Gray mold incidence on single Redglo be berries incubated for 7 days at 25◦C Priortoinoculation, the pedicel was intact torremoved Berries were inoculated by spraying with 1 × 106 conidia/mL of Botrytis cinerea, then immersed in water as control, 0.5% grapefruit seed extract (GSE), 1.0% chitosan, 1.0% chitosan with 0.1% grapefruit seed extract (GSE) or 0.1% thiabendazole (TBZ) or 60 s after 2, 12, 24, or 48 h.