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Tomato planting is wrapping up, and some early-planted fields are approaching canopy closure. Mid-to late-May has been on the warm side of normal, and the estimates for upcoming thrips generations have been moved slightly forward. Generation Predicted date Gen 3 peak adults 5/24 Gen 4 egg hatch 6/1 Gen…
2026 3rd Report—Although April and May temperatures have generally been on the cool side of normal, the hot March means that thrips generations are still ahead of normal. Generation 2 adults are feeding and laying their eggs, with generation 3 peak egg hatch predicted in a few days. Generation Predicted…
After the record heat in March, April has cooled to more normal temperatures. Thrips generation predictions have not changed much since last update. We’re approaching the peak of the second generation; adults are feeding and laying their eggs. The third generation is currently predicted to peak around the…
With a dryer-than-average winter, warm nighttime temperatures, and record-breaking high daytime temperatures in March, 2026 is off to a warm start. Figure 1. Recorded temperatures (blue bars) between 10/01/2025 and 10/23/2026 for Davis, CA, compared to our normal temperature range (beige…
General outlook & thrips population Tomato planting is over, and with the excellent weather we have been having fields are progressing well. Adult 3rd generation thrips are peaking, and over the next few weeks will be laying their eggs. Any thrips that acquired the virus as larvae by…
