The tolerance of foxtail millet (Setaria Italica (L.) P. Beauv.) to combinations of fluroxypyr, clopyralid, and MCPA

Abstract

Foxtail millet (Setaria italica (L.) P. Beauv., golden German millet, Italian millet) use as a fodder in Saskatchewan is currently increasing especially for swath grazing. Using Foxtail millet in swath grazing can extend the grazing season and reduce the cost of feeding cattle in the winter (McCaughey, et al. 2002; May et al. 2007). For this practice to be successful inexpensive weed control measures are needed. Foxtail millet’s growth in the spring can be slow under cool conditions, allowing broadleaf weeds to get established and reduce the biomass of the foxtail millet. Currently, only bromoxynil and bentazone (Basagran Forté) are registered for use in Saskatchewan. The weed sprectrum of bromoxynil does not control several weeds including Canada thistle (Cirsium arvense (L.) Scop.) and cleavers (Galium aparine L.). Bentazone is expensive and requires larger water volumes than growers are willing to use. Therefore, improved control options for foxtail millet are required.