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Water Uptake and Water Diffusivity of Seeds ¹

^a The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06504

When pea (Pisum sativum) seeds were wetted, a sharp front separated the wet and dry portions, the seeds swelled, and the water content in the wetted portion continued to increase for a long time. A model was proposed and tested that takes into account these three characteristics and in particular does not postulate a constant diffusivity. The parameters of the model are simply the rate of penetration of the wetting front and a swelling factor.

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