Intermountain Research and Extension Center
Intermountain Research and Extension Center
Intermountain Research and Extension Center
University of California
Intermountain Research and Extension Center


Four miles from the Oregon border, in Tulelake, California, the Intermountain Research and Extension Center (IREC) is one of nine centers under the University of California Division of Agriculture and Natural Resources. IREC supports and facilitates University of California research in field and vegetable crops grown in northeast California, and supports conservation of natural resources in the Klamath Basin.

Please explore our website. Specific contents include announcements, calendar reminders, local weather, biological data, and past & current research reports.

Opportunities for Research and Extension at IREC

Center Highlights 2014

Did You Know?

Intermountain REC Blog

  • 2016 Outlook for Seedcorn and Onion Maggot

    Added March 30, 2016
    Maggot Flies Trapped in IREC Onion Fields from 2011 to 2013

    Several experiments were conducted at IREC from 2011 to 2013 examining insecticides applied at planting for protecting onion stands from maggot damage. The results show seed treatments with OI100 (spinosad) or Sepresto (clothianidin +...

  • Winter Potato Evaluations

    Added January 8, 2016
    Red potato being washed & polished

    Hooray for Snow!  The wheellines are tied down, the mint still has been winterized, and snow covers the potato fields at the Intermountain Research and Extension Center.        The winter weather doesn't stop the work here,...

  • Continuing Education Units Offered by UC IPM Online

    Added November 13, 2015

    Are you looking for continuing education units (CEUs) to complete your renewal application this year for the Department of Pesticide Regulation (DPR)? The UC Statewide IPM Program has several online courses available that can help you get those...

Webmaster Email: