Agriculture is in need for new sustainable solutions in order to reduce their phytosanitary products utilization. To this end, the early detection of the necessary conditions for disease development is a key to their reduction. Combined with a laser source, such a tool can do fast measurements on a field scale and, by doing so, help farmers in containing diseases. Thus, a laser-based sensor has been developed for wetting monitoring. Using the Heiligenschein phenomenon, it has been proved effective on both hydrophilic and hydrophobic surfaces in controlled conditions.
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