We had this huge pecan tree that stood alone. The landlord said it used to put out paper shell pecans that could be cracked with one hand a decade ago. I also heard that smaller pecan trees put more nuts out and I wander why? All the nuts this large tree did put out were dry and shriveled on the inside. So one year I left water hose that leaked at the base of that tree all year and the nuts tripled and were full.
Do some trees requirement for water in the soil increase as they get larger to the point where the tree would thrive as a smaller tree but be stunted after a certain size?