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Responses of Downy Brome and Crested Wheatgrass to Nitrogen and Phosphorus in Nutrient Solution

Published online by Cambridge University Press:  12 June 2017

Richard E. Eckert Jr.  and
Raymond A. Evans
Richard E. Eckert Jr.
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, University of Nevada, Reno, Nevada
Raymond A. Evans
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, University of Nevada, Reno, Nevada
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Abstract

In a “closed system” nutrient solution experiment, shoot growth of downy brome (Bromus tectorum L.) was: (1) more rapid during early growth, (2) accelerated earlier by nitrogen, and (3) increased more by low to intermediate levels of nitrogen than that of crested wheatgrass (Agropyron desertorum Fisch. ex Link). Shoot growth of crested wheatgrass was increased more by high levels of nitrogen and at a more mature stage of growth than that of downy brome. Root growth of crested wheatgrass was greater at all nitrogen levels than that of downy brome and was increased by the high nitrogen levels. Downy brome removed more nitrogen from solution at the intermediate nitrogen level than did crested wheatgrass and more phosphorus at both the low and intermediate nitrogen levels. At the highest nitrogen level, crested wheatgrass removed more nitrogen from solution than did downy brome.

Type
Research Article
Information
Weeds , Volume 11 , Issue 3 , July 1963 , pp. 170 - 174
Copyright
Copyright © 1963 Weed Science Society of America 

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References

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