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Subtropical Fruit Crops of San Diego County
University of California
Subtropical Fruit Crops of San Diego County

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Topics in Subtropics Blog

  • Clogging emitters?

    Added May 23, 2013
    asphyxiation

    Maintenance of Microirrigation Systems Predicting Clogging Problems "What should I watch for?"   Solutions to Existing Clogging Problems "I Have a Clogging Problem and I Want to Solve It"   System evaluation for emission...

  • Water infiltration problems

    Added May 20, 2013
    ponding

    By the beginning of the irrigation season, the entire root zone is usually wetted by winter rainfall.  Under low volume irrigation during the irrigation season only fifty percent or less of the root zone is wetted with each irrigation on most soil...

  • DOTHIORELLA LEAF AND STEM BLIGHT

    Added May 10, 2013
    Dothiorella 2

    Stem and leaf blights are symptoms that appear for various reasons – high rainfall or humidity, spray burn, chewing insect infestation.  Here in California we can add other causes, such as drought and salinity burn.  These conditions can...

  • It's fire season again, and it's going to be a long one

    Added May 8, 2013
    FightingFire web

    Here's a list of links for growers and homeowners on how to prepare for fire and in the case of fruit trees, how to treat them after they have burned and how to calculate the loss of a commercial fruit tree. Tree and Vine Loss Calculators Spread sheets...

  • Soil Moisture Sensors

    Added April 18, 2013
    tensiometer2

      Soil moisture sensors fall into two broad categories, volumetric and tensiometric methods. One tells you how much water is in the soil and the other tells you how tightly the soil holds on to the water.  Volumetric methods require a...

  • Spray Adjuvants: what’s in a name?

    Added April 4, 2013
    spray

    If you can’t speak the language, you can’t follow the conversation.  Talk about adjuvants used in agriculture can be filled with unfamiliar terms like activator, non-ionic surfactant, penetrant, humectants, and buffers.  To help...

Avocado Production in California

Book 1: A Cultural Handbook for Growers

Book 1: A Cultural Handbook for Growers

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: 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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Useful Links

The Topics in Subtropics Newsletter provides news from the Subtropical Tree Crop Farm Advisors in California and is aimed at keeping the general public (both homeowners and ag growers) informed of new pest species, best management practices for tree crop operations and a multitude of other useful tools for the industry. 

For more avocado information, visit Gary's avocado page. To read our featured article, click this title Mysteries of Mandarins: Sex, Seedlessness, and New Varieties.


Vegetables and Strawberries
Here is a recommended link for this topic:
Vegetable Research and Information Center (VRIC)

Floriculture, Nursery Crops and Pest Management
To read "Using Petunia Indicator Plants to Monitor Tospoviruses in Ornamentals", click the link below:
Using Petunia Indicator Plants

Small Farms Program
Here is a publication and recommended link:
Ag Directory & Guidelines for Agricultural Enterprises
Small Farm Center

Pitahaya in California (download info)

Dairy Information
If you are a commercial entity, you can contact Nyles G. Peterson, Area Farm Advisor, for questions about dairy management, waste management, milk quality, milking management, and dairy goats.
Phone (909) 387-3318
Fax (909) 387-3306
E-mail ngpeterson@ucdavis.edu

Webmaster Email: rkrason@ucdavis.edu