Davis Leaf Wetness Sensor

The Davis Leaf Wetness Sensor (Model 6420) is a specialized environmental monitoring instrument designed for agricultural, horticultural, and turf management professionals who need accurate detection of moisture on plant surfaces. This sensor addresses a critical need in disease management and irrigation optimization by providing real-time data on leaf surface wetness conditions, which directly influence fungal and bacterial disease development, pesticide efficacy, and water management decisions.

Operating through capacitive sensing technology, the Davis Leaf Wetness Sensor detects moisture accumulation on its sensing surface with precision and reliability. The instrument's design mimics natural leaf characteristics, allowing it to respond to dew, fog, rain, and irrigation spray in the same manner as actual plant foliage. This makes it an invaluable diagnostic tool for integrated pest management (IPM) programs, enabling users to time fungicide applications during optimal window conditions and reduce unnecessary chemical inputs while improving disease control efficacy.

The Davis Leaf Wetness Sensor integrates seamlessly into Davis weather station networks and data logging systems, making it ideal for vineyards, orchards, golf courses, nurseries, and commercial crop operations where precise environmental monitoring drives management decisions. Its compact footprint (4 × 3 × 6 inches) and lightweight construction allow for flexible mounting on existing weather station hardware or independent setups.