Recent research on grassland problems has made prominent the importance of strain in pasture species, The strains of grasses and clovers sown determine to a very large extent for what purpose the pasture is most suited, what its carrying capacity will be, and also the extent of its useful life, most of the pasture species when studied show some strain difference, and so it is the object of this paper to deal with the strain differences which occur in the Leguminous species which have been studied at the Plant Research Station.
