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Expansion of Feral Cereal Rye (Secale cereale L.) on Non-crop Hillsides in Northern Utah

Published online by Cambridge University Press:  20 March 2017

Kyle C. Roerig  and
Corey V. Ransom
Kyle C. Roerig*
Affiliation:
Assistant Professor, Department of Plants Soils and Climate, Utah State University, Logan, UT 84322
Corey V. Ransom
Affiliation:
currently Faculty Research Assistant, Department of Crop and Soil Science, Oregon State University, Corvallis, OR 97330 (was Former Student, Department of Plants Soils and Climate, Utah State University, Logan, UT 84322).
*
*Corresponding author’s E-mail: kyle.roerig@oregonstate.edu
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Abstract

Feral cereal rye is an aggressive, persistent winter annual grass. Although feral rye has been documented as a weed in Utah cropland for many years, it has only recently been described as a weed of natural areas in Utah. After feral rye was observed on hillside locations where it had not previously been present, research was conducted to evaluate expansion rates in isolated patches and on a landscape scale. Individual patch measurements indicated expansion rates of 17%, 42%, 44%, and 112% in 2009. The landscape expansion rates were 1%, 4%, 8%, 21%, and 50% in the same year. The spread of feral rye appears to have occurred primarily on south- to west-facing slopes where the density and diversity of native species is limited. The expansion of feral rye into natural, undisturbed areas indicates that this species should be closely monitored. The relatively short seed longevity and current small infestations make it a good candidate for early detection/rapid response efforts.

Keywords

Cereal ryeSecale cereale LSECEBluebunch wheatgrass [Pseudoroegneria spicata (Pursh) Á. Löve]non-croplandpatch expansionvolunteer ryeweed invasionweedy rye
Type
Invasion Alert
Information
Invasive Plant Science and Management , Volume 10 , Issue 1 , March 2017 , pp. 26 - 32
Copyright
© Weed Science Society of America, 2017 

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Footnotes

Associate Editor for this paper: Guillaume Fried, ANSES.

References

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