The Microclimate and Transpiration of a Greenhouse Cucumber Crop

ABSTRACT Point source sensors and plant growth variables were used to characterize the microclimate of a greenhouse grown cucumber crop. Diurnal cycles and/or vertical profiles of solar radiation, air movement, leaf and air temperature, humidity, transpiration rate, and stomatal resistance, as well as plant architectural parameters were reported. Canopy leaf temperature with high solar radiation was found considerably lower than greenhouse air temperature due to high transpiration rate.