The present invention relates to a combination of a Neotyphodium species
endophyte or endophyte culture in a symbiotic association with a host
grass which association does not cause symptoms of toxicosis in animals
through exclusion of ergovaline but, due to the inclusion of alkaloids
including agroclavine, setoclavine or isosetoclavine, retains the ability
to resist abiotic stresses and protect the grass from pests.