The best method to determine fertility needs of pecan trees is via leaf analysis. To utilize this service, contact your local county Extension center. For topworking, young, vigorous trees less than four inches in diameter and located no closer than 30 to 35 feet apart are preferred. Larger trees can be topworked by locating the grafts higher in the tree and farther out on individual branches where limb diameters are not larger then four inches. OSU County Extension Centers have several fact sheets available to assist with topworking pecan trees.
Pecans have a strong tendency toward alternate-year bearing while in the wild, unmanaged state.
But under full management, this tendency can be minimized. This publication was originally published 7-91. This page was created 7-99.