ideas24 partnered with the Practical Farmers of Iowa (PFI) to better understand the behavioral barriers preventing corn and soybean farmers from adopting cover crops and enrolling in PFI's cover-crop cost-share program. Using what we learned from administrative data, farmer interviews and direct feedback during user-testing, we then jointly designed behaviorally informed communication interventions, which included mailers as well as a farmer referral campaign. To evaluate the potential impact of these light-touch interventions, we ran three randomized controlled trials (RCTs) in partnership with PFI and a large agricultural cooperative and collected data on key outcomes including enrollment, enrollment date, and acres of cover crops planted, along with qualitative data from participating farmers.