Quarantined trial reports

To ensure our results remain robust, relevant and of the highest quality, it’s standard practice to remove trials that have been compromised by events that affect the accuracy of the data.

The purpose of NVT is to test variety performance (or genetics) across environments.

When uncontrolled events occur that are not uniform in their impact, the data is skewed and is no longer representative of varietal performance. In these scenarios the results are removed from the NVT dataset  to avoid skewing the overall NVT results.

However, the results are reported in the quarantined trial reports to ensure the information is still available to the public.

Types of events that skew genetic effects can include:

  • frost (occurs at different stages of variety maturity causing non-uniform impact skewing results)
  • crop damage (spray drift, animal damage, hail, wind blasting)
  • soil effects (waterlogging, poor site selection resulting in inconsistent ripening within plots).

Trials with a poor analysis results (high p-value or CV% resulting in unrepeatable trial results i.e.) should not be used to make variety selection decisions.

These events are random, uncontrollable, unpredictable and extremely variable in both timing and severity of the damage caused.

View our quarantined trial reports.


Data presented within these reports have been made available to provide growers with a transparent account of the fate of unreleased but not abandoned NVT trials.

The data is of no value for the purposes of head-to-head variety comparison and will not form part of the trial data for our website, database and app reporting systems. It should not be used for any variety selection decisions.

Replication of this data is strictly prohibited and it MUST NOT be used by ANY parties for producing variety brochures, marketing material, sowing guides, grower notes or ANY OTHER publication or communication activities.