I wonder if these numbers are the amount sprayed on a field/orchard (I assume?) or somehow measures how much was absorbed by the trees/plants which would be les

I wonder if these numbers are the amount sprayed on a field/orchard (I assume?) or somehow measures how much was absorbed by the trees/plants which would be less. What I’m getting at, is where does the water not taken in by the plants go? Evaporates? Sinks to the aquifer? What side effect would there be if all almond orchards were no longer watered (other than to the orchard)?