, Volume 44, Issue 1, pp 267-271

Uptake of Zn65 from dry soil by plants

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Summary

Absorption of Zn65 by plant roots from a layer of dry top soil (suction > 15 bar) was measured using a technique that obviated water stress in the plant.

Roots growing through the dry layer absorbed significant amounts of Zn65 provided they absorbed water from lower depths. Mucilage accumulated around the roots in the dry soil and may have facilitated ion transfer in the immediate vicinity of the root. The ability of roots to grow in dry soil and to absorb Zn65 varied between plant species.