How to Manage Pests
UC Pest Management Guidelines
In this Guideline:
Set out pheromone
traps in vineyards to monitor the flights of omnivorous leafroller
or orange tortrix (coastal areas).
- Place traps in each vineyard for which
you need to make pest management decisions, using at least 2 traps per block.
- Distribute traps uniformly through the
vineyard. Use the same trap locations each year. Place additional traps in hot
- Hang traps in the shade inside the vines
and at least 15 vines from the end of the rows.
traps twice a week until the biofix is established; thereafter, check traps
trapped insects from the trap bottom after you count and record the trap catch
on the pheromone trap and degree-days monitoring form (example
- Replace trap bottoms monthly or when they
become covered with debris.
- Follow the manufacturer's recommendations
for replacing pheromone lures. Store lures in a refrigerator or freezer.
||Where and when to set traps
and other warm inland valley vineyards—just before budbreak
||first night moths are caught consistently in traps
||Coastal regions—late December
||when low catches are observed between late January through early February and again in early June
UC IPM Pest Management Guidelines: Grape
UC ANR Publication 3448
L. G. Varela (Crop Team Leader), UC IPM Program, Sonoma County
W. J. Bentley, UC IPM Program, Kearney Agricultural Research Center, Parlier
D. R. Haviland, UC IPM Program, Kern County
P. A. Phillips, UC IPM Program, Ventura County
R. J. Smith, UC Cooperative Extension Sonoma County
A. Shrestha, UC IPM Program, Kearney Agricultural Center, Parlier
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