ISHS Acta Horticulturae 519: XXV International Horticultural Congress, Part 9: Computers and Automation, Electronic Information in Horticulture
TEMPERATURE INTEGRATION ON A 24-HOUR BASE: A MORE EFFICIENT CLIMATE CONTROL STRATEGY |
| Authors: | A.A. Rijsdijk, J.V.M. Vogelezang |
| Keywords: | climate control, development, energy efficiency, greenhouse roses, growth, pot plants, quality, sweet pepper, temperature integration, temperature |
| Abstract:
In the past results of experiments with vegetable and ornamental crops pointed out that growth and development depend on an average temperature level. In order to investigate the possibilities of applying a temperature integration control under practical conditions an experiment was carried out with pot plants, rose, and sweet pepper. In experiments at the PBG and in commercial practice, an integration control on 24-h basis with band widths of up to 8°C was compared with a traditional control, and a survey was made of the effects on energy saving, plant growth and development. On a year-round basis energy saving of 8% was achieved at a band width of 4°C, while at a band width of 8°C the savings was 18%. Band widths of 4°C and less did not show any effects of the integration control on yield and quality. These results gave growers more confidence to give up strict regulations, and they also offer prospects for the application of an energy efficient climate control on the basis of physiological and physical processes. | |
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