Topics in Subtropics

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Topics in Subtropics Blog
You can subscribe to this  blog with multiple entries per week reflecting what's happening with subtropical crops and upcoming educational events.  Just click on the "Subscribe" button just to the right of this paragraph.  There's also our seasonal quarterly Topics in Subtropics newsletter found at our Ventura, Santa Barbara, San Luis Obispo, Riverside, San Diego, Tulare and Kern Counties Cooperative Extension websites.
citrus manual

Citrus IPM Update

May 10, 2019
By Ben A Faber
It's not easy to update the IPM Handbook in paperback, but You can check out the latest IPM Pest Management Guidelines for arthropod pests at: http://ipm.ucanr.edu/PMG/selectnewpest.citrus.html The other sections will be updated soon.
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hlb defprmed citrus

New News About HLB

May 8, 2019
By John Krist Chief Executive Officer of the Farm Bureau of Ventura County. Contact him at john@farmbureauvc.com.
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Leaf tissue of HLB orange

Critical Leaf Nutrient Levels for Citrus

May 7, 2019
By Ben A Faber
Critical Leaf Nutrient Thresholds to Diagnose Deficiencies in HLB Trees By Arnold Schumann, Laura Waldo, Tripti Vashisth, Alan Wright and Kelly Morgan Huanglongbing (HLB) disease severely impacts the nutrient status of citrus trees, particularly by stunting the feeder roots and causing measurable de...
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hairy fleabane 1

Glyphosate Resistance in Orchards

May 6, 2019
By Ben A Faber
There has been a good overall discussion of herbicide resistance found in plants and how they can affect orchard management. Check out this presentation by UC Cooperative Extension Weedologist, Brad Hanson, in the "past Webinars" section: https://ucanr.
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Citrus CUPS

The Future of Citrus?

May 3, 2019
By Ben A Faber
Growers of one of Florida's signature citrus crops, the grapefruit, may see more production and possibly less of the deadly citrus greening disease.
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