Air pruning - seedling trays?

[Duh_Vinci]

Hello all!

After reading about tomato root development while back, and specifically related to the lateral root growth, I found one company out of NY makes some seed starting trays, called "Air-Prune® SeedlingTray" Here is a like to their site:

http://www.renaldo.org/renaldo_sales.../airprune.html

I was curious, and since the cost was very favorable, I ordered one, arrived couple of weeks ago. Originally, tray holds 200 seedlings in 1" x 1" x 1" cells. But since the tray is a little big for to fit into the standard 1020 tray, I chopped it up this morning, now having 3 separate trays:

112 cell (perfect fit into 1020 tray), 40 cell (perfect for the kitchen window)



And one 21 cell tray (good for the small batches of seasonal, unique or slow germinating varieties), now loaded with seed seeds, to test this trays in the real life...




I don't know what to expect, but wanted to try it anyway. If anyone has any thoughts behind this method/theory of "air-pruining" and/or experience with these trays, please, share your thoughts/tips?

Regards,
D