Aaah yeah, that's the guy I meant.
Here's his thread here on the forums: http://forum.feed-the-beast.com/threads/tree-crossbreeding-for-biofuel-and-farms.23179/
I'm not sure that breeding in 3x3 girth is beneficial for biofuel, as it mostly adds wood. What you want is maximize the amount of leaves and the growth speed. Because of the requirement for neighbouring saplings to all mature at the same time, 3x3 trees tend to grow noticably slower than smaller trunk sizes.
Here's his thread here on the forums: http://forum.feed-the-beast.com/threads/tree-crossbreeding-for-biofuel-and-farms.23179/
I'm not sure that breeding in 3x3 girth is beneficial for biofuel, as it mostly adds wood. What you want is maximize the amount of leaves and the growth speed. Because of the requirement for neighbouring saplings to all mature at the same time, 3x3 trees tend to grow noticably slower than smaller trunk sizes.