I have a big pot "BIG" pot and I want to put it in ground with holes for it to continue to thrive.  I want it to stay permanently in this place.  Will this work?  Put big holes at bottom all around, then put in it the ground.

If you just put holes on the bottom sides and none on the sides, it will be easier to remove in the future.

I had one of these pots and when tried to remove it had to follow the roots for about three feet away from pot. They were shallow but the tree was thriving until I repotted the roots. It initially went into shock and then came back. IMO if the tree is able to spread its roots beyond the pot then it should initially work and give you a better quality fruit.
I have trees that I put directly into ground, so if you have this option I would do it this way, by amending and raising the soil about 6 " around the planting spot. No matter what you do the tree needs time to adjust to the surrounding soil, so having it directly in ground would be my preference. If you intend to move the tree in the future, keeping it in pot does not guarantee its survival. Should the tree become totally dependant on the ground roots (I'm speculating here) , cutting those main roots might kill the tree.

[QUOTE=sonnya]I have a big pot "BIG" pot and I want to put it in ground with holes for it to continue to thrive.  I want it to stay permanently in this place.  Will this work?  Put big holes at bottom all around, then put in it the ground.[/QUOTE]

Do what you are suggesting, but dig the hole much larger in diameter and fill it in with mulch around the pot. This will enable the roots to spread quickly, and you can move it easier if  you later decide to.