Abstract
Ilex crenata Thunb. ‘Helleri’ plants were grown in sand culture and supplied daily with nutrient solutions of 10, 40, 70 or 100 mg l −1 nitrogen (N). Plant growth at all rates of N was characterized by an initial period of simultaneous shoot and root dry weight accumulation, followed by shoot elongation, root growth cessation, and major accumulations of N and dry weight. Plants grown at the greater N rates accumulated more N and exhibited a higher shoot-to-root ratio as a result of greater shoot than root growth. Plants grown at the higher N applications initiated extension growth before plants grown at lower N levels.
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