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Response of Downy Brome ( Bromus tectorum ) and Kentucky Bluegrass ( Poa pratensis ) to Applications of Primisulfuron by Paul E. Hendrickson; Carol A. Mallory-Smith is a Agricultural and Biological Sciences article available to read on EtoBox.

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

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 GR~50~(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

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

Author

Paul E. Hendrickson; Carol A. Mallory-Smith

Publisher

Allen Press Online Publishing; Cambridge University Press; Cambridge University Press (CUP) (ISSN 0890-037X)

Published

1999

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)