Watermark Sensor

The Watermark sensor (granular matrix sensor) is an indirect, calibrated method of measuring soil water. It is an electrical resistance type sensor, read by data logging equipment or a Soil Moisture Meter (pictured below, centre) which converts the electrical resistance reading to a calibrated reading of Centibars (or kPa) of soil water tension. Introduced in 1979, patented in 1985, and manufactured by the Irrometer Company since 1989, this irrigation sensor has been a major break-through in soil moisture measurement technology. It has been the subject of scientific investigation by plant and soil science since the mid-1980's, and has demonstrated itself to be an affordable and practical substitute for tensiometric measurement in most agricultural and landscape irrigation environments.

The Watermark sensor is an ideal solution for both agricultural and landscape applications.It can be used very well with our iMETOS data loggers.

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Watermark Sensor|Operating range of the watermark sensor

The watermark sensor fits perfect to all crops which need a moderate water supply. If you grow apple, cherries, strawberries, tomato or potatoes this sensor will be perfect and cost effective tool to improve your irrigation. It does not fit if you are planning to do some deficit irrigation in warm climate vine production or when your want to optimise the irrigation of corn by using the optimum amount of water. In this cases we support to use a capacitive sensor.
Watermark sensors in non irrigated grape vine hourly resolution
Watermark Sensor in Cherries with Drip Irrigation During Picking(lower three sensors in drip line other three sensors under non irrigated cover crop) Daily Resolution
Watermark Sensors in Apples in the wet season 2008 in South Badenia

Created by system. Last Modification: Monday 21 of May, 2012 14:16:11 GMT by Lena.