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 pruning

Avocado Pruning

January 30, 2014
By Ben A Faber
A general rule of thumb about pruning trees is that only healthy trees should be pruned. Pruning is a devitalizing practice that comes at the expense of the roots. If an avocado has root rot, make sure the tree has been treated with one of the phosphite products to get the root system healthy.
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winter yellows

Winter Yellows

January 15, 2014
By Ben A Faber
Several calls have come in from growers lately about yellow avocado and citrus trees. the yellowing is most common on the late summer flush leaves or can affect the whole canopy on young trees. In severe cases leaves fall.
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carpenter bee

Bee Research Buzzing at Cal State Channel Islands

January 13, 2014
Pollination ecologists have typically studied a focal plant species and one or a few closely related pollinator taxa, such as bumblebees, which fostered the view that plant-pollinator relationships are highly specialized.
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