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2023 Dormant Surround impact copy

In 2023 plots with Surround applications at dormant (before April 3) compared to delayed dormant or later had lower psylla numbers (from 19 plots). April 3, 2023 taps of 7 in plots with dormant Surround compared to 24 with no Surround yet applied results in 1-3 psylla per tray second and third generation compared to 4-7 where Surround was applied later.

Figure 1. In 2023 plots with Surround applications at dormant (before April 3) compared to delayed dormant or later had lower psylla numbers (from 19 plots). April 3, 2023 taps of 7 in plots with dormant Surround compared to 24 with no Surround yet applied results in 1-3 psylla per tray second and third generation compared to 4-7 where Surround was applied later.

Washington State University