Grazing and silage swards where the perennial ryegrass content has fallen to 50% to 60% is costing NI dairy farmers over £1,000/ha in terms of reduced grass yield and lost feed value.

Outlining the importance of working with young swards at last week’s reseeding demo organised by Germinal NI, AFBI researcher Dr Debbie McConnell explained that the ryegrass content of a sward will naturally decline.