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Iowa Soybean Research Center

in collaboration with the Iowa Soybean Association

Termination Timing of Cereal Rye Cover Crop for Improved Weed Control in Soybean

Current cooler weather conditions are posing challenges for growers with a cereal rye cover crop to get it terminated. However, for growers planning to plant soybeans into the rye cover crop, there may be a perk to letting the rye cover crop accumulate more biomass. That perk being the cover crop biomass can help with weed suppression. The ability of cereal rye to suppress weeds is directly related to the biomass accumulation at the time of termination.