Successful Discovery Field Days at Twisk

Intermediate Resistance (IR) Nasonovia Nr:1 takes centre stage

The annual Discovery Field Days hosted by Enza Zaden in Twisk revolved around one central theme, Resistance makes the difference, in the specific: Intermediate Resistance (IR) Nasonovia Nr:1. Over the course of three energetic days, growers, partners, and colleagues from both the Netherlands and abroad came together to explore the latest developments in the leafy segment, with special attention given to combating the rapidly spreading Nasonovia aphid in iceberg lettuce.

Launch of four new iceberg lettuce varieties with IR Nasonovia Nr:1

The highlight of the event was the introduction of four new iceberg lettuce varieties which offer a full protection package, featuring the innovative IR Nasonovia Nr:1 resistance, full Bremia resistance (BL:29-41) and HR Nr:0. The Nasonovia Nr:1 aphid presents a significant challenge for growers across Europe. As this pest continues to cause serious issues in multiple regions, the urgency for effective and reliable solutions is growing rapidly. Together with other aphid control tools, Enza Zaden’ Intermediate resistance to Nr:1 is another valuable solution in the fight against Nasonovia.

Paul Huijs, Product Manager Leafy at Enza Zaden, explains:
“The new varieties are comparable to our existing and well-performing variety Eduardo. The trials we conducted over the past year are very promising. The new varieties will be available for cultivation by mid-2026.”

Nasonovia Conference: In-depth and practical knowledge sharing

On Thursday afternoon, the Nasonovia Conference welcomed over 60 professional growers. During this session, all relevant insights about the Nasonovia aphid Nr:1 were discussed, and the
performance of our IR-resistant varieties was shared. Together with our Enza Zaden’s experts, attendees visited the demo field, and the day concluded with an informal networking reception featuring drinks and tasty bites.

A Successful Event with International Impact

We look back on a highly successful edition of the Discovery Field Days. We thank all attendees for their engagement and look forward to fruitful collaborations in the upcoming season

For more information on Nasonovia please visit: Nasonovia Resistance. You can also contact your local Enza Zaden representative or Brit Fopma – Marketing Generalist at Enza Zaden, via b.fopma@enzazaden.nl.