UC IPM Online UC ANR home page UC IPM home page

UC IPM Home

Search

SKIP navigation
How to Manage Pests

Home & garden
Agriculture
Natural environments
Exotic & invasive

Weather data & products
Degree-days
Interactive tools & models

Educational Resources

Publications & more
Workshops and events
PCA exam helper
Pesticide information

Research and IPM

Grants programs
Funded-project results

 
  Printer-friendly version

How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About guidelines |

Cricket nymph.

Lettuce

Field Cricket

Scientific Name: Gryllus spp.

(Reviewed 8/07, updated 8/07)

In this Guideline:

DESCRIPTION OF THE PEST

Field cricket adults are shiny black or brown, 0.6 to 1.0 inch long, with long antennae. They often move into lettuce fields from cotton or infested uncultivated areas.

DAMAGE

Crickets are occasional pests, usually confined to sprinkler irrigated fields in the low desert. They can quickly destroy most of a field by eating seedlings; a number of plants in a row will be damaged.

MANAGEMENT

Apply a treatment when crickets threaten to migrate in.

Common name Amount/Acre** R.E.I.+ P.H.I.+
(trade name)   (hours) (days)
When choosing a pesticide, consider information relating to the impact on natural enemies and honey bees and environmental impact.
 
A. CARBARYL
  (Sevin) Bait 5% 40 lb 12 See label
  MODE OF ACTION GROUP NUMBER1: 1A
 
B. CYPERMETHRIN*
  (Ammo) Label rates 12 5
  MODE OF ACTION GROUP NUMBER1: 3
  COMMENTS: For use on head lettuce only. Apply through chemigation.
 
C. PERMETHRIN*
  (Ambush, Pounce) Label rates 12 1
  MODE OF ACTION GROUP NUMBER1: 3
  COMMENTS: Do not use if leafminers are present.
 
D. ESFENVALERATE*
  (Asana XL) Label rates 12 7
  MODE OF ACTION GROUP NUMBER1: 3
  COMMENTS: For use on head lettuce only. Do not use if leafminers are present.
 
 
**  Mix with enough water to provide complete coverage.
+ Restricted entry interval (R.E.I.) is the number of hours (unless otherwise noted) from treatment until the treated area can be safely entered without protective clothing. Preharvest interval (P.H.I.) is the number of days from treatment to harvest. In some cases the REI exceeds the PHI. The longer of two intervals is the minimum time that must elapse before harvest.
* Permit required from county agricultural commissioner for purchase or use.
1 Rotate chemicals with a different mode-of-action Group number, and do not use products with the same mode-of-action Group number more than twice per season to help prevent the development of resistance. For example, the organophosphates have a Group number of 1B; chemicals with a 1B Group number should be alternated with chemicals that have a Group number other than 1B. Mode of action is assigned by IRAC (Insecticide Resistance Action Committee). For additional information, see their Web site at http://www.irac-online.org/.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Lettuce
UC ANR Publication 3450
Insects and Other Arthropods
E. T. Natwick, UC Cooperative Extension, Imperial Co.
W. E. Chaney, UC Cooperative Extension, Monterey Co.
Acknowledgment for contributions to the insects and mites section:
N. C. Toscano, Entomology, UC Riverside

Top of page

Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2007 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /PMG/r441300511.html revised: August 1, 2007. Contact webmaster.