Fertilizer certification and recertification courses are being offered across the state through Ohio State University Extension.

The certification is aimed at teaching ways to spread fertilizer that minimize the risk that the fertilizer runs off the land with rainwater and into nearby waters, especially Lake Erie, which has been plagued by high levels of algal blooms.

Since Sept. 30, 2017, certification has been required for anyone who applies fertilizer on 50 or more acres of land.

Pre-registration is required. Cost is $35.