Red Scale Degree Day Update June 11

Jun 11, 2012

Degree days are about 1 week behind the 30 year average.  This year in Tulare County, the first male flight occurred in mid-March, the first crawlers appeared in mid-May, and this week as the degree days approach 1100, the 2nd flight of male scale has begun. 

Kern: 1089

Tulare: 1051

Fresno: 1036

Madera: 915

Tulare county graph


By Elizabeth E Grafton-Cardwell
Author - Emeritus Entomology Cooperative Extension Specialist