What is the white worm I see in mature pecans and how do I control it?
This insect is the pecan weevil. It pupates (cocoon stage) in the ground. The adult emerges and flies up to the top of the tree in late summer. You can intercept them by spraying lower limbs and the ground with Sevin starting the first week in September. (The literature talks a lot about a hickory shuck worm but that insect damages the nuts more before they are mature).
