Winter Star II

Tetraploid annual ryegrass

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Winter Star II Tetraploid  Annual Ryegrass
  • Ideal between maize crops
  • Autumn sow for high yields of quality autumn, winter and spring feed
  • Use for quick, early feed, suitable for silage and grazing
  • Fast establishment, making it ideal for undersowing into existing pasture
  • Improved spring production and quality

Farm Type
  • Sowing Rate 25 kg/ha
  • Heading Date Late - 9 days later than Nui
  • Tetraploid/Diploid Tetraploid
Winter Star® II tetraploid annual ryegrass is suitable for quick winter feed with improved spring quality making it ideal for silage and hay production. Winter Star II tetraploid annual ryegrass is high yielding with fast establishment giving excellent autumn growth. As a tetraploid, Winter Star II tetraploid annual ryegrass has excellent feed quality and rapid establishment.
Cultivar Establishment (kgDM/ha)  Winter (kgDM/ha)  Early Spring (kgDM/ha)  Total (kgDM/ha)  Cultivar price ($/kg)  Seed cost/ha ($/ha) Profit ($/ha)  Profit over Tama ($/ha) 
Winterstar II  1539 2957  3152  7648  $4.88  $146  $1460  $136 
Tama   1382 2397  2972  6751  $3.13  $94  $1324   

Sowing & Establishment

Winter Star II tetraploid annual ryegrass should be sown alone at a minimum of 25 kg/ha, using higher rates for more winter feed, or at a minimum of 14 kg/ha using Superstrike treated seed in an undersowing situation.


  • Pasture Life 6 mths - 2 years

Grazing Management

It is recommended that a rotational grazing system be used when feeding Winter Star II tetraploid annual ryegrass, to allow improved regrowth following grazing.
  • Grazing Method Rotational Grazed – Short Term
Roy Willan
“Winter Star II on the milking platform has given us options to make more silage that is better quality than previous years. It keeps growing well into August and September and maintains its quality, enabling us to turn low producing paddocks into high performing paddocks within 12 months. The extra production has certainly paid for the cost of the seed.”
Roy and Lisa Willan, Waikato

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