Subtropical Fruit Crops Research & Education
University of California
Subtropical Fruit Crops Research & Education

We are San Diego & Riverside County Farm Advisors

Topics in Subtropics Blog

  • Biological Control of Giant Reed- Arundo

    Added April 24, 2017
    arundo damage3d

    Editor: Guy B Kyser The giant invasive grass arundo (Arundo donax), one of the weeds targeted under the USDA-ARS-funded Delta Region Areawide Aquatic Weed Project (DRAAWP), has been re-acquainted with one of its natural enemies imported from arundo's...

  • Soil and Water pH Affect Root Helath in HLB Citrus

    Added April 19, 2017

    At the recent HLB Conference in Florida a paper was given that reinforces the need for appropriate soil and water pH to maximize root density and tree health.  The industry there is dominated by a range of rootstocks and by Valencia-like...

  • Shoot and Twig Dieback of Citrus

    Added April 19, 2017
    branch dieback on clementine

    Recently, an outbreak of shoot and twig dieback disease of citrus has been occurring in the main citrus growing regions of the Central Valley of California (Fig 1). The causal agents of this disease were identified as species of Colletotrichum, which are...

  • Kaolin Control of Asian Citrus Psyllid

    Added April 17, 2017
    kaolin spray

    Psyllids as a pest group have very few specific predators that can be used in biocontrol.  Instead there can be some control by generalist predators, like minute pirate bugs, spiders, lady bug beetles and predatory thrips. Predation, though, does...

  • The Remarkable Avocado Flower - It's Here and Now Watch it.

    Added April 13, 2017
    avocado flowers

                        Adapted from "The Remarkable Avocado Flower"By Dr. B. O. Bergh       IntroductionThe avocado (Persea...

  • The Citrus Research Board and Growers

    Added April 12, 2017
    citrus and mountains

    Funding of the Citrus Research Board is an investment in pertinent research that supports the industry, making the information accessible to all within the industry from pest control advisors to packing houses to farm managers and others within the...

Avocado Production in California Books

Book 1: Background Information

In Book 1, Gary S. Bender, Farm Advisor, takes you through the history of the avocado industry in California and teaches you about grove development.

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Book 2: Cultural Care

Book 2 focuses on cultural care and includes articles on irrigation, fertilization, disease and insect control, vertebrate pest management, pruning and frost management. The author for most of the articles is Gary S. Bender, Farm Advisor for Subtropical Horticulture in San Diego County.

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