This may have been posted here before. I did not do a search but just thought I would post it for people to see. Near the bottom of this page on the right there is a video showing the product and how it is used.

Do you think it might be useful when growing in pots or starting out your fig orchard outdoors? Looks easy enough to build some yourself.

 http://www.sayegrow.com/?gclid=CJyAzZbJ7qMCFV195QodTCgn2A

Hi Lou darn why did i not come up with that idea and patent it !!!
At the 27 second mark the tree root feeder with yellow top is one i have and use in mid summer when i have to water to much and or if tree is rootbound especially good for that as i the aluminum tube is long eneough to fit in my 30 gallon bucket to bottom and has 4 holes , i attach my hose and can blast thru the roots and compact soil massaging the tube slowing up and down in soil pull tube up and go to next spot  even into the middle of the rootball.
There bucket feeder seems like it would work to soak the ground over a period of time coarse the harder the soil the longer to penetrate.
Thanks for posting the video.