Knowing yield can help you make informed management decisions. You can estimate potential yield from past history of the field, neighboring fields of similar type, averages for specific forages, and from soils information.
Thinning is the term foresters apply to removal of some trees from a stand to give others more room (and resources) to grow. It is a tool for improving timber value, making sites more productive, and — perhaps most commonly — for keeping trees healthy. Learn when to thin and how much to cut, and learn why the answer may be "it depends."