We report on the development of two optical fiber sensors for agricultural applications. Specifically, a Fabry Perot optical fiber sensor with a hydroscopic photo- resin cavity is developed for monitoring oak barrel stave moisture evolution towards the development of a sensor for assessment of oak barrels used in wine aging. Furthermore, an optical fiber long period grating of extended length (~9 cm) is used as line sensor for tracing sprayed copper chlorophyllin water droplet distribution aiming to detect spraying drift during drone chemical pesticide operations.
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