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Plant Physiology 47:709-712 (1971)
© 1971 American Society of Plant Biologists

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Articles

Interaction of Rubidium or Sodium with Potassium in Absorption by Intact Sugar Beet Plants

Adel M. El-Sheikh1, T. C. Broyer and Albert Ulrich

a Department of Soils and Plant Nutrition, University of California, Berkeley, California 94720

This study concerns the selective absorption of K and Rb or of K and Na by intact sugar beet (Beta vulgaris) plants from modified conventional nutrient solutions over an extended period of plant growth. Long term results agreed with those of short term experiments by other investigators using excised root systems and simple salt solutions. Potassium and Rb were mutually competitive in their absorption. High selectivity of K relative to Na absorption was observed. Sodium was excluded during the early growth period of sugar beets.

1 Present address: Ministry of Agriculture, Plant Analysis Section, Division of Plant Nutrition, Orman, Giza, Cairo, Egypt, United Arab Republic.






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ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1971 by the American Society of Plant Biologists