Date:		 Mon, 16 Jun 2003 
To:		 AgEnto@listserv.montana.edu
Subject:	 stink bugs in wheat 
From:		 Sue Blodgett

Jim Berg, from the winter wheat breeding program has noticed stinkbugs occurring in headed winter
wheat (about 50% headed).  We had some of these last year in the Triangle and since the threshold
for stink bugs is relatively low, 3-4 adult bugs per 100 sweeps, it's a good one to be aware of.
Last year stink bugs could readily be found on wheat heads, where they insert their piercing-sucking
mouthparts and cause seed to shrivel.

Three to four adult stink bugs per 100 sweeps with a standard insect sweep net may warrant an
insecticide treatment.Heavy infestations during heading can damage kernels, and reduce yield and
quality.  Treatments with Lannate LV (7 day PHI), MustangR (14 day PHI), or Warrior TR (30 day PHI)
should be effective.  Mustang and Warrior are registered only on wheat.

More information can be found under Say's stink bug, small grain in the High Plains IPM Guide
located at:  http://scarab.msu.montana.edu/HPIPM/

Sue Blodgett, Assoc Prof

Dept Entomology, L. Johnson Hall

MontanaStateUniversity

Bozeman, MT59717

Phone:  (406) 994-2402           Fax: (406) 994-6029

blodgett@montana.edu