IBIS-Flora

Angiosperm Flora of India

Preemergence Herbicides Influence Sprig Establishment of 'TifEagle' Bermudagrass

Publication Type:Journal Article
Year of Publication:2012
Authors:McCullough, PE, Schwartz, BM, Grey, T, Webster, T
Journal:Weed Technology
Volume:26
Issue:2
Date Published:2012
ISBN Number:0890037X
Keywords:Cynodon, Cynodon dactylon, Euphorbia, Kyllinga, Kyllinga brevifolia
Abstract:

The presence of weeds during bermudagrass putting green establishment can reduce growth and turf quality. Three field experiments were conducted in Georgia to investigate efficacy of dimethenamid, S-metolachlor, and oxadiazon on the establishment of 'TifEagle' bermudagrass from sprigs. Dimethenamid at 0.85 and 1.7 kg ai ha -1 , S-metolachlor at 1.1 and 2.2 kg ai ha -1 , and oxadiazon at 1.1, 2.2, and 4.4 kg ai ha -1 did not reduce bermudagrass cover from the untreated after 8 wk. S-metolachlor at 4.4 kg ha -1 was the only treatment that reduced sprig cover from the untreated after 12 wk. All S-metolachlor and oxadiazon treatments provided excellent (≥ 90%) green kyllinga control by 8 wk after treatment (WAT) while dimethenamid at 0.85, 1.7, and 3.4 kg ha -1 provided 78, 85, and 92% control, respectively. Dimethenamid treatments provided poor control (< 70%) of spotted spurge but fair control (70 to 79%) was achieved from S-metolachlor at 4.4 kg ha -1 and oxadiazon at 2.2 and 4.4 kg ha -1 by 8 WAT. Overall, low to middle rates of the herbicides tested appear to temporarily inhibit TifEagle bermudagrass sprig establishment but high rates of dimethenamid and S-metolachlor may reduce cover from the untreated. La presencia de malezas durante el establecimiento del zacate bermuda (Cynodon dactylon × C. transvaalensis Burtt-Davy) en los hoyos de golf puede reducir el crecimiento y la calidad del césped. Se realizaron tres experimentos de campo en Georgia para investigar la eficacia de dimethenamid, S-metolachlor y oxadiazon en el establecimiento del zacate bermuda 'TifEagle' a partir de la siembra de estolones. Dimethenamid a 0.85 y 1.7 kg ia ha -1 , S-metolachlor a 1.1 y 2.2 kg ia. ha -1 y oxadiazon a 1.1, 2.2 y 4.4 kg ia ha -1 no redujeron la cobertura del zacate en comparación con el testigo no tratado después de 8 semanas. S-metolachlor a 4.4 kg ha -1 fue el único tratamiento que redujo la cobertura de estolones en comparación con el testigo no tratado despues de 12 semanas. Todos los tratamientos de S-metolachlor y oxadiazon proporcionaron excelente control (≥90%) de Kyllinga brevifolia a las 8 semanas después del tratamiento, mientras que dimethenamid a 0.85, 1.7, y 3.4 kg ha -1 proporcionó 78, 85 y 92% de control, respectivamente. Los tratamientos de dimethenamid resultaron en un control deficiente (<70%) de Euphorbia maculata, pero un control regular (de 70 a 79%) se logró con S-metolachlor a 4.4 kg ha -1 y oxadiazon a 2.2 y 4.4 kg ha -1 a las 8 semanas después del tratamiento. En general, las dosis bajas o medias de los herbicidas probados parecen inhibir temporalmente el establecimiento del zacate bermuda TifEagle, pero las dosis altas de dimethenamid y S-metolachlor pueden reducir la cobertura en comparación con el testigo no tratado.

URL:http://www.jstor.org/stable/23264302
Short Title:Weed Technology
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