Jared Goplen, Extension educator - crops, and Craig Sheaffer, Professor, Department of Agronomy and Plant Genetics Overview A recently harvested alfalfa plant will become dormant if subject to drought and high temperatures. It will survive several months of dormancy and resume regrowth when moisture conditions are favorable. Photo: C.C Sheaffer. High temperatures combined with drought have affected establishment and growth of alfalfa. The extent of drought conditions are shown on the U.S drought monitor . Alfalfa seed that has been planted and not yet germinated will survive in the soil during drought and can germinate when rainfall occurs. Newly established seedlings are very susceptible to drought because their root systems are inadequate. Drought and high temperatures will not kill established alfalfa but will cause it to go dormant. Dormant alfalfa will recover following rainfall or irrigation. Alfalfa stands that are drought stressed but ready for harvest should be ...
