What is the average weight of a 25 year old pine tree in nz?

The weight of a pine is estimated by calculating the board footage of the tree. To do this it is necessary to have the length and circumference of the logs. To find the weight, one will need to multiply the diameter of the small end of the log by the length of the log. This is then multiplied by 0.37. 50.93 is added to this total. This results on the predicted weight in pounds. There are many factors, such as moisture content, that can affect these numbers.