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How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About guidelines |

Boxelder bug adult and eggs.

Kiwifruit

Boxelder Bug

Scientific Name: Boisea trivittatus

(Reviewed 3/07, updated 3/07)

In this Guideline:

DESCRIPTION OF THE PEST

Adults have dark, oval bodies with many fine red lines on the back. Undersides of wings are red. Nymphs are small, bright red, crawling insects.

DAMAGE

Feeding before bloom is known to cause bud and fruit drop, as well as fruit malformation.

MANAGEMENT

Watch for boxelder bugs in the vineyard. Treatment, if needed, should be aimed at adult bugs and applied in early spring as flower buds are developing.

Common name Amount/Acre R.E.I.+ P.H.I.+
(trade name)   (hours) (days)
When choosing a pesticide, consider information relating to impact on natural enemies and honey bees and to the environment.
 
A. ESFENVALERATE*
  (Asana XL) 9.6 fl Oz 12 14
  MODE OF ACTION: A pyrethroid (Group 3)1 insecticide.
  COMMENTS: Will provide suppression. Only effective when temperature is above 75°F. Damage occurs in spring when adults feed on developing flower buds and cool weather is common, so take note of daily temperature. Do not exceed 7 applications/season or spray at less than 7-day intervals.
 
 
+  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 until the orchard can be harvested. In some cases the R.E.I. exceeds the P.H.I. The longer of these two intervals is the minimum time that must elapse before harvest may take place.
* Permit required from county agricultural commissioner for purchase or use.
1 Modes of action are important in preventing the development of resistance to pesticides. 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. 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: Kiwifruit
UC ANR Publication 3449
Insects
J. K. Hasey, UC Cooperative Extension, Sutter-Yuba counties
R. A. Van Steenwyk, Insect Biology, UC Berkeley
Acknowledgment for contributions to insect section:
W. H. Olson, UC Cooperative Extension, Butte County
R. H. Beede, UC Cooperative Extension, Kings County

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Statewide IPM Program, Agriculture and Natural Resources, University of California
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