Fusarium resistant varieties by Enza Zaden
Two men, crouched in a lettuce field. Looking at the lettuce in the hand of the one man and discussion with each other

Fusarium wilt: A growing threat to lettuce cultivation

At Enza Zaden, we recognize the significant threat that Fusarium wilt poses to lettuce growers worldwide. Caused by the Fusarium pathogen, this soil-borne disease attacks the plant’s roots, leading to severe economic losses in both open-field and covered cultivation. Fusarium wilt can cause 30-70% yield loss—or up to 100% in extreme cases—posing a significant threat to growers by making affected lettuce unmarketable.

Understanding fusarium wilt and its spread

First discovered in 1955 and formally described in 1967 as a novel forma specialis, Fusarium wilt has since evolved into four distinct races:

✅Fol:1

1967

Identified in Japan

✅Fol:2 & Fol:3

2001

Identified in Japan 

✅Fol:4

2016

Identified in Japan

✅Fol:4

2022

Officially denominated

In Europe, race Fol:1 and Fol:4 are particularly concerning. Infections continue to rise, making disease management more crucial than ever.

Discover our Fusarium resistant portfolio

At Enza Zaden, we are committed to providing growers with effective solutions. Since the discovery of Fol:4, we have focused on developing a High Resistance (HR) leafy portfolio to combat its impact on lettuce production. We offer a large Fusarium resistant portfolios with exceptional field performance and remarkable post-harvest. By combining traditional preventive treatments with our resistant varieties, we ensure robust protection against Fusarium, leading to successful crops and guaranteed yield.

Recognizing our Fusarium resistant varieties

Fusarium resistant label Spotting our Fusarium resistant varieties is a breeze! Just look for the Fusarium label you see next to this text.
Additionally, when you visit the lettuce product pages on your local website, you can easily filter on Fusarium resistance.

Resistance makes the difference

Resistant varieties benefit all players in the agricultural supply chain. They help reduce the risk of crop loss by limiting the impact of pests or diseases, ensuring healthier yields for growers. They also offer high-quality produce with a longer shelf life for retailers and provide consumers with healthy, chemical-free food. Susceptible varieties cannot limit or control the growth of specific pests or pathogens, making them more vulnerable to crop damage and disease.

Fusarium spreads through

Severity Fusarium

The severity of Fusarium wilt depends on several factors, including:

✅ Level of inoculum in the soil – High concentrations increase risk.

✅ Air and soil temperature – Warmer conditions encourage pathogen growth.

✅ Variety susceptibility – Some lettuce varieties are more vulnerable than others.

Symptoms Fusarium

Typical symptoms caused by Fol (Fusarium):

✅ Stunted growth 

✅ Leaf wilting

✅ Browning of the vessels of the taproot and stem

Best practices for managing Fusarium wilt

We believe an integrated disease management approach is essential to protecting lettuce crops. Our recommended measures include:

✅ Strict hygiene protocols – Disinfect all agricultural tools and equipment before moving them to new fields.

✅ Crop rotation strategies – Introducing non-host crops like legumes or brassicas to break the disease cycle.

✅ Growing resistant lettuce varieties – Our HR leafy portfolio helps combat Fol:4 and supports sustainable production.

✅ Regular field monitoring and testing – Early detection is key to effective disease management.

✅ Prompt removal of infected plants and soil – Prevent further spread by eliminating infected materials

✅ Long-term solution - Use HR resistance varieties.

Our Fusarium resistant portfolios

Find effective solutions to control Fusarium wilt by exploring our local website as we offer a wide variety of Fusarium resistant varieties across all leafy crop segments.

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