Me too but I can’t remember the number or where I read it. If only there was some sort of resource where we could just type in a question and Univac would supply an answer. :>}
I worked for a pulp plant owned by P&G in the early 80s. They had over a million acres of leased property on which they grew plantation pine for pulp harvesting. Their replenishment program was far superior to Mother Nature, and it was based on a 20 year cycle from seedling to harvest.