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

Strategic Plan
Strategic Plan

Tulelake Farm Advisor is Hiring!

The County of Siskiyou invites applications for the position of Cooperative Extension Coordinator - Extra Help.  This is a part-time job located at the Intermountain Research and Extension Center in Tulelake, CA.  For a complete Job Description, click here.


Event Name

Intermountain REC Blog

  • New Research on How to Estimate Nitrogen Mineralization for Crop Fertility

    Added March 10, 2017
    Figure 1: Location and range in soil organic matter (SOM) content (SOM) of the sites sampled in spring 2016.

    The increase in organic crops in the Klamath Basin has spurred a lot of interest in better understanding how mineralization of soil organic matter can release stored organic compounds into plant-accessible forms.  Tulelake's...

  • New Research Papers Available!

    Added March 10, 2017
    Organic Potato Amendments and Cover Crops

    Many of the research papers that were presented at the 2017 Garlic and Onion Symposium and the 2017 Klamath Basin Potato Seminar are now available under the heading Past Research Reports on the IREC website 2016 Research Reports  

  • California Small Grains Survey - Please Participate!

    Added February 22, 2017
    Small Grain Nursery at Intermountain REC

    <<  Re-posted from UC Small Grains Blog  >>  We need your help to better understand the current status of small grain production in California and how to focus our research and extension efforts moving forward. If you are...

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