Potassium Fluxes during Potassium Absorption by Intact Barley Plants of Increasing Potassium Content 1

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RESUMO

The presence of previously absorbed K in plants caused a marked reduction in the short term influx of 86Rb-labeled K into roots of barley seedlings. The influx values agreed with net K absorption rates into intact plants, thus suggesting that K efflux was negligible in comparison with influx.

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