Perfecte Chrysant met verrood koeler telen : Teelt 24-28 Energiezuinige demonstratieteelten Chrysant bij Delphy Improvement Centre

Samenvatting

In five chrysanthemum crops research has been conducted for growing under dimmable Full LED lighting. In winter, the lighting was controlled in such a way that the dynamics of the electricity price and the stage of development of the crop were taken into account. This turned out to be very applicable to Chrysanthemum. The night temperature has been lowered to 16°C while the crop development remained acceptable, the day temperature was kept at a minimum of 18°C. Length development can be stimulated in winter by EOD-VR, 20 μmol/(m².s) for 10 minutes. This also promotes leaf quality and stimulates generative development and suppresses sprat formation. The shelf life was insufficient in the winter. It is expected that this can be improved by more variation in humidity and removing moisture during the day. In the summer the greenhouse climate is easy to control. The combination of coarse-mesh insect net with high-pressure mist system and forced ventilation ensured that the temperature remained manageable. Cooling at night can lower the greenhouse temperature some degrees below the outside temperature. Thrips can be easily controlled with biological control agents. More research is needed to control different types of lice.