Ongoing research

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.

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.

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.

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

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.

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...

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

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.

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.

For convenience researchers have sorted the results into several categories for easy access, to see the entire list of plants click here.