Articles
EFFECTS OF DIFFERENT LIGHTING STRATEGIES ON THE GROWTH AND DEVELOPMENT OF FICUS BENJAMINA
Article number
418_4
Pages
37 – 44
Language
Abstract
Seven different lighting strategies along with a control were tested, during winter, for Ficus benjamina plants grown in greenhouses.
In five strategies, continuous or intermittent supplementary lighting was applied during the night when the daily radiation integral was less than 3 MJ.m-2. In the other strategies supplementary lighting was applied during the natural day when the irradiance dropped below 35 W.m-2. Plant height was enhanced by increasing the lighting period.
Biomass increase and plant quality however were optimal at a lighting period of 16 h day-1. Lighting during the night favoured partioning to non-assimilatory plant components.
The different lighting strategies had no effect on the lighting efficiency on leaf area base.
In five strategies, continuous or intermittent supplementary lighting was applied during the night when the daily radiation integral was less than 3 MJ.m-2. In the other strategies supplementary lighting was applied during the natural day when the irradiance dropped below 35 W.m-2. Plant height was enhanced by increasing the lighting period.
Biomass increase and plant quality however were optimal at a lighting period of 16 h day-1. Lighting during the night favoured partioning to non-assimilatory plant components.
The different lighting strategies had no effect on the lighting efficiency on leaf area base.
Authors
E. Beel, P. De Bruyn, F. Frederick, R. Lemeur
Keywords
Lighting strategy, supplementary lighting, Ficus benjamina, growth function, light efficiency, leaf area expansion, ornamental value
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