California Red Scale Degree Days Update

First generation California red scale crawlers emerge at 550 degree days (DD).  As of Monday, Kern County had accumulated 483 DD, and so the crawlers will begin emerging next week.  Tulare County accumulated 443 DD and crawlers should emerge in the next 10-14 days.  Fresno and Madera crawlers will emerge after that. See my web site for graphs of the progress of the degree days and a comparison to the 30 year average (we are about a week later than normal). http://ucanr.org/sites/KACCitrusEntomology/Home/California_Red_Scale/Degree_Days_885/

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