These ratings are indicative and may vary slightly between cultivars. If Argentine stem weevil or black beetle are present at sowing, an appropriate seed treatment is recommended, to improve insect resistance during establishment. The ratings in this table are based in part on glasshouse studies where test plants are 100% infected with endophyte, whereas commercial seed must meet minimum standards of 70% of seeds infected. These tables were compiled by AgResearch, Agricom, Agriseeds, Grasslanz and PGG Wrightson Seeds.
Endophyte insect control for diploid, perennial and long rotation ryegrasses
Endophyte insect control for tetraploid perennial and long rotation ryegrasses