ISHS Acta Horticulturae 456: II Modelling Plant Growth, Environmental Control and Farm Management in Protected Cultivation
DYNAMIC MEASUREMENT AND MODELLING OF CLIMATE GRADIENTS AROUND A PLANT FOR MICRO-ENVIRONMENT CONTROL |
| Authors: | M. Van Pee, K. Janssens, D. Berckmans, R. Lemeur |
| Keywords: | mathematical identification, leaf temperature |
| Abstract:
In order to obtain better bio-process control (e.g. for plants in horticulture) it is necessary to have more insight in the response of the organism to its micro-environment. In this paper it is shown that the air flow pattern and the imperfect mixing of the air create gradients in the micro-climate. Gradients of temperature influence leaf temperature and plant processes. 3-Dimensional temperature distribution around a plant was measured and a method was developed to visualise the gradients. State-space models of dynamic temperature response (air and leaf temperature) were identified using mathematical identification techniques: R2 -values of up to 99% were obtained. | |
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