Control effect of tomato gray mold disease using a heater control unit equipped with a dew condensation sensor

Abstract

The effect of a combination of humidity control, using a heater control unit equipped with a dew condensation sensor, and fungicide spraying on the control of gray mold of tomato was examined. The relative humidity in the greenhouse decreased considerably with the use of the unit. Furthermore, the damage caused by the gray mold was reduced to 28.6% compared with fungicide spraying alone.