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Rust-Infected Quackgrass (Elytrigia repens) Growth and Rhizome Bud Death after Glyphosate Application
Published online by Cambridge University Press: 12 June 2017
Abstract
Photosynthesis decreased 32% in quackgrass infected with rust. Photoassimilate transport in rust-infected quackgrass, assessed by autoradiography, was less than that of control (no rust) leaves 35 min after exposure to 14CO2. Greenhouse-grown quackgrass height, foliar and rhizome dry weights, rhizome length, and bud numbers decreased 11, 25, 28, 19, and 21% in rust-infected plants, respectively, compared to control plants. Foliar and rhizome biomass decreased 31 and 39%, respectively, in field-grown rust-infected plants. Rhizome bud death 48 h after treatment (HAT) in both control and rust-infected plants increased as glyphosate rate increased from 0.13 to 1 kg ae ha−1; however, control plant bud death was significantly greater than that of rust-infected plants.
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- Copyright © 1993 by the Weed Science Society of America
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