Amaranth is an ancient crop originating in the Americas that can be used as a high-protein grain (12-17%) or as a leafy vegetable, and has potential as a forage crop (Putnam et al., 1989). Grain amaranth species have been important in different parts of the world and at different times for several thousand years (Meyers & Putnam, 1988). At the end of December 2009 the presence of discoloured panicles and seeds of amaranth (Amaranthus caudatus ssp. mantegazzianus) was recorded at the Instituto Fitotécnico of Santa Catalina, Llavallol locality, Buenos Aires Province, Argentina.Facultad de Ciencias Agrarias y Forestale
