1972
DOI: 10.1007/bf01348519
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The supply of nutrient ions by diffusion to plant roots in soil

Abstract: The concentration of exchangeable P (to pa2 over 10 weeks) in a sandy soil was lowered by 50 per cent at the surface of a plane of onion roots. The rate of P uptake was uniform for 18 days, and the zone of depletion spread regularly. The effective difIusion coefficient increased by a factor of 2 to 3 over the period. The diffusion coefficient was approximately twice as great at a distance from the root plane as it was near the root plane, where the concentration was lower.

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Cited by 16 publications
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