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NWF Weekly Grass Watch – 29th July 2022

Grass Growth

This week average grass growth across GB has fallen to 28.1kg DM/ha/day, however a considerable range was seen from a 46kg DM/ha/day average in Scotland and 16kg DM/ha/day average in the East Midlands and Southeast. With continued dry weather forecast for most over the coming week, grass growth rates are likely to decline further where rain fall is limited.

Milk Yield from Grazing (MYFG)

The average MYFG for GB this week has improved on last week’s figure to M+4.7litres/day, thanks to a 1.6kg increase in potential DMI and an estimated ME figure that has remained fairly constant. Limited MYFG samples were received from all regions this week., meaning data could not be reported as an accurate representation of the regions.

Reduced grass growth management considerations

  • With dry conditions and limited rainfall expected, once again, grazing deficits may continue to be an issue as grass growth rates continue to decline in most regions. The dry matter of grass this week has increased, and a lack of moisture will supress grass growth and root development.
  • The direct impact of this is stunted growth and the drying out of pastures which, if not carefully managed, can increase the risk of overgrazing.
  • Top tips of grazing management:
  • Monitor sward heights to ensure target entry and residual covers are achieved
    • Manage rotation lengths and paddocks within a rotation
    • Ensure stocking densities are accurate.

Source:  Trouw Nutrition

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