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ARS Home » Pacific West Area » Davis, California » Crops Pathology and Genetics Research » Research » Research Project #433596

Research Project: Evaluating the Effectiveness of Surface Renewal and Other Technologies to Determine Almond Tree Water Use and Water Stress-RENEWAL

Location: Crops Pathology and Genetics Research

Project Number: 2032-21220-007-09-T
Project Type: Trust Fund Cooperative Agreement

Start Date: Aug 1, 2017
End Date: Jul 31, 2019

Objective:
1)Evaluate the effectiveness of the new stand-alone surface renewal (SR) method to accurately quantify almond orchard use. 2)Compare stress indices from SR with several other to determine best combo for almonds. 3)Continue efforts to develop infrared temperature radiometers (IRT) based measurements of evapotranspiration (ET) using the surface renewal technique. 4)Compare IRT and aerial imagery derived indices with direct physiological measurements made from 2013-2017 in an Almond irrigation trial located in Kern County, CA.

Approach:
Compare water use/stress of almond trees growing in a weighing lysimeter with estimates from our new SR method, IRT sensors, and traditional physiological analyses. Further develop our efforts on testing whether IRTs work effectively in deriving water use from the canopies. Utilize existing datasets from farm advisor cooperators to explore the effectiveness of the commercial SR sensors.