COMPARATIVE MEASUREMENTS OF FAN AND PAD COOLING AND PLANT WETTING
This research was carried out in a two-compartment greenhouse especially built for this study, and planted with a rose crop (cv.Sonia). In addition to measurements of climate, simultaneous measurements were also made of soil evaporation, transpiration of a single plant with a lysimeter (C.J. v.d. Post, ITT) leaf thickness and water potential (P.A.M. Hopmans L.H.). Figures 1, 2, and 3 show the greenhouse block, the ground plan and the position of the instrumentation.