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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Veröffentlicht in: | Weed technology 2012-10, Vol.26 (4), p.708-713 |
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Sprache: | eng |
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Zusammenfassung: | 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 |
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ISSN: | 0890-037X 1550-2740 |
DOI: | 10.1614/WT-D-11-00172.1 |