ISHS Acta Horticulturae 47: II International Symposium on Flower Bulbs
NITROGEN FERTILIZATION IN TULIP BULB PRODUCTION IN JAPAN |
| Author: | K. Tsutsui |
| Abstract:
Sand culture experiments were set up to investigate the nitrogen (N) requirements of tulips. To secure maximum yield it was found necessary to supply N from sprouting until flowering in quantities which would keep the N content of daughter bulbs at about 1.6% (dry matter basis) from flowering until harvest. The most suitable method of N fertilization able to satisfy these requirements was then found from experiments carried out on the loam soil of drained paddy fields. A top dressing of about 40 kg/ha N, applied in mid-December, was recommended. | |
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