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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Sodic Soil

When MIght Gypsum Work?

April 15, 2025
By Ben A Faber
With the drought our perpetual salt problems are exacerbated due to less water and often more saline water.  The question keeps coming up if gypsum (calcium sulfate) can help correct the problem.  And the answer is maybe, but along the coast, probably not.  The problem there is confusion about…
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Calcareous/Carbonaceous Soil

Carbonate Soils

April 15, 2025
By Ben A Faber
Usually called Calcareous? Or should it be called Carbonateceous soils?  Is Gypsum Needed for a carbonate dominated soil  Read on.Soil pH or the “acidity” or lack of acidity of a soil can be confused by the different uses and chemistries that surround the term pH, or the power of hydrogen. This can…
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Come down or Zoom in for this Avocado Seminar on Irrigation

Avocado Seminar - Water

April 15, 2025
By Ben A Faber
California Avocado Growers Seminars Series 2025 Our Next SeminarApril 16 (1 -3 PM)  Water Knowledge isPower KnowledgeIn-Person and Zoom Topics and Speakers Sources of ET information and their ReliabilityBy Ali Montazar - UCCE Irrigation Advisor, Imperial/San Diego/ Riverside counties…
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Identifying Mechanism to Citrus Greening

April 15, 2025
By Ben A Faber
Scientists decode citrus greening resistance and develop AI-assisted treatmentPeeChinese Academy of Sciences HeadquartersYE JianInstitute of Microbiologyjianye@im.ac.cn Cell: 86-10-64807363 image: Decode natural resistance against citrus greening disease and Develop AI-designed disease…
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What Bt looks like

Managing Pesticides

April 15, 2025
Nature’s plan for delaying pest resistance decipheredA new study cracks the code for increasing sustainability of the pest-killing proteins in genetically engineered crops.University of ArizonaElena LopezUniversity of Arizonapelopez@arizona.edu Cell: 5203428712 Farmers in dozens of countries have…
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