Assuming you could cost effectively do a spectral analysis it is still not optimal. By the time the plants are showing stress it is past the optimal time to water.
The true place for these chips is university and cooperative extension research. By knowing more about how plants use water they might be able to come up with a more easily measurable metric that farmers can use.
The true place for these chips is university and cooperative extension research. By knowing more about how plants use water they might be able to come up with a more easily measurable metric that farmers can use.