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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avocado irrigation

Microirrigation, Fertilizers and Clogging

June 21, 2013
By Ben A Faber
Microirrigation (drip, microsprinkler, fan jet) applies water through small openings and can easily be prone to clogging. For this reason, filtration is used to avoid introducing sediments into the system and all fertilizers are injected before the filters to avoid their clogging the system.
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chemigation

Chemigation Injection Devices

June 12, 2013
By Ben A Faber
Chemicals are often injected through irrigation systems, hence the name chemigation. When applied to fertilizers, it is called fertigation.
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armillaria

Armillaria or Oak Root Fungus

June 10, 2013
By Ben A Faber
Armillaria Root Rot There have been a lot of new avocado orchards planted during the last few years. These often have been in old Valencia orchards or lemons that had poor production. In order to save money, growers have just cut the trees at ground level and replanted the avocados near the stumps.
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