ryegrass

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Related to Rye-grass: annual ryegrass

ryegrass

highly productive pasture grasses including Wimmera or annual ryegrass (Lolium rigidum), Italian ryegrass (L. multiflorum) and perennial ryegrass (L. perenne).

ryegrass staggers
ruminants and horses grazing pastures dominated by L. perenne (perennial ryegrass) may be affected with a severe incoordination which appears with forced exercise but disappears if the animals are left to their own devices. Caused by tremorgen lolitrems from the endophyte Neotyphodium (Acremonium) lolii which infests the grass.
References in periodicals archive ?
We have seen fields where it is hard to find any rye-grass plants during the winter, but by June rye-grass heads are all too evident.
The practical consequences of the research, says Dr Moss, is that delayed autumn sowing has the potential to greatly reduce rye-grass infestations, provided that all emerged rye-grass plants are effectively destroyed with glyphosate pre-drilling.
Among the most effective pre-and post-emergence herbicides for rye-grass control in winter wheat, Dr Moss highlights prosulfocarb or flufenacet + pendimethalin and pinoxaden or mesosulfuron + iodosulfuron respectively.
Syngenta technical manager, Jason Tatnell, agrees that results underline the need to control rye-grass in autumn.
He said: "The findings that rye-grass germinates mainly in the autumn will come as a surprise to many people but we need to get that message across.
Also, catching rye-grass while it's still small means it's more susceptible to herbicides,'' he added.