ISHS Acta Horticulturae 570: VIII International Symposium on Flowerbulbs
EFFECTS OF BULB PLANTING DATE ON GROWTH OF TULIP 'DON QUICHOTTE' UNDER MILD WINTER CONDITIONS |
| Author: | M. Le Nard |
| Keywords: | bulbing, growth, planting date, tulip, stress |
| Abstract:
For tulip bulb production it is recommended not to plant the bulbs when soil temperature is high (> 12-13°C). This is due to the risk of Fusarium contaminations. In areas with mild Winters, generally associated with warm Autumns and warm Springs, planting dates can be as late as December. In order to determine the effects of planting date under such climatic conditions, bulbs were planted in October, November, and December. The growth of the various organs of the plants (roots, aerial parts, daughter bulbs) was recorded. Late planting resulted in: 1) a reduced root growth, 2) a very slight delay in flowering, 3) a reduction in plant height and aerial part weight, and 4) a delayed daughter bulb enlargement. | |
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