General situation  Based on limited local travel, it looks like planting in the Dixon/Vacaville Area is past its peak, if not done for the season.  The weather is starting to settle into its summer pattern and we are looking at temperatures building from a relatively cool spring.  A high in the upper-mid 90's is forecast for Thursday.  That sort of temperature pattern will certainly accelerate thrips development so we might see some changes in predicted dates for generations as we pass through the next 2-3 weeks.

Thrips generation timings According to the degree-day projection, we are running up to peak egg hatch for generation 2 at the moment and generation 2 adults are expected to peak around 5/29.  Unless you are seeing early TSWV symptoms, or consider crops to be at high risk, it's unlikely that generation 2 will be carrying much virus, but if you are concerned about early attack please contact a UCCE adviser to discuss your situation.  Generation 3 adults are predicted to peak on 6/23 (although, with hot weather on the way this might come forward a few days).  The current projection runs until July 1. We'll be extending the projections this week and posting another update in 7-10 days.