Consumer hotline +8618073152920
Changsha Zoko Link Technology Co., Ltd.


Address:Room 102, District D, Houhu Industrial Park, Yuelu District, Changsha City, Hunan Province, China

Position:Home >> Blogs >> Product knowledge

Product knowledge

How does a leaf wetness sensor work

Time:2023-11-13 16:12:09 Popularity:59

leaf wetness sensor

The leaf wetness sensor is a sensor used to measure the surface moisture of plants. It is ideally suited for use in agriculture and horticulture as it helps plant managers and farmers to monitor the health of plants and determine when irrigation and foliar spraying is required.

Leaf Wetness Sensor.png

How does leaf wetness sensor works

The leaf wetness sensor can use two techniques to measure foliar moisture. The first technique uses capacitance to measure foliar moisture; this technique works on the principle that there is some individual electrical constant between the two electrodes in a capacitor, and this dielectric constant varies with the polarity and shape of the substance. When this dielectric constant changes, the capacitance value also changes. Therefore, when the sensor is in contact with the foliage of the plant, the capacitance value will vary with the humidity of the foliage.

The second technique uses impedance to measure foliar humidity, this technique works on the principle that when the sensor touches the foliage of the plant, the impedance of the circuit will change as the foliar humidity changes.


leaf wetness sensor applications

Foliar humidity sensors are commonly used in agriculture and horticulture. Here are a few application scenarios

Irrigation control:

A leaf wetness sensor can help farmers and plant managers determine when irrigation is needed. The sensors can detect the humidity on the foliage of the plant and automatically start or stop the irrigation system as needed.

Foliar Misting:

Some plants require foliar sprays to keep them healthy. For example, plants growing in dry climates need to have their foliage humidity maintained by foliar misting. Foliar moisture sensors can detect foliar moisture and automatically start or stop the spray bladder system.


Foliar moisture sensors can also be used for research. Researchers can use the sensors to measure the humidity on the foliage of plants and analyze the growth of different plants under different conditions.


There are following advantages of using leaf wetness sensor.

Saving time and labor

The use of sensors allows for automatic monitoring of plant foliage humidity, thus saving the time and labor required to manage plants. The sensors can work unattended, thus reducing costs and increasing efficiency.

Reduce Water Waste

Using sensors you can accurately measure the humidity of plant foliage and automatically start or stop the irrigation system as needed. This reduces water waste and increases the efficiency of farmers and plant managers.

Improved plant health

Using sensors improves plant health by maintaining the right level of foliar humidity. This can improve plant yield and quality, and reduce the risk of disease and pest infestation


The leaf wetness sensor is an advanced technology used to measure plant foliar moisture. It helps farmers and plant managers monitor plant health and determine when irrigation and foliar sprays are needed. Using sensors saves time and labor, reduces water waste, and improves plant health.

Related recommendations

Related products

Tell us your requirements, Let's discuss more about your project.we can do more.







XHow does a leaf wetness sensor work-Product knowledge-Automatic weather stations_Pyranometer_Agricultural sensor_Soil sensor_temperature and humidity sensor_PH sensor_NPK sensor_environmental monitoring-NiuBoL

Screenshot, WhatsApp to identify the QR code

WhatsApp number:+8615367865107

(Click on WhatsApp to copy and add friends)

Open WhatsApp

The WhatsApp ID has been copied, please open WhatsApp to add consultation details!