Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 407149
Title Onderzoek bolblad chrysant: Resultaten praktijkonderzoek op bedrijven in De Lier en Hoek van Holland
Author(s) Maaswinkel, R.H.M.; Ieperen, W. van; Kersten, M.
Source Bleiswijk : Wageningen UR Glastuinbouw (Rapporten GTB 1079) - 32
Department(s) WUR GTB Teelt & Bedrijfssystemen
Horticultural Supply Chains
Publication type Research report
Publication year 2011
Keyword(s) chrysanthemum - bladeren - afwijkingen, planten - symptomen - daglicht - kunstmatige verlichting - verrood licht - aanvullend licht - schijnbaar positieve resultaten - glastuinbouw - nederland - leaves - plant disorders - symptoms - daylight - artificial lighting - far red light - supplementary light - false positive results - greenhouse horticulture - netherlands
Categories Cultivation, Cultural Methods / Cut Flowers
Abstract During the growing season 2010-2011, on two nurseries, research was done on bulbous leaf by chrysanthemum. The amount of daylight is limited during the winter. It is common that the chrysanthemum-plants are lighted by SON-T lamps. The spectrum of these lamps (550 – 620 nanometres) is not corresponding to the daylight. Especially the far-red part of the spectrum is during the winter scarcely present. It supposed that caused by the shortage of far-red light the conversion of starch does not expired optimum at night for varieties which are sensitive for bulbous leaf. The natural shortage of far-red light in the spectrum can be supplemented by lightning with bulbs. On both nurseries standard cultivation is compared with cultivation in which, after a dark period of one hour light is given with bulbs during one hour. On both nurseries there were limited problems with bulbous leaf. Only one time (with the variety Anastasia Pink Star) it was possible to prevent bulbous leaf with given light by bulbs. Further on it appears that delaying of the bud formation was occurred by lighting with bulbs during the dark period.
There are no comments yet. You can post the first one!
Post a comment
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.