
plant growth regulator
Plant growth regulators
seedhead suppression
Surfactants
Sustainable agriculture
turf
Turf grasses
Turfgrasses
WEED MANAGEMENT — OTHER CROPS/AREAS
weeds
Zoysia japonica
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Summary:Options for suppressing zoysiagrass seedheads in managed turfgrass systems are limited. Experiments were conducted in 2010 and 2011 evaluating the use of imazamox (26, 52, and 70 g ai ha−1) or imazapic (52 g ai ha−1) for ‘Zenith' and ‘Meyer' zoysiagrass seedhead suppression. Imazamox and imazapic at ≥ 52 g ai ha−1 suppressed Zenith zoysiagrass seedheads ≥ 95% at 2 to 6 wk after initial treatment (WAIT) each year. Slight injury ( 25%) injury was reported with these treatments at one experimental location. Although imazamox and imazapic have efficacy for zoysiagrass seedhead suppression, additional studies are needed to determine factors affecting zoysiagrass injury potential from imazamox and imazapic applications. Nomenclature: Imazamox; imazapic; zoysiagrass, Zoysia japonica Steud. ‘Zenith' and ‘Meyer'. Las opciones para suprimir las inflorescencias de Zoysia japonica en céspedes manejados son limitadas. En 2010 y 2011 se realizaron experimentos para evaluar el uso de imazamox (26, 52 y 70 g ai ha-1) o imazapic (52 g ai ha-1) para la supresión de inflorescencias de Z. japonica ‘Zenith’ y ‘Meyer’. Imazamox e imazapic a 52 g ai ha-1 suprimió las inflorescencias de Zenith ≥95% a 2-6 semanas después del tratamiento inicial (WAIT) en cada año. Un ligero daño (25%) en uno de los sitios experimentales. Aunque imazamox e imazapic muestran eficacia para la supresión de inflorescencias de Z. japonica, se necesitan estudios
ISSN:0890-037X
1550-2740
DOI:10.1614/WT-D-11-00172.1