Drymatter trials in your region.
Increased drymatter performance
With superior resistance against insects including giving a stronger root system, ryegrass with AR37 is able to produce higher levels of drymatter than the same ryegrass varieties with AR1 or standard endophyte.
On average it has 12% higher drymatter production nationally than the same cultivar with standard endophyte. The increase in drymatter is much higher across the key summer and autumn seasons (when pastures are under the most insect pressure).
Ryegrasses with AR37 show improved persistence, with higher tiller densities over time when compared to the same cultivars with nil endophyte or standard endophyte. With higher persistence the need to renew pasture due to poor pasture composition may be reduced, which is a potential benefit. The resulting higher producing sward also has long-term benefits in assisting the maintenance of excellent animal performance.
The drymatter benefits of ryegrasses with AR37 are higher in areas with greater stress and/or insect pressure - for example trials in Northland showed an average 21% higher drymatter production than the same cultivar with standard endophyte. There have been 11 AgResearch trials completed in New Zealand since 1996, in four regions. The regional averages of 5-21% give a national average of 12%.
Disclaimer
Agricom and Wrightson Seeds products containing AR37 endophyte are supplied subject to terms and conditions of sale.
The trial results referred to are an average from trials held over three years by AgResearch Grasslands in Northland, Waikato/Bay of Plenty, Manawatu and Canterbury regions under which the performance of a ryegrass cultivar with AR37 endophyte was compared with the performance on the same ryegrass cultivar with standard endophyte. All trial regions showed an increase in drymatter from the cultivar with AR37 endophyte, with the range between regions being from a 5% increase to a 21% increase, and with average increase across the regions being 12%.
On-farm results will vary depending on many factors in addition to location.
