We started spraying our pecan orchard this morning and this year we are using Sevin XLR insecticide. Other isecticides labeled for pecan weevil control include Warrior II, Silencer, Hero and Proaxis.
The photo shows a female pecan weevil looking for just the right spot to drill through shuck and shell to enable her to lay 5 to 7 eggs inside the pecan. To control pecan weevil, you must prevent female weevils from laying eggs.