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Relative Tolerance of Desert Saltgrass (Distichlis stricta) and Reed Canarygrass (Phalaris arundinacea) to Boron

Published online by Cambridge University Press:  12 June 2017

Louis Y. Marquis
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Irrigated Agric. Res. and Ext. Ctr., Prosser, WA 99350
Richard D. Comes
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Irrigated Agric. Res. and Ext. Ctr., Prosser, WA 99350
Ching-Pa Yang
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Irrigated Agric. Res. and Ext. Ctr., Prosser, WA 99350

Abstract

Desert saltgrass [Distichlis stricta (Torr.) Rydb. ♯3 DISST] tolerated extremely high concentrations of boron in nutrient solution and was far more tolerant of this micro-nutrient than was reed canarygrass (Phalaris arundinacea L. ♯ TYPAR). Boron concentrations in nutrient solution necessary to reduce growth of desert saltgrass shoots and roots by approximately 50% after 28 days of exposure were 500 and 600 ppm, respectively. In contrast, shoot and root growth of reed canarygrass was decreased approximately 50% by boron concentrations of 82 and 29 ppm, respectively. After 28 days, reed canarygrass shoots contained approximately four times as much boron as desert saltgrass shoots. Reed canarygrass has a higher transpiration rate than desert saltgrass, but this difference did not appear to cause the differential boron concentrations in the shoot tissues of the two species.

Type
Weed Biology and Ecology
Copyright
Copyright © 1984 by the Weed Science Society of America 

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