Winter star II

Tetraploid annual ryegrass

NZ Bred Logo
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 14 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.

Sowing & Establishment

Winter Star II tetraploid annual ryegrass should be sown alone at a minimum of 22 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.

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.


Benefits of Winter Star II Tetraploid Annual Ryegrass as a Specialist Grass Between Maize Silage Crops

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)
 Winter Star II  1539  2957 3152  7648  $4.88  $146   $1460  $136
 Tama 1382  2397  2972  6751  $3.13  $94  $1324   

The above table is a combination of three winter feed trials sown in autumn 2011, 2012 and 2014. Establishment dry matter production includes March-May, Winter includes June, July and early spring includes August and September. 

Seed was sown bare at a rate of 30 kg/ha. Dry matter is valued at $0.21/kgDM stranding. Cultivar prices are the North Island retail price for bare Winter Star II and Tama seed. Prices exclude GST. 

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

Share this page