How to Manage Pests
UC Pest Management Guidelines
Early Season Monitoring
(Reviewed 4/10, updated 4/10)
In this Guideline:
Monitor the orchard early in the season as trees come into bloom to help detect potential pest problems.
1. Sample the orchard ground cover with a sweep net for plant bug, stink bug, thrips, and katydid populations (view photos of ground cover pests).
2. Monitor trees for the presence of peach twig borers, fruittree leafrollers, or obliquebanded leafrollers, and katydids (view photos of leafrollers and katydids). Examine flowers and leaves on 2- to 3-year-old branches located at head height on each of 50 trees as you walk through each varietal block. For peach twig borers and leafrollers, pull off a few flowers and examine for feeding, holes, or the presence of caterpillars. For katydids, spend about 30 seconds examining leaves for feeding damage. Monitoring at this time will let you know the effectiveness of the dormant or bloom treatment and alert you to the need for additional treatment.
UC IPM Pest Management Guidelines:
W. J. Bentley (Crop Team Leader), UC IPM Program, Kearney Agricultural Center, Parlier