Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
Division of Agriculture and Natural Resources
University of California
Division of Agriculture and Natural Resources

California red scale workshop

Date: September 28, 2017

Time: 8:00 AM - 4:00 PM

Contact: Jasmin Del Toro: 559-592-2408 ext 151

Sponsor: Lindcove Research and Extension Center

Event Details

Workshop on Identification of California Red Scale and Parasite Life Stages

Thursday, September 28, 2017

Lindcove Research and Extension Center

22963 Carson Ave., Exeter, CA 93221

Sign up by September 15 with Jasmin Del Toro (559) 592-2408 ext 151. 

Instructor: Dr. Beth Grafton-Cardwell

Course Objective: To teach PCAs how to recognize the various life stages of scale and their parasites.  With this knowledge PCAs can determine the level of parasitism of California red scale in their citrus orchards and make better decisions about scale control tactics.

8:00-8:30 a.m. Registration: Lindcove REC

8:30-12:00

A. Introduction: The armored scale problem and best management practices (chemical, biological, pheromone controls)

B. Lecture: Life stages of California red scale

C. Microscope: Identification of scale stages, including molts and instars as well as differentiation of males and females

D. Lecture: Life stages of Aphytis melinus and Comperiella bifasciata

E. Microscope: Identification of external parasitization by Aphytis melinus and internal parasitization by Comperiella bifasciata in armored scale

12:00-1:00  Lunch (provided)

1:00-2:00 p.m. 

A. Continuation of microscope identification of scale and parasitism

B. Quiz on scale stages and parasitism

2:00-4:00 p.m. Evaluating fruit from field sites

Field collected fruit evaluations:  Counting scale stages, including molting and differentiation of males and females and external parasitization by Aphytis melinus and internal parasitization by Comperiella bifasciata in armored scale

Cost of the Workshop is $40 (including lunch and classroom materials).  Class size is limited to 25 participants so early sign-up is recommended.  A check will reserve your place in the class and checks are made payable to the UC RegentsWe request that participants bring a hand lens and 10-20 pieces of scale-infested fruit from one of their own orchards to the class (make sure to remove all leaves and stems and bring it in a closed bag to protect LREC from Asian citrus psyllid).  If you own a dissection microscope and light, please let us know and bring it with you.   Continuing education credits (6 other) have been approved for this course.

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