Patrick Brown
Professor Patrick Brown, of the University of California, Davis Department of Plant Sciences, needs the help of some citrus growers with high-producing citrus orchards for a special project. He is looking for growers who have both navels and mandarins that are productive.
“It’s a non-destructive study. We just want to collect leaf samples and analyze them for nutrient levels,” said Brown. “We want to say thank you in advance to the growers for their willingness and interest in participating in this program.”
The project is a study to develop and extend nutrient best management practices for citrus in the state of California. The non-destructive sampling plan includes, over the course of two seasons, sampling for highly productive mandarin and orange orchards.
A composite leaf sample from 20 trees in each orchard will be collected from fully expanded leaves in the spring (May) and in the summer (September). The findings will be integrated, and best management practices for citrus species will be developed that will be available to growers. Brown emphasized that all the information about samples and data will be kept confidential.
Growers should contact Brown at 530-752-0929 if they have any questions. Fresno and Tulare county growers also can call Greg Douhan, area citrus advisor, at the University of California Cooperative Extension in Tulare at 559-684-3312.
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