Thrips/TSWV status in Yolo & Colusa

General outlook & thrips populationPlanting will be wrapping up over the next couple of weeks, though the heat wave coming up next week may cause delays. In general, it’s been good spring weather and earlier plantings are progressing well. The warm weather in the forecast has pushed up population…

Thrips populationThrips are currently in Generation 2, with adults predicted to peak in the second week of May. Spring temperatures remain similar to long-term normals, and population predictions have not changed much from last update. Thrips and TSWV monitoringWe have started to monitor thrips coming…

General situationThe oldest tomatoes have been in ground for more than a month, and planting is progressing rapidly. The warm weather in the past two weeks has pushed thrips population projections forward by a few days compared to the last report. Thrips populationFirst-generation adults are still…

General situation, thrips population developmentPlanting is in full swing. Temperatures and precipitation this spring are close to historic norms, and the thrips population predictions are very similar to those we saw last year. We’re currently at the peak of 1st-generation adults; they’ll be laying their…

General situation Almost all tomatoes are now in the ground. New TSWV infections will cause more yield loss in later than earlier plantings since the younger the plant is when it is infected, the more severe the disease will be.