Abstract

THE relationship between nutrient absorption and the moisture content of the soil has been the object of numerous investigations. Complications arise, however, if an attempt is made to disentangle the separate processes involved. The growth of the plant itself is strongly influenced by the moisture content of the soil and the ionic equilibria between the adsorbed ions and those in solution undergo a change. Another difficulty encountered is the fluctuation in moisture content of the soil as brought about by transpiration and watering, so that the conditions are not constant during the experiment.

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