HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Werkhoven, C. H. E. Articles by Ohlrogge, A. J. Search for Related Content PubMed Articles by Werkhoven, C. H. E. Articles by Ohlrogge, A. J. Agricola Articles by Werkhoven, C. H. E. Articles by Ohlrogge, A. J.

Uptake of Rubidium by Plants from Cation-Exchange Resin Suspensions and Their Equilibrium Solutions¹

ABSTRACT

Two laboratory experiments were performed to evaluate absorption of Rb⁸⁶-labeled rubidium by rye and corn from suspensions of a cation-exchange resin and their equilibrium solutions as affected by a small distance, defined by high-porosity filters, separating the roots from the exchanger.

With one exception, the absorption from the suspensions was from 3% to more than 100% higher than that from the solutions, depending on the length of the absorption period, the presence or absence of a filter, and the rubidium concentration.

The data are in agreement with those of other workers, who demonstrated the existence of two-phase effects on ion absorption; the increased uptake from the suspensions is possibly due to a replenishment effect which is effective over a distance of at least 150µ from the colloids.

¹ Journal Paper No. 2018. Purdue University Agr. Exp. Sta., Lafayette, Ind. Contribution from the Dept. of Agronomy. Part of a thesis submitted by the senior author in partial fulfillment of the requirements for the Ph.D. degree.

² Research Officer, Canada Department of Agriculture, Indian Head, Sask. (formerly research assistant, Purdue University), and Professor of Agronomy, respectively.

Received for publication November 26, 1962. Accepted for publication May 15, 1963.