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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leaf roller avocado

No Longer a New Pest

July 2, 2021
By Ben A Faber
This article was first posted in July of 2020 when it wasn't clear what this leaf roller/leaf miner was going to do. In the last couple of weeks I have heard from two PCAs from Ventura saying that they are having to spray for it. So, it is back and it is probabl6y going to hang around for a while.
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SpottedWingDrosophilaLayingEggs-850x491

Spotted Wing Drosophila Controlled? Naturally?

June 30, 2021
By Ben A Faber
Scientists from the Agricultural Research Service (ARS) are working to understand how something can be equally effective as both a government-approved food additive and as a pesticide. Methyl benzoate is a naturally occurring compound produced by plants. The U.S.
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gopher Crescent-shaped mound and plugged burrow opening of a pocket gopher

On-Line Gopher Control

June 29, 2021
New online course on the management of ground squirrels and pocket gophers now available Cheryl Reynolds, UC Statewide IPM Program We're pleased to announce that a new online course on managing ground squirrels and pocket gophers has been added to UC IPM's growing library of online training courses.
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citrus yellow vein disease

A Citrus Trojan Horse

June 25, 2021
Scientists are hoping the RNA of an obscure infection can one day be used like a Trojan horse to deliver life-saving treatments to citrus trees. UCR microbiologist Kiran Gadhave examining citrus for yellow vein disease symptoms.
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shot hole borer feeding

Beetle:Fungus Symbiosis?

June 24, 2021
By Ben A Faber
David Peris, Xavier Delcls, Bjarte Jordal https://doi.org/10.1111/brv.12763 A beetle bores a tree trunk to build a gallery in the wood in order to protect its lay. As it digs the tunnel, it spreads ambrosia fungal spores that will feed the larvae.
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