Those numbers you have are for pine. The recommended spacing for an irrigated pecan orchard in Georgia is 34 trees per acre. That is a 50' row with the trees 25' in the row, but even with this spacing if you do not intend to hedge the trees you will end up thinning down to 17 trees by15 years. Then down to 9 trees per acre by age 30. This is done in order to maximize the trees canopy exposure to the sun. With pecan trees nut production is at it's best when the trees are not crowded.
Cray -- sorry about that. I somehow missed the post where you are a pecan farmer. And yes, that sure would make a difference.
Ken
