 And an Iowa nonprofit group helps ag-related businesses grow to serve more farmers and get more cover crops planted in the state. Cover crops like rye and wheat are typically planted to protect the soil in winter months and in between row crops like corn and soybeans to control weeds in the growing season. Practical Farmers of Iowa is making up to $10,000 available to farmers who want to commercialize their cover crop practice through their Cover Crop Business Accelerator program.