A promising new sensor tool to measure grapevine water status to efficiently manage vineyard irrigation is being beta tested this year in California vineyards, and if trials are successful, a commercial sensor product will be introduced to the grower market in 2020. The sensor is a micro-tensiometer that is installed into the trunk of a grapevine to provide continuous measurement of stem water potential (SWP) with data automatically transmitted to the grower to evaluate for making irrigation decisions.
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