Private Fertiziler/Pesticide Recertification Training, Feb 3, 2026. Pesticide only, 1:30-4:30, $35. Fertilizer Only, 12:30-1:30pm, $15. Both Fertilizer & Pesticide, 12:30-4:30, $35. Click here to register at go.osu.edu/pestandfertcert. Click here for event flyer.