University of California Small Grains
University of California Small Grains
University of California Small Grains
University of California
University of California Small Grains

Stress Stability

Fresno_TerminalDrought
In order to identify varieties that perform well in both good conditions and under stress, we conduct side-by-side trials at a subset of our statewide trial locations. In these trials common wheat varieties are grown under fully watered and fertilized conditions and under conditions of terminal drought or nitrogen stress. These trials help to identify varieties that perform well under a wide range of management conditions, and help us understand why certain varieties perform better or worse in certain years and locations.

Average_Stress_Stab_HardWheat_HeatMap_CustLabels

Heat map represents the average normalized response of common hard spring wheat varieties to terminal drought and nitrogen (N) stress in trials conducted in Yolo and Fresno Counties of California during the 2016-2017 and 2017-2018 seasons. Terminal drought and N stress responses are based on averages of 3 and 4 site-years of data, respectively. Stress trials are managed identically except for the exclusion of irrigation after the vegetative growth period (terminal drought) or the exclusion of N fertilizer additions throughout the season (N stress).

Summary Table (pdf | xls)

Site-year summary figures:

How are these results calculated?

Stress_Response_Schematic

Webmaster Email: dngiang@ucdavis.edu