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In the Field: Crop Thirst Sensors May Save Water

Posted by Adam Kuban, July 10, 2007 at 11:45 AM

Small sensors "the size of a fly's wing" could help farmers save on irrigation costs and reduce impact on the water supply:

Clipped permanently to a leaf during the growing season, the sensor would monitor moisture content and chemical signatures that can indicate when the plant is undergoing water stress. The chemical signs, such as an increase in salt and sugar content in the cells, occur much earlier than physical signs, such as drooping leaves, that many farmers rely on now.

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