While maximizing the benefits of cover crops requires extending their growing period, prolonging growth and delaying termination beyond the date of soybean emergence is not allowed under federal crop insurance rules. Sam Bennett, Tim Sieren and Jon Bakehouse compared cereal rye biomass, soybean stand counts and soybean yield between strips in which a rye cover crop was terminated near the date of planting soybean (near-plant termination) and strips in which rye termination was delayed until 16 to 52 days after planting (delayed termination).