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1 April 2012 Preemergence Herbicides Influence Sprig Establishment of ‘TifEagle’ Bermudagrass
Patrick E. McCullough, Brian M. Schwartz, Timothy Grey, Theodore Webster
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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.

Nomenclature: Hybrid bermudagrass, Cynodon dactylon × C. transvaalensis Burtt-Davy; green kyllinga, Kyllinga brevifolia Rottb.; spotted spurge, Euphorbia maculata L.

Weed Science Society of America
Patrick E. McCullough, Brian M. Schwartz, Timothy Grey, and Theodore Webster "Preemergence Herbicides Influence Sprig Establishment of ‘TifEagle’ Bermudagrass," Weed Technology 26(2), 300-303, (1 April 2012).
Received: 19 October 2011; Accepted: 1 December 2011; Published: 1 April 2012

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