- Author: Brooke Jacobs
The Fruit and Nut Research and Information Center just released a new booklet developed in collaboration with University of California faculty, Cooperative Extension Specialists and Advisors, and the California Pistachio Research Board.
Over the past two years I scoured through file cabinets, slide trays and microfiche (do you remember those?) in the UCD Shields Library basement to compile a collection of pistachio deficiency symptoms photographs. This collection was bolstered by a unique series of images from the dissertation of Dr. Valdemar Gonzalez-Reyna, a graduate student with Dr. Kay Uriu in the Department of Pomology in 1986. As a graduate student Dr. Gonzalez-Reyna conducted a series of controlled greenhouse experiments to characterize the symptoms of individual nutrient deficiency in pistachio. His images are combined with images from the R. Beede (UCCE Advisor emeritus, Kings County), Dr. Brown (Professor, Dept. of Plant Sciences, UCD), and Dr. Ferguson (UCCE Specialist, Dept. of Plant Sciences, UCD) taken at field calls throughout the state and later verified with leaf nutrient analyses.
It is our hope that the images and descriptions available in this booklet will provide a valuable companion to leaf and soil nutrient analyses in diagnosing potential nutrient deficiencies in pistachio. To get a free copy of the booklet contact your local Cooperative Extension Farm Advisor. This project was developed with funding from the California Pistachio Research Board.
Dr. Valdemar González-Reyna
Professor Emeritus, Instituto Nacional de Investigaciones Forestales, Agricolas y Pocuartas, Coahuila, Mexico
Farm Advisor Emeritus, University of California Cooperative Extension, Kings County, CA
Dr. Louise Ferguson
Extension Specialist, University of California Cooperative Extension, Department of Plant Sciences, UC Davis, CA
Dr. Patrick Brown
Professor, Department of Plant Sciences, University of California, Davis, CA
Dr. Brooke Jacobs
Associate Specialist, Fruit and Nut Research and Information Center, Department of Plant Sciences, University of California, Davis, CA