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For the past several years, roller-crimping a cereal rye cover crop before a summer vegetable cash crop has been attracting interests as a research topic at the Practical Farmers of Iowa Cooperators’ Meeting. A roller-crimper is a specialized tool designed by the Rodale Institute that, once the cover crop nearly reaches physiological maturity, simultaneously terminates a living cover crop and converts it to a mulch layer. Often a planting implement follows it. Mustard Seed Community Farm does not own a roller-crimper, but wanted to test a different way to terminate a cereal rye cover crop. This experiment compared the effect on summer squash yield of two different ways of terminating a winter rye cover crop.