Abstract

Sodium application of 0.5 meq./liter to water-cultured Amaranthus tricolor L. cv. Tricolor plants brought about a three-fold increase in dry matter production compared with those of plants deprived of sodium. This increase was due to sodium itself and not to a supplementary effect of sodium on potassium shortage nor to the accompanying anion. In sodium-sufficient plants, the total nitrogen and potassium contents were lower and calcium, chlorophyll and betacyanin contents were higher than in the deficient plants.

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