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.
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navel split

Navel Orange Splitting

February 10, 2025
By Ben A Faber
These are hard days for navel oranges. Drought stress. Salt stress due to drought. And no rain this fall. And here comes the big one. This is ripe for navel splitting. This time of year when they are starting to build sugar, they are also ripe for splitting.
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HLB symptoms

HLB in Brazilian Citrus

February 7, 2025
By Ben A Faber
The recent U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) annual report on Brazilian citrus included updates on citrus greening disease, production and planted area.
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ACP adult and nymph

ACP Resistant Tree?

February 5, 2025
By Ben A Faber
Scientists at the University of Florida are testing a new type of citrus tree that can fight off the tiny insects responsible for citrus greening.
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2025 UC Riverside Citrus Day Agenda 2-20-2025 with link Final

UCR Citrus Day Coming UP

February 3, 2025
By Ben A Faber
UC Riverside excited to announce that registration is open for the 2025 Citrus Day at UCR on February 20, 2025 from 7:15 to 2:00. We are looking forward to seeing you and sharing the exciting ongoing research in citrus. In additional to a great list of speakers, Dr. Kim Bowman (Univ.
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bee hotel

Creating Native Bee Nests

January 29, 2025
By Ben A Faber
Checking in at bee hotels: trap-nesting occupancy and fitness of cavity-nesting bees in an urbanised biodiversity hotspot Kit S. Prendergast The design of bee hotels is critical - untreated wood, holes a range of diameters (I suggest 3-10 mm), lengths min 10 cm.
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