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Response of Downy Brome (Bromus tectorum) and Kentucky Bluegrass (Poa pratensis) to Applications of Primisulfuron

  • Paul E. Hendrickson (a1) and Carol A. Mallory-Smith (a1)

Abstract

Greenhouse and growth chamber experiments were conducted to evaluate primisulfuron phytotoxicity to downy brome (Bromus tectorum) and Kentucky bluegrass (Poa pratensis) as a function of herbicide placement, adjuvants, and environmental conditions. Primisulfuron rates needed to produce GR50 (50% growth reduction) values were 0.97 ± 0.57 and 8.07 ± 1.85 g/ha for downy brome and Kentucky bluegrass, respectively. Primisulfuron was applied to downy brome and Kentucky bluegrass at three placement sites: foliar, soil, and foliar plus soil. Foliar or foliar plus soil applications were more effective at reducing downy brome dry weights than the soil application of primisulfuron, whereas Kentucky bluegrass was injured more from the soil or foliar plus soil applications than from the foliar application of primisulfuron. Primisulfuron at 5 g/ha applied alone reduced downy brome dry weights by 5%, whereas when an adjuvant was added, dry weights were reduced by 52 to 83%. Primisulfuron was more phytotoxic to downy brome at alternating temperatures of 8 to 16 C and 16 to 24 C than at 0 to 8 C. Phytotoxicity of primisulfuron was less when downy brome plants were stressed for soil moisture after herbicide treatments than when the plants were not stressed or only stressed before treatment.

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Corresponding author

Corresponding author's E-mail: paul.hendrickson@orst.edu.

References

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Anonymous. 1989. Beacon herbicide technical release. Greensboro, NC: Ciba-Geigy Corp., Agricultural Division. 8 p.
Ball, D. A. and Walenta, D. L. 1996. Preliminary Evaluation of Primisulfuron for Downy Brome Control in Eastern Oregon Grass Seed Production. Corvallis, OK: Seed Production Research at Oregon State University Ext/CrS 106. 83 p.
Hart, S. E., Kells, J. J., and Penner, D. 1992. Influence of adjuvants on the efficacy, adsorption, and spray retention of primisulfuron. Weed Technol. 6:592598.
Morrow, L. A. and Stahlman, P. W. 1984. The history and distribution of downy brome (Bromus tectorum) in North America. Weed Sci. 32(Suppl. 1): 26.
Morton, C. A. and Harvey, R. G. 1994. Simulated environments influence primisulfuron efficacy, Weed Sci. 42:424429.
Mueller-Warrant, G. W., Rosato, S. C., Culver, S. D., Coats, D. D., Crowe, F. J., Chastain, T. G., Young, W. C. III, Quebbeman, B. M., Kiemnec, G. L., and Cook, G. H. 1996. Residue management and herbicides in Kentucky bluegrass seed production. Corvallis, OR: Seed Production Research at Oregon Stale University Ext/CrS 106. 83 p.
Nalewaja, J. D. and Woznica, Z. 1985. Environment and chlorsulfuron phytotoxicity. Weed Sci. 33:395399.
Nalewaja, J. D., Woznica, Z., and Manthey, F. A. 1991. DPX-V9360 efficacy with adjuvants and environment. Weed Technol. 5:9296.
Peeper, T. 1984. Chemical and biological control of downy brome (Bromus tectorum) in wheat and alfalfa in North America. Weed Sci. 32(Suppl. 1): 1825.
Seefeldt, S. S., Jenson, J. E., and Fuerst, E. P. 1995. Log-logistic analysis of herbicide dose–response relationships. Weed Technol. 9:218227.
Upadhyaya, M. K., Turkington, R., and McIlvride, D. 1986. Biology of Canadian weeds. 75. (Bromus tectorum L.). Can. J. Plant Sci. 66:689709.
Walenta, D. L. and Ball, D. A. 1997. Downy Brome Control and Seedling Kentucky Bluegrass Tolerance to Primisulfuron Application. Newark, CA: Western Society of Weed Science Progress Rep. 141 p.
Wanamarta, G. and Penner, D. 1989. Foliar penetration of herbicides. Rev. Weed Sci. 4:215231.

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Response of Downy Brome (Bromus tectorum) and Kentucky Bluegrass (Poa pratensis) to Applications of Primisulfuron

  • Paul E. Hendrickson (a1) and Carol A. Mallory-Smith (a1)

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