As thousands of farmers prepare to renew their pastures this autumn, they face many important decisions.

 

But one decision about pasture renewal has been made easier.

 

For the best balance of animal health and insect control, we believe there is only one family of ryegrass endophytes at the top of the list.

 

With zero risk of ryegrass staggers in dairy cows, and very low risk of staggers in sheep or deer, NEA endophytes safeguard stock and deter New Zealand’s most costly pasture pests.

 

After 30 years of research, and over 1 million hectares of commercial plantings, pastures with NEA endophytes are the obvious choice for anyone who values animal welfare and performance.

 

Unlike some other endophytes, NEA endophytes look after stock. They have excellent animal performance They’re also effective against pests like Argentine stem weevil, black beetle and root aphid.

 

The science behind NEA endophytes tells a consistent and compelling story.

 

Between 1999 and 2018, 21 separate animal safety trials have been conducted, each lasting eight weeks at the height of summer, when the adverse health effects of some endophytes, such as ryegrass staggers and ill-thrift, are most likely to manifest.

 

Stock weights, growth rates and health are frequently assessed in these intensive, replicated trials.

 

Similarly we have also run many dozens of field trials throughout NZ as well as 18 separate insect bioassays to measure insect protection and pasture persistence.

 

Many people are surprised when they realise just how much testing has been done on NEA endophytes over the past 20 years.  

 

Endophyte science and research is hugely important because of the sustainable, environmentally friendly solutions it provides for the NZ farming industry as a whole.

 

Endophytes are a naturally adapted insect control mechanism, reducing the need for pesticides.

 

Our aim has always been to get the best out of endophyte in terms of animal health, while maintaining strong control across a range of insect pests. This is a balancing act, which we believe we have successfully achieved.

 

By comparing how different endophytes stack up in each of these categories, it’s easy to work out which ones allow farmers to do best by their livestock at the same time as protecting their pastures.

 

AR1 endophyte, for example, has very good animal performance and health. But it is weak against black beetle and root aphid.

 

Overall AR37 endophyte has very good control of key pests. However, the chemicals it produces are not always animal friendly. It is not suitable for deer or horses, and can cause severe staggers in sheep and lambs.

 

We believe NEA endophytes provide the solution that bridges this gap. They have an outstanding animal safety record, and good control of key pests to support pasture persistence.

 

NEA2 endophyte is available in Trojan and Rohan perennial ryegrasses. NEA comes in Shogun hybrid ryegrass, and our newest endophyte, NEA4, comes in Viscount tetraploid ryegrass.