The effect of glyphosate, paraquat and paclobutrazol on lolitrem B levels in endophyte-infected perennial ryegrass

Authors: Prestidge RA, Sprosen JM
Publication: New Zealand Veterinary Journal, Volume 43, Issue 4, pp 138-140, Aug 1995
Publisher: Taylor and Francis

Animal type: Livestock
Subject Terms: Fungal/yeast, Agricultural compounds, Locomotor, Mycotoxicosis, Nervous system/neurology, Nutrition/metabolism, Pasture/crop, Poisoning - plant, Disease/defect, Toxicology
Article class: Scientific Article

---

Abstract: Two herbicides (glyphosate and paraquat) and a plant growth regulator (paclobutrazol) were applied to endophyteinfected (Acremonium lolii) perennial ryegrass swards. Subsamples of these swards were then chemically analysed at intervals up to 28 days later for lolitrem B, the compound responsible for perennial ryegrass staggers in domestic livestock. Glyphosate and paclobutrazol had no effect on lolitrem B concentrations. Paraquat applications decreased lolitrem B concentrations in the herbage. Because none of the chemicals tested increased the concentration of lolitrem B in the herbage, they are unlikely to be directly implicated in perennial ryegrass staggers in grazing animals.

---