IPM Insect Update – September 12, 2016

University of California IPM Insect Update
Tehama County
9/12/2016

Insect First Biofix Second Biofix Third Biofix Fourth Biofix Activity Moths/Day Avg. Deg. Days / Day Day Degrees from Biofix
Codling Moth 3/24 5/31 7/11 8/15 .14 26.7 741
Oriental Fruit Moth 3/17 5/19 6/27 7/28 .75 32.2 1500
Peach Twig Borer 4/7 5/31 7/11 8/22 4.1 26.8 530
Navel Orangeworm Eggs 4/7 - - - .79 22.7 3064
San Jose Scale 3/21 - - - - 31.0 3702
Walnut Scale Crawlers 5/16 - - - - - -

  • In the walnut orchard we monitor, we now have 3 sprays on for WHF. Be careful – every orchard is different. Watch your traps and treat accordingly.
  • On 8/29 and 9/12 we measured a small increase in  scale crawler activity.
  • Additional Pest management information is available at the UC IPM website including a day degree calculator (http://www.ipm.ucdavis.edu).

Richard P. Buchner and Cyndi K. Gilles
Orchard Advisor & Research Associate
UC Cooperative Extension Tehama County
(530) 527-3101

Thank you for our trap supplies!

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