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1. Relectance
2. Mapping
3. Web Access

Reflectance

The reflectance properties of plant tissue change predictably in response to stress. Photosynthetic activity fluctuates with changes in water availability, temperature, sunlight and disease (to name a few). Consequently, the amount of light reflected and absorbed by the plant tissue changes as well. Typically, when a plant is under some kind of stress, reflectance in the visible region increases under stress, while reflectance in the near-infrared decreases. As the plant recovers and photosynthetic activity resumes, reflectance patterns change again. Plants begin to absorb visible light (as energy for photosynthesis) and reflect near- infrared light (bouncing off of the healthier, water filled mesophyll layer). These measurements provide a precise and unbiased measure of plant health.

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