Archive Nut, Prune and Olive Programs

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May 2025Archived

 

Field picture submitted by Elizabeth Fichtner

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Field Layout

Each site has three field types: Full Sun, 50% Shade, and the Large Plant Field (also in full sun). In the first two fields plants are spaced 2 meters apart in and between rows, while plants are spaced 3 meters apart in the large plant field.
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Irrigation Teatments

At each irrigation, enough water is applied to refill 50% of plant available water (PAW) in our targeted root zone volume around each plant: a 1 m-wide, 0.5 m-deep cylinder. Irrigating at this stage prevents undue stress on plants, and is the practice used most often by smart controllers.
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NUTS & BOLTS

Reference Evapotranspiration-based Irrigation Evapotranspiration or ET is a measure of all the water lost to the atmosphere from the combined processes of evaporation from the soil and plant surfaces and transpiration from plants.
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ETo Irrigation

What is evapotranspiration (ET)? Evapotranspiration or ET is a measure of all the water lost into the atmosphere from the combined processes of evaporation from the soil and plant surfaces and transpiration from plants.
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Data Collection

Researchers collect monthly growth measurements and quality ratings to assess the effects of the different irrigation treatments on plant growth, health, and appearance.
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Open House

Participants rating plant material at the 2019 Davis Summer Open House. (SK Reid) Background Each spring, summer, and fall the project opens the field sites to expose participants to new plant material and asks guests to rate the performance of selected plants on each irrigation treatment.
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REPORTS & PUBLICATIONS

UCLPIT Report 2008-2009 UCLPIT Final Report 2009-2011 UCLPIT Report 2009-2011 SHADE UCLPIT Final Report 2011-2013 UCLPIT Final Report 2012-2014 UCLPIT Final Report 2012-2014- Kurapia UCLPIT Final Report 2013-2015 UCLPIT Final Report 2014-2016 UCLPIT Final Report 2015-2017 UCLPIT Final Report 2016-20...
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PLANT INDEX

The plant index contains irrigation recommendations and aesthetic ratings results for all of the plants that UCLPIT program has evaluated.
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HISTORY

Karrie Reid and Loren Oki (JA Sisneroz) The UC Landscape Plant Irrigation Trials (UCLPIT) began as a graduate student research project taken on by Karrie Reid in 2004 under the guidance of her advisor Loren Oki, UCCE Specialist at UC Davis.
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CONTACT US

Please direct questions about the trials and inquires about submitting plant material to Karrie Reid, skreid@ucanr.edu, and Jared Sisneroz, jasisneroz@ucdavis.edu. For regular project updates follow us on facebook: https://www.facebook.
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