Butler et al., 2014. Crop Sci., 54 (6): 2846-2853 Document reference Butler, T. J.; Celen, A. E.; Webb, S. L.; Krstic, D.; Interrante, S. M., 2014. Temperature affects the germination of forage legume seeds. Crop Sci., 54 (6): 2846-2853Web https://doi.org/10.2135/cropsci2014.01.0063Citation key Butler et al., 2014Datasheets Bur clover (Medicago polymorpha)