Q: Last year I had holes in my pecans. What is that?

A: The pecan weevil is responsible for those holes.


Q: Last year I had holes in my pecans. What is that?
A: The pecan weevil is responsible for those holes. Weevils emerge starting in early August through October. They normally emerge after a dry weather period followed by a good rain, 3/4 to 1 inch, which often happens in August. The adult weevils will emerge, walk or fly up into the tree and within a few days will start inserting the egg into the pecan nut. The main issue is identifying when the emergence occurs. Spraying the tree or the ground is not effective control, so a trapping system is used. When X number of weevils have been trapped, then spraying should occur. I have a fact sheet, No. 7190, that tells you how to build and monitor the trap. Sevin 80 percent is the most commonly used insecticide, but again proper timing is crucial.
For more information, go by the OSU Extension Center, corner of MacArthur and Acme Road in Shawnee, or call 273-7683.