ICTO2 Soil Oxygen Sensor

The ICTO2 soil oxygen sensor (shown above) is used to continuously monitor soil oxygen concentration; which is crucial to the productivity of economic crops such as avocado, cotton, tomato and tobacco. Anaerobic soil conditions prevent uptake of water as the roots cannot respire due to excess water in the soil profile and daily water use rapidly declines with resultant significant crop yield loss.

There are two types of O2 in soil – soil pore O2 and dissolved O2 in soil solution. Soil pore O2 directly impacts upon plant health, and dissolved O2 upon soil microbial health. A great equilibrium exists between these two ‘zones’ hence simply measuring the bulk soil O2 is enough.

The ICTO2 sensors are also used for monitoring of oxygen and water (MP406) in waste rock stockpiles to control acid mine drainage. The Teflon coated ICTO2 sensor has automatic temperature compensation via an in-built thermocouple circuit. The sensor is designed for long term in-situ measurements.

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