Suppression of Bromus tectorum L. by Established Perennial Grasses : Potential Mechanisms—Part One
Joint Authors
Source
Applied and Environmental Soil Science
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-19
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Earth Science , Water and Environment
Abstract EN
Bromus tectorum L.
(cheatgrass) is an Eurasian annual grass that has invaded ecosystems throughout the Intermountain west of the United States.
Our purpose was to examine mechanisms by which established perennial grasses suppress the growth of B.
tectorum.
Using rhizotrons, the experiment was conducted over 5 growth cycles: (1) B.
tectorum planted between perennial grasses; (2) perennials clipped and B.
tectorum planted; (3) perennials clipped and B.
tectorum planted into soil mixed with activated carbon; (4) perennials clipped, B.
tectorum planted, and top-dressed with fertilizer, and; (5) perennial grasses killed and B.
tectorum planted.
Water was not limiting in this study.
Response variables measured at the end of each growth cycle included above-ground mass and tissue nutrient concentrations.
Relative to controls (B.
tectorum without competition), established perennial grasses significantly hindered the growth of B.
tectorum.
Overall, biomass of B.
tectorum, grown between established perennials, increased considerably after fertilizer addition and dramatically upon death of the perennials.
Potential mechanisms involved in the suppression of B.
tectorum include reduced nitrogen (possibly phosphorus) availability and coopting of biological soil space by perennial roots.
Our data cannot confirm or reject allelopathic suppression.
Understanding the mechanisms involved with suppression may lead to novel control strategies against B.
tectorum.
American Psychological Association (APA)
Blank, Robert R.& Morgan, Tye. 2012. Suppression of Bromus tectorum L. by Established Perennial Grasses : Potential Mechanisms—Part One. Applied and Environmental Soil Science،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-486728
Modern Language Association (MLA)
Blank, Robert R.& Morgan, Tye. Suppression of Bromus tectorum L. by Established Perennial Grasses : Potential Mechanisms—Part One. Applied and Environmental Soil Science No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-486728
American Medical Association (AMA)
Blank, Robert R.& Morgan, Tye. Suppression of Bromus tectorum L. by Established Perennial Grasses : Potential Mechanisms—Part One. Applied and Environmental Soil Science. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-486728
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-486728