Teitel, M., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O.B. 6, Bet Dagan, 50250, Israel
Barak, M., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O.B. 6, Bet Dagan, 50250, Israel
Tanny, J., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, P.O.B. 6, Bet Dagan, 50250, Israel
Cohen, S., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, P.O.B. 6, Bet Dagan, 50250, Israel
Zhao, Y., Faculty of Mechanical and Electrical Engineering, Jiaxing University, 56 Yuexiu Road, Jiaxing 314001, Zhejiang, China

In warm climates, heat is removed from greenhouses either by ventilation only (VO), usually natural ventilation (NV) or by evaporative cooling which is more expensive. Microclimate and crop responses were investigated over several summer periods in rose, pepper and tomato crops grown, in most of the experiments, simultaneously in adjacent greenhouses with VO and evaporative cooling. Evaporative cooling was implemented with a Fan and Pad (FP) system while VO with fans in the pepper experiments and NV for the tomato and rose crops. In each treatment micrometeorological and plant parameters were monitored continuously over several days. For FP, greenhouse air temperature was always lower than with VO, as expected. Foliage was usually warmer than the greenhouse air with FP and cooler than greenhouse air with VO.