I experiment hydroponics fig tree, the root is constantly stay in water and algae grow with the root. So too much water won't kill the tree, lack of oxygen does. The root is taller than me.  

Good point about lack of oxygen causing death.
Water-logged soil in pots restricts oxygen availability helping root rot and more so after winter storage when pots are well watered in cool spring and plant have no leaves yet or slow in leafing.

Jimmy,
Thanks for sharing your results. What fertilizer solution are you using?  What is your fertilization schedule?

I also started a hydroponic test last month, the results have been good so far, but there's still a lot to learn. Attached are pictures of one of the 10 plants in the test. Its in a 10" Net Pot / 5 gallon Bucket Cover. The fertilizer is 1 teaspoon General Purpose Miracle-Gro with 1/4 Teaspoon Epsom Salt per 1 Gallon of water. The mix is Coco Coir and Clay pellets with 1/4 cup of Espoma Gypsum (for Calcium).
  

The roots have just reached the nutrient reservoir and top growth should start to increase at this point.

No fertilizer.  I feed the koi with banana skin. Then I use water from fish tank.

Thanks for the reply.
Your experiment seems to be successful!

I'll make sure to NEVER do that, ;)

Amazing results Jimmy and Pete. Nice lab you got there. Definitely food for thought

Jimmy/Pete:

Interesting concept.  Would these trees be grown hydroponically even when they reach bearing age?  I imagine that this method could give rapid growth to rooted cuttings and then when the trees reach bearing age, continuing to grow them by conventional methods so that figs won't get waterlogged and split.  So quick, initial growth, hydroponically....and then convention growing methods when figs trees start bearing? 

Thanks for sharing.


Frank

Is there a "Dummy's Guide to Hydroponics"?  I have to try this.  It would certainly take care of the fungus gnat problem.

C.J.

C.J.,
There is lots of info on cloning hydroponically on the web.
My tests are not actually true hydroponics like Jimmy's, but a combination of Hydroponics and Fertigation, http://figs4funforum.websitetoolbox.com/post?id=6409703 for growing producing fig trees.

Using Mini-SIPs for growing cuttings has reduced or eliminated my fungus gnat problems. As long as you use "clean" potting mix and they are watered properly (from the reservoir) the top of the planter remains dry and infestation is eliminated. When used in conjunction with fertigation the result should be increased growth rates.

Way to go Jimmy!   I like that!  Keep up the good work!

My purpose of doing this is simply lazy, no time to water the tree everyday. So I put the cups inside plastic bin. Then pour 2" water into the plastic bin. I don't have to water for a month.
The concept is just like SIP, except the plastic bin is much bigger, so the water has enough surface to exchange oxygen and no need to replenish for a month. One trick is to drill more holes, and keep the cup away from the bottom, so water can flow freely.
I put mosquito dunk in the fish tank long time ago, and use the water to water figs. Since then, I no longer have gnat problem.
I keep this system indoor, so not much space for it grow, and I don't give it much light. So the tree didn't grow fast. I believe if I move the tree to the koi pond outdoor. It may grow very fast. I'll give it a try.

Thanks for the information, Jimmy.  Do you have a pic of the set up?  It seems very interesting.  I like the pond water idea as well.

see my previous post http://figs4funforum.websitetoolbox.com/post/compact-version-of-self-watering-container-6402949?pid=1278525904#post1278525904

This morning, I decide to through a small plant into a koi pond. I'll keep update how fast this plant grow on a weekly basis.
There is a picture of green onion. We harvest it on a daily basis. 

Jimmy,
Thanks for posting the additional info and pictures.
My configuration is similar, the roots are also growing down into the nutrient solution in the 5 gallon bucket reservoir.

Good Luck with the new cutting. I'll be watching for the updates. 

Those roots are spectacular, Jimmy! Amazing job. 

PS> Thanks for the Sal's Gene earlier this season: super healthy & really starting to take off.