Summary
Experiments were conducted with young wheat seedlings to determine the effects of selected cations on Cs-uptake by roots and on transport to shoots. The experiments were conducted in dilute, slowly stirred solutions. Uptake by roots was reduced by prior K treatment and simultaneous presence of K, Rb, and NH4. Addition of Ca at pH 4 increased Cs-uptake by roots. Transport to shoots was reduced by Ca at pH 6, by NH4, and by K and Rb when the K-content of the tissue was high. when the K-content of the tissue was low, little Cs transport occurred and solution concentrations of K up to 0.01 me per liter increased Cs-transport.
The data suggest that separate processes were involved in Cs uptake and transport with competition existing between the two processes for the entering Cs. Ammonium ions inhibited both uptake and transport to about the same extent whereas K inhibited uptake more than transport.
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Contribution from Department of Soil Science, North Carolina Agricultural Experiment Station, Raleigh, North Carolina. Submitted as Paper No.1833 of the Journal Series.
Professor, Graduate Assistant and Assistant Professor, respectively. Mr. Lugo is now Instructor, College of Agriculture, University of Puerto Rico.
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Jackson, W.A., Lugo, H.M. & Craig, D. Cesium uptake from dilute solutions by young wheat seedlings as affected by selected cations. Plant Soil 24, 33–53 (1966). https://doi.org/10.1007/BF01373072
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DOI: https://doi.org/10.1007/BF01373072