Raise cutting diameters for increased returns

Diameter-limit cutting is widely used to harvest logs in eastern hardwoods. Studies show that cutting limits are often set so low that they sacrifice financial returns. The value of lumber cut from logs is largely dependent on the diameter, grade, and tree species. As tree size increases so does the proportion of higher grade lumber, and this is reflected in improved log grades. Small trees, even though they are of sawlog size, saw out little high-grade lumber. The maximum grade log that can be obtained from a 12-inch dbh tree is a 3, which produces little quality lumber. On the other hand, a 16-inch dbh tree has the potential for producing a butt log with a grade of 1. Leaving the tree to grow from 12 to 16 inches may increase the financial value of the tree by several times. This increase in tree value with increasing tree size and grade can be expressed in annual percent value increase.