Weed competition is a major factor limiting establishment of warm-season grasses. Use of preemergence herbicides in conjunction with herbicide safeners can offer a successful weed control strategy. Effects of herbicide safeners applied as seed treatments, and soil-incorporated herbicides on sand bluestem [Andropogon gerardii var. paucipilus (Nash) Fern.] and little bluestem [Schizachyrium scoparium (Michx.) Nash] were evaluated in germinator and greenhouse studies. The safeners cyometrinil ((Z)- [(cyanomethoxy)imino] benzeneacetonitrile), dichlormid (2,2-dichloro-N, N-di-2-propenylacetamide), and R-29148 (2,2-dimethyl-6-methyldichloro-acetyloxazolidine) reduced germination and shoot growth of both grasses. Sand bluestem was protected against EPTC (S-ethyl dipropyl carbamothioate) and vernolate (S-propyl dipropylcarbamothioate) by R-29148, while cyometrinil reduced EPTC damage on little bluestem. Sand bluestem treated with R-29148 tolerated 6 ppm (w/w) of vernolate or EPTC without damage. Without safener treatment sand bluestem was tolerant to metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)-acetamide] (1.25 ppm), vernolate (2 ppm), and cycloate (S-ethyl cyclohexylethylcarbamothioate) (2 ppm w/w). This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020
Scholarly peer-reviewed articles published by the Society for Range Management. Access articles on a rolling-window basis from vol. 1, 1948 up to 5 years from the current year. Formerly Journal of Range Management (JRM). More recent content is available by subscription from SRM.