Walsh et al., 2013. Crop Sci., 53 (2): 674-678 Document reference Walsh, M. J.; Groose, R. W.; Obour, A. K.; Claypool, D. A.; Delaney, R. H.; Krall, J. M., 2013. Seed persistence in soil of five medic cultivars in Southeastern Wyoming. Crop Sci., 53 (2): 674-678Web https://doi.org/10.2135/cropsci2012.06.0357Citation key Walsh et al., 2013Datasheets Bur clover (Medicago polymorpha)