Translator Disclaimer
1 October 2007 Sulfonylurea Herbicides Applied During Early Establishment of Seeded Bermudagrass
JOHN B. WILLIS, Daniel B. Ricker, SHAWN D. ASKEW
Author Affiliations +
Abstract

Much research has evaluated herbicide safety on established bermudagrass turf, but information is lacking on seedling response to herbicides. Three field experiments were conducted in Blacksburg, VA, to assess turfgrass and smooth crabgrass response to selected sulfonylurea herbicides during seedling bermudagrass establishment. Herbicides injured bermudagrass 9 wk after treatment in the following order from most to least injurious: flazasulfuron  =  trifloxysulfuron > rimsulfuron > metsulfuron  =  sulfosulfuron > foramsulfuron. Herbicides applied 3 wk after seeding (WAS) were generally more injurious than when applied 1 WAS. Flazasulfuron and trifloxysulfuron-sodium controlled smooth crabgrass greater than 90% at 6 WAS, and metsulfuron and rimsulfuron suppressed smooth crabgrass 76 and 84%, respectively. Foramsulfuron, metsulfuron, and sulfosulfuron appear safe to apply 1 and 3 WAS, causing very little chlorosis and no reduction in turf cover. Rimsulfuron is injurious when applied at those timings; however, long-term cover is not reduced. Flazasulfuron and trifloxysulfuron-sodium are not safe to use 1 and 3 WAS unless weed pressure is extreme, and a delay in bermudagrass cover is acceptable.

Nomenclature: Flazasulfuron; foramsulfuron; metsulfuron; rimsulfuron; sulfosulfuron; trifloxysulfuron-sodium; smooth crabgrass, Digitaria ischaemum (Schreb.) Schreb ex Muhl. DIGIS; bermudagrass, Cynodon dactylon (L.) Pers. ‘Riviera’.

JOHN B. WILLIS, Daniel B. Ricker, and SHAWN D. ASKEW "Sulfonylurea Herbicides Applied During Early Establishment of Seeded Bermudagrass," Weed Technology 21(4), 1035-1038, (1 October 2007). https://doi.org/10.1614/WT-07-058.1
Received: 16 April 2007; Accepted: 1 July 2007; Published: 1 October 2007
JOURNAL ARTICLE
4 PAGES


Share
SHARE
KEYWORDS
turfgrass injury
warm-season turfgrass
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top