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 Potato Late Blight Alert

    Added May 26, 2016
    Eliminate Volunteer Potatoes Growing on Ditches and Field Borders

    The recent thunderstorms, rain, and overcast conditions have been a huge benefit for reduced irrigation demand and drought relief. On the flip side, these environmental conditions have created favorable conditions for early season late blight...

  • Clover Root Curculio Found in Several Klamath Basin Alfalfa Fields

    Added May 10, 2016
    Wilted alfalfa caused by clover root curculio feeding and secondary disease

    The warm weather this week is hopefully the best remedy for jump-starting many alfalfa fields damaged by frost and hail the last couple of weeks. If you have fields with frost damage that are not improving, you might dig some alfalfa plants and look at...

  • Alfalfa Weevil Resistance to Pyrethroid Insecticides Found in Scott Valley

    Added May 10, 2016
    Table Alfalfa Weevil Resistance Blog

    Farming sure can be challenging. I guess that is what keeps it so interesting…but a little less interesting might be good sometimes. Last year Klamath Basin alfalfa growers had to deal with blue alfalfa aphid (BAA) and the associated cost of...

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