I would only bury rocks & bricks, and burn what you can.
If you bury wood, then years later it will rot and you will have a sink-hole.
A woman a few miles from my home called me the other day, and wanted me to come and look at her front yard....It was a mess.
about 4 years ago before they built their house, they had a dozer fill in the property and he covered up large popular stumps.... and now they are rotten and the front yard has big sink holes.