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Root Interaction Between Bromus Tectorum and Poa Pratensis: A Three-Dimensional Analysis

Peter A. Bookman and Richard N. Mack
Ecology
Vol. 63, No. 3 (Jun., 1982), pp. 640-646
Published by: Wiley
DOI: 10.2307/1936783
Stable URL: http://www.jstor.org/stable/1936783
Page Count: 7
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Root Interaction Between Bromus Tectorum and Poa Pratensis: A Three-Dimensional Analysis
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Abstract

The spatial distribution of roots of two alien grasses, Bromus tectorum and Poa pratensis, grown singly and in a mixture, was examined using a double-labelling radioisotope technique. Interactions between the root systems of these plants led to a restricted B. tectorum rooting volume in P. pratensis neighborhoods @?30-d-old. The roots of B. tectorum failed to develop laterally. The altered B. tectorum root systems may contribute to its inability to persist in established P. pratensis swards.

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