Color infrared imagery is useful in learning about the health status of leafy plant material. But can it be used to selectively harvest wine grapes, separating a block into different lots for winemaking purposes? In a previous article in Good Fruit Grower, I described what color infrared imagery is and what it detects (see the August 2005 issue). The proportions of light reflected back in the visible and near infrared wavelengths (just beyond the visible light we can see) tell us something about the amount of leafy plant material. The more reflectance we measure in the near infrared bands, the […]