If you or someone you know may be experiencing a mental health crisis, contact the 988 Suicide & Crisis Lifeline by dialing “988,” or the Crisis Text Line by texting “HOME” to 741741. GRINNELL, Iowa — The farmers’ co-op here is a center of hope every spring. It’s where farmers buy seed and fertilizer for the summer’s crops, and where they seek tips to maximize their harvest of corn and soybeans. But on a recent morning, a dozen mental health professionals gathered at the Key Cooperative Agronomy Center to discuss why so many farmers quietly struggle with untreated anxiety and depression. Studi…