Benefits of reseeding – reaching your forage potential

Reseeding an existing ley can lead to a significant return on investment. Within several years ‘weed grasses’ will ingress into a sward – particularly if the field has experienced poaching or after a hard winter. These ‘weed grasses’ have poor quality characteristics compared to ryegrass varieties from the Recommended List. These include poor digestibility and a poorer response to fertiliser, as well as not converting to meat and milk as efficiently as ryegrass.

Benefits of Reseeding

  • Improved yields
  • Higher DM intakes
  • Enhanced disease resistance
  • Earlier turnout of stock
  • Increased stocking rate
  • Increased palatability and digestibility
  • Improved grazing and silage quality
  • Higher response to nitrogen (N) fertiliser

With the increase in volatility of fertiliser prices, it is important that a grassland nutrient programme is cost-effective. It is essential that the sward comprises of grass species which respond to fertiliser to maximise on-farm profitability.

The graph below clearly shows the variance between perennials’ efficiency and the efficiency of common weed grasses when nitrogen fertiliser is applied.

These losses in response occur when N is increased from 50-150 units/ac.

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