Today we found the very first pecan damaged by a pecan nut casebearer larvae. If you look carefully at photo at left, you will see a small pile of insect frass near the base of the nut on the left side of the cluster. Pecan nut casebearer larvae always enter on the upper side of a nut close to the point where the nut is attached to the peduncle. When scouting for PNC damage look for the pile of frass along with some fine white webbing the insect strings between nut and peduncle.
In addition, we are still catching moths in our pheromone traps (data below). Based on today's findings we are planning to spray our pecan trees for PNC and pecan scab starting on Wednesday the 18th of June.