What is the correct word (or sequences of words) for describing the following two processes?
1) The application of an agricultural product, such as a pesticide, to a plant, through the leaves. If you need an example sentence to work with, how about:
This product is for ... only.
My first trial is to fill the dots with "foliar application". Another idea that comes to mind is: "on leaves application" or "application on leaves". I don't like any of the options I came up with.
2) Same situation as above but this time the application of the product is through the roots of the plant. In order to fill the dots, I came up with "radical application" which I think is an entire different concept though, and "through roots application" which I like a bit better but I'm not sure if it is correct.
In short I'm looking for technical terms for filling the dots.
A sidenote: for "correct" I mean either the technical terms or the words generally accepted and used to express the concept I described.