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Susceptibility of Annual Bluegrass and Turfgrasses to Bensulide and Three Uracil Herbicides

  • T. J. Neidlinger (a1), W. R. Furtick (a2) and N. R. Goetze (a2)

Abstract

Golf putting greens were sprayed with N-(2-mercaptoethyl) benzenesulfonamide S-(O,O-diisopropyl phosphorodithioate) (bensulide). Creeping bentgrass (Agrostis palustris Huds.) and annual bluegrass (Poa annua L.) were observed for injury. Preemergence and postemergence treatments of 5-bromo-3-sec-butyl-6-methyluracil (bromacil), 5-chloro-3-tert-butyl-6-methyluracil (terbacil), and 5-bromo-3-tert-butyl-6-methyluracil (hereinafter referred to as DP 733) were applied to a prepared seedbed planted with Kentucky bluegrasses (Poa pratensis L., var. Merion and var. Newport) and annual bluegrass.

Thirty lb/A of bensulide produced leaf discoloration and root length reduction of established annual bluegrass plants without injuring creeping bentgrass. Terbacil at 0.2 lb/A and bromacil at 0.4 lb/A gave highly selective control of annual bluegrass in Merion and Newport Kentucky bluegrasses when applied preemergence to the three grasses. Postemergence applications of these compounds produced moderate selective control of annual bluegrass.

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References

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1. Chappel, W. E. and Schmidt, R. E. 1961. Pre and postemergence crabgrass and Poa annua control studies in turf. Proc. SWC 14:9197.
2. Daniel, W. H. 1955. Poa annua control with arsenic materials. Golf Course Reporter 23 (1): 58.
3. Goetze, Norman R. 1958. Poa annua control in turf. Proc. NCWCC 15:36. (Abstr.)
4. Goss, Roy L. 1964. Preemergence control of annual bluegrass (Poa annua L.). Agron. J. 56:479481.

Susceptibility of Annual Bluegrass and Turfgrasses to Bensulide and Three Uracil Herbicides

  • T. J. Neidlinger (a1), W. R. Furtick (a2) and N. R. Goetze (a2)

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