1. Development and Field Validation of a Mid-Infrared Proximal Sensing System for In-Season, On-Vine Monitoring of Grape Composition

Accurate in-season monitoring of grape composition is important for precision agriculture, as it supports timely decisions on crop management and harvest scheduling. In practice, however, commonly used approaches for assessing internal quality—such as refractometry and near-infrared (NIR) spectroscopy—are often applied to harvested samples, which limits their use for truly non-destructive measurements on developing fruit in the field. We have been developing a novel mid-infrared... H. Furukawa