Test PB Collection: FTE

This award highlight plants that have performed well on the WUCOLS Medium levels of irrigation. They maintained high health and aesthetic quality ratings over the deficit season on 40%, 50% or 60% of ETo.

Starting in 2018, researchers asked Open House participants to name their favorite plant at the event. Below are the top 3 favorite plants at each Open House event, Spring, Summer, and Fall of 2018 and 2019.

Brick House Pink rose We reserve our Blue RibbonTM for plants that maintain high standards of aesthetic quality over the growing season on our lowest irrigation treatment (20% of ETo). Based on our evaluations these plants should perform well on low water in the landscape.

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.

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.

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