On-Farm Soybean Row Spacing Trials

Jim Fawcett, Iowa State University
Josh Sievers, Iowa State University
Lyle Rossiter, Iowa State University
Jim Rogers, Iowa State University


Most past research has shown a yield benefit to planting soybeans in rows more narrow than 30-in. However, narrow rows occasionally can result in more soybean disease problems, such as white mold, which can result in higher yields with wider rows. Yield differences between wide and narrow rows often vary from year-to-year and fieldto-field.