Submitted by Eric Novey, Project Coordinator, Allamakee SWCD
Nick Rolling, who farms near Waterville, recently tried a different farming practice. He band applied herbicide (1 ½ pt Dual and 1 qt Roundup) on corn and soybeans while planting into fall seeded rye cover crop. His goals were to suppress weed growth, capture nitrogen from leeching, reduce soil erosion, increase water infiltration, and to increase his overall soil health by getting as much root growth as possible from the rye. Rolling plans to terminate the rye soon.
Research done through the United Soybean Board has shown when cereal rye grew an extra three weeks prior to soybeans, they produced about 300-400% more biomass with a 100% increase in nitrogen retention, compared to early terminated cover crops, with no yield reduction.