Imazethapyr plus propanil programs in imidazolinone-resistant rice

Document Type

Article

Publication Date

4-1-2011

Abstract

Field studies were conducted in 2008 and 2009 near Crowley, Louisiana, to evaluate the addition of different propanil formulations in mixture with a standard imazethapyr program of 70 g ai ha-1 early postemergence followed by (fb) 70 g ha-1 late postemergence. Weeds evaluated included red rice, barnyardgrass, Texasweed, and alligatorweed. Control of all species with treatments, including a propanil formulation applied at 3,400 g ai ha-1, was equivalent to, or greater than, the standard imazethapyr program. Rough rice yield and economic returns were maximized when the propanil formulations of Propanil 1 or Propanil 3 were mixed with imazethapyr in the early postemergence applications. The addition of propanil to imazethapyr increased rough rice yield and economic returns because of improved weed control. Nomenclature: Imazethapyr; propanil; alligatorweed, Althernanthera philoxeroides (Mart.) Griseb.; barnyardgrass, Echinochloa crus-galli (L.) Beauv; red rice, Oryza sativa L.; Texasweed, Caperonia palustris (L.) St. Hil. © Weed Science Society of America.

Publication Source (Journal or Book title)

Weed Technology

First Page

204

Last Page

211

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