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| Publication Type:
| Refereed |
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| Author(s): | Hendrickson, Paul E.;
Mallory-Smith, Carol A. |
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| Author Affiliation: | Department of Crop and Soil Science, Oregon State University Hendrickson: Faculty research assistant; and Mallory-Smith: Assistant professor, |
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| Title: | Response of downy brome (Bromus tectorum) and Kentucky bluegrass (Poa pratensis) to applications of Primisulfuron |
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| Section: | Research
Other records with the "Research" Section
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| Source: | Weed Technology. Vol. 13, No. 3, July-September 1999, p. 461-465. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America. |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Bromus tectorum; Poa pratensis; Primisulfuron; Phytotoxicity; Environmental factors; Soil targeted spraying; Foliar targeted spraying; Comparisons; Adjuvants; Dry weight; Application rates; Temperatures; Soil moisture; Biomass
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| Cultivar Names: | Abbey; Bristol |
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| Abstract/Contents: | "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 application 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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| Language: | English |
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| References: | 13 |
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| See Also: | Other items relating to: Foliar Feeding & Uptake |
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| Note: | Tables
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hendrickson, P. E., and C. A. Mallory-Smith. 1999. Response of downy brome (Bromus tectorum) and Kentucky bluegrass (Poa pratensis) to applications of Primisulfuron. Weed Technol. 13(3):p. 461-465. |
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MSU catalog number: SB 610 .W44 |
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