Seed forage guide

Seed Forage Guide

For 160 years, we have been working with farmers offering hands-on advice, service and technical information to help meet production goals.

With the very latest scientific research and development, extensive trial data and knowledge available through PGG Wrightson Seeds and Agricom, we have New Zealand’s top performing cultivars available and our team can help you get the best out of them when regrassing this autumn.


PGG Wrightson has a wide portfolio of pasture options available to New Zealand farmers from key suppliers such as PGG Wrightson Seeds and Agricom. This section provides key information and advice to help you make pasture decisions this autumn.

Endophyte is a fungus that occurs naturally in many grass species, including ryegrass. It provides the plant with improved insect tolerance, and in return the plant provides the endophyte with a place to live and reproduce.

Spring Land Production

Endophyte Types

There are several types of endophytes available, understanding which is more suitable for your farm system will help you to maximise productivity.

View types


Types of endophytes

Ryegrass with AR37 endophyte provides the best insect control in ryegrass of all commercially available endophytes, with resistance against Argentine Stem Weevil, Pasture Mealy Bug, Root Aphid, Black Beetle and Porina. AR37 can cause ryegrass staggers.


Ryegrass with AR1 endophyte provides moderate insect control, but is safe for grazing stock. AR1 pastures protect against Argentine Stem Weevil and Pasture Mealy Bug. Care is needed in areas with high Black Beetle numbers (Northern North Island) as AR1 only gives moderate resistance to this pest. AR1 pastures are susceptible to Root Aphid.


MaxP® is a novel tall fescue endophyte that improves the ability of tall fescue pastures to handle pest attack and moisture stress. Unlike ryegrass endophyte, MaxP endophyte produces a loline compound. This compound along with peramine is likely to be a key factor in providing protection against Argentine Stem Weevil, Black Beetle, Pasture Mealy Bug and Root Aphid. MaxP can improve the drought tolerance of tall fescue. In areas where there are few insect pests and little moisture stress, MaxP may not be essential, but may still improve pasture production.


With the introduction of novel endophytes, this endophyte option is now outclassed. Stock grazing these pastures may suffer from ryegrass staggers and reduced animal performance during the warm part of the year. These effects may be reduced by adjusting summer/autumn grazing management.


In areas with cooler summers and good rainfall or irrigation, (Westland, Southland, parts of Otago and some irrigated land in Canterbury), cultivars without endophyte, or with low levels of standard endophyte, can be used. Such pastures are animal safe, and will give very good animal performance. However, ryegrass without endophyte provides little or no protection against common insect pests. 


Thought to provide insect protection similar to Endo5. NEA2 pastures contain low levels of Peramine and Ergovaline and very low levels of Lolitrem B.

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