>>2230259Depends a lot upon the tree and the size of the container. I don't know of any tree that I'd recommend stay in a pot for very long. You can prune back tree limbs, but that's not really an option for the roots. The bigger the container the better. Only a small amount of nutrients should be added because the nitrogen will dissolve out fairly quickly. Light and frequent irrigation + fertilizer is best. Higher organic matter the better nutrients will be retained. I generally work just with high quality compost as a starting point.
Let me put it this way, growing things as nature intended (for trees) will almost universally turn out better. Anything approaching hydroponics is going to be both inefficient and not allow for nutrient cycling.
If you want maximum growth of food in a small space there are only two super crops: potatoes (in cool season) and sweet potatoes (in warm season).
