I would love to see how that turns out.
I realize a plant can absorb some nutrients through the leaves...
... but aren't the leaves primary objective to absorb light, and for respiration,
- while the roots are the primary source for nutritional uptake?
I'm curious, are you looking for information that may be educational to someone like you and me?
Or are you looking for a silly, but heated, debate on foliar feedings?
It's just the way it came off as I read it, sorry.
Regardless, what he says is true. Plants can be grown from Foliar feedings only, as long as the roots don't completely dry out.
It would be hard for them to dry out considering a plant tilts its leaves in an angle so that rain drops slide down the leaves and flow towards the stem of the plant, causing water that isn't on the leaves to feed their root system.
Plants sure are smart aye?
So yes it is possible, but as obvious as it would be, the yield and plant size will suffer from foliar feedings only.
The interesting part would be how the plant grows below with only folier feedings.
Lets say that plant A almost never gets fed through the roots. It's at week 4 since sprouting, and it's growing fine, but slow.
Plant B never gets foliar fed, and only watered through roots, it's also at week 4 since sprouting.
Now plant A is lets make it up, half the size of plant B, but plant A has a very small root ball, leaving it open to more and more growth overtime, which could possibly result in a larger plant than plant B.
Plant B would have a massive root ball, but wouldn't have much room to grow because the roots keep expanding, leading to it becoming root bound faster and having a growth restriction.
Now see plant A would make the PERFECT mother plant for cuttings. It would continue to grow, with a small root zone, yet will continue to produce clones.
So you see where I'm going with this, I made this up, but if it's true, I see potential for growers who are limited in pot size, space, want clones, etc.
Here is a interesting read, maybe you'll find some new information you could share later.
http://forums.gardenweb.com/forums/load/lab/msg041655342430.html?64