Topics in Subtropics

Avocado Trunk Cankers 2016/17 was a normal rainfall year in the avocado growing region of California. But this was on top of lots of winters with such low rain amounts that there was not adequate salt leaching. No rain, no leaching.

Recently a grower called up with a beautiful scale that the PCA couldn't identify. I could just marvel at the beauty of it and wondered what in the heck it was. It didn't look like any scale I had seen in the area and others who were queried didn't know either.

IMAGE: Orbicules or "Ubisch bodies " (300 - 600nm granules), characteristics of Cupressaceae pollen, are visible on the surface of the exine (outer membrane).

A recent publication from CA Fish and Wildlife has some wonderful photos of trees that have been known to be attacked by either or both of the Shot Hole Borers, Polyphagous or Kuroshio. The publication can be found at: http://www.southcoastsurvey.

Controlling Pests in Avocados Round table Meeting Sept. 28, 2017, 8:00 AM - NOON Fallbrook Public Utility District, 990 E. Mission Rd, Fallbrook, CA 92028 DPR Hours Upon Approval Light refreshments & pastries will be available Please Register for this free event: https://ucanr.edu/survey/survey.