How to Manage Pests
UC Pest Management Guidelines
Distorted Leaves (Shoestringing)
(Reviewed 4/10, updated 4/10)
In this Guideline:
Plants affected by shoestringing disorder have narrow, leathery leaves. Holes appear in the middle and margins of leaves as if chewed by insects. Symptoms appear very similar to virus or 2,4-D drift. In severe cases the plants are chlorotic and can be very stunted. This disorder has been observed in fields with and without black plastic mulches, but its appearance seems to coincide with very warm temperatures at certain growth stages.
The cause of this malady is unknown and currently there are no management guidelines.
UC IPM Pest Management Guidelines:
J. J. Stapleton, UC IPM, Kearney Agricultural Center, Parlier