Dutch greenhouse seed production aided by technology

World Seed Congress tours greenhouses responsible for developing new tomato, leafy green varieties

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Published: May 29, 2024

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A lettuce breeder for Rijk Zwaan, the world’s largest producer of lettuce seed records data as he makes lettuce variety selections in the company’s research greenhouse in the Netherlands. Photo: John Greig

Glacier FarmMedia’s John Greig is at the World Seed Congress in Rotterdam, the Netherlands. Watch for his coverage in Glacier FarmMedia’s publications.

The Netherlands is known for its greenhouses and its seed production. A tour on the third day of the World Seed Congress concentrated on both of those leadership positions for the country.

At the Syngenta Tomato Vision seed research facility near Amsterdam, the company screens around 800 potential varieties of tomatoes each year, of which two or three will end up as options for growers.

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The company is helping to test a robotic tomato picker made by Pittsburg startup Four Growers. In a row of the research tomatoes, there could be 40 different varieties. Geoffrey Hipps, a technical sales representative for Syngenta, said they are finding that there are differences in the ability of the automated system to harvest some varieties of tomatoes.

Syngenta is known for its specialty tomato varieties, namely the small, sweet, snacking tomatoes growing in popularity. The labour to harvest small tomatoes individually is greater than for large tomatoes so the automated system is finding a place there.

The first commercial system for Four Growers has been installed in a greenhouse in Canada.

The biosecurity is incredibly high at the facility, which meant visitors could not take any cameras into the facility. No video of the vacuum-based robot could be taken.

Tomato brown rugose fruit virus is the largest disease concern for tomatoes and is taking up a significant amount of Syngenta breeders’ time as they work to breed resistance.

Thousands of lettuce plants are screened each year as part of Rijk Zwaan’s genetic improvement program. Photo: John Greig

Cut lettuce a seed development priority

At the Rijk Zwaan seed research greenhouse, south of Rotterdam, the company has 500 varieties of lettuce for sale, and it continues to screen for new varieties all the time.

There is more lettuce being grown in greenhouses, especially in Europe. Spain, which supplies European supermarkets with lettuce in the winter, struggles with a changing climate, said Bauke van Lenteren, a marketing specialist with Rijk Zwaan.

Greenhouse vegetable production is mostly moving to hydroponic production and that’s what is tested at Rijk Zwaan’s large research facility.

The company is also responding to the increased demand for cut lettuce which consumers can pick up in stores and throw directly into a salad. The company has developed a conventional trait that helps lettuce grow more uniform leaves, which the lettuce processors like as it makes the final cut product more uniform.

About the author

John Greig

John Greig

Senior Editor

John Greig is a senior editor with Glacier FarmMedia with responsibility for Technology, Livestock and Ontario. He lives on a farm near Ailsa Craig, Ontario. Contact John at [email protected] or follow him on Twitter @jgreig.

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