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. 2018 Oct 25;75(2):556–563. doi: 10.1002/ps.5209

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© 2018 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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PS-5209-FIG-0001-b — Relative colony‐forming unit (CFU) count of Beauveria bassiana conidia on agar plates after exposure to UV‐B radiation for 4 h. Test substances were used at a 10% concentration. Polysorbate 80 was tested at a 1.77% concentration because it was used as an emulsifier for oil additives. Percentage survival was calculated in relation to non‐irradiated plates within each experiment. hum. ac. K, humic acid potassium; hum. ac. Na, humic acid sodium; ps‐80, polysorbate 80; R. luteola, Reseda luteola.