Comparison of Herbicides for Control of Diclofop-Resistant Italian Ryegrass in Wheat
AbstractDiclofop-resistant Italian ryegrass (Lolium perenne L. ssp. Multiflorum (Lam.) Husnot) is a dominant weed problem in non-irrigated winter wheat (Triticum aestivum L.) in mid-south USA. Field studies were conducted from 2001 to 2007 to evaluate the efficacy of herbicides for diclofop-resistant ryegrass control and effect on wheat yield. In 2001 through 2004, chlorsulfuron/metsulfuron at 0.026 kg ha−1 preemergence (PRE) followed by (fb) mesosulfuron at 0.048 kg ha−1 at 4-leaf to 2-tiller ryegrass provided 89% control of diclofop-resistant Italian ryegrass, resulting in the highest wheat yield (3201 kg ha−1). Flufenacet/metribuzin at 0.476 kg ha−1 applied at 1- to 2-leaf wheat had equivalent Italian ryegrass control (87%), but lesser yield (3013 kg ha−1). In 2005–2006, best treatments for Italian ryegrass control were chlorsulfuron/metsulfuron, 0.013 kg ha−1 PRE fb mesosulfuron 0.015 kg ha−1 at 3- to 4-leaf ryegrass (92%); metribuzin, 0.280 kg ha−1 at 2- to 3- leaf wheat fb metribuzin at 2- to 3-tiller ryegrass (94%); chlorsulfuron/metsulfuron (0.026 kg ha−1) (89%); and flufenacet/metribuzin at 1- to 2-leaf wheat (89%). Chlorsulfuron/metsulfuron fb mesosulfuron provided higher yield (3515 kg ha−1) than all other treatments, except metribuzin fb metribuzin. View Full-Text
Share & Cite This Article
Bararpour, T.; Hale, R.R.; Kaur, G.; Bond, J.A.; Burgos, N.R.; Tseng, T.-M.P.; Wilkerson, T.H.; Lazaro, L.M. Comparison of Herbicides for Control of Diclofop-Resistant Italian Ryegrass in Wheat. Agriculture 2018, 8, 135.
Bararpour T, Hale RR, Kaur G, Bond JA, Burgos NR, Tseng T-MP, Wilkerson TH, Lazaro LM. Comparison of Herbicides for Control of Diclofop-Resistant Italian Ryegrass in Wheat. Agriculture. 2018; 8(9):135.Chicago/Turabian Style
Bararpour, Taghi; Hale, Ralph R.; Kaur, Gurpreet; Bond, Jason A.; Burgos, Nilda R.; Tseng, Te-Ming P.; Wilkerson, Tessie H.; Lazaro, Lauren M. 2018. "Comparison of Herbicides for Control of Diclofop-Resistant Italian Ryegrass in Wheat." Agriculture 8, no. 9: 135.