The rise to dominance over two decades of Lupinus polyphyllus among pasture mixtures in tussock grassland trials

Abstract

Abstract In two trials near Lake Tekapo, one started from sown binary mixtures of 14 different legumes, of which Lupinus polyphyllus was one, was cross sown with 16 different grasses, while in the other trial L. polyphyllus and Trifolium hybridum were over-drilled across established swards of previous 25 different grass and legume species. In both L. polyphyllus persisted, increased and spread by seeding in the presence of repeated mob grazing by sheep to become the dominant species over two decades. Keywords: New Zealand, rangeland pasture development, Lupinus polyphyllus, Bromus inermis.