An increasing number of tree nurseries are using beneficial insects as an alternative to chemical crop protection. Interest in biological crop protection is growing rapidly, especially now that chemical approvals are being withdrawn, retail and export requirements are rising, and legal pressures are increasing. “We’ve reached a tipping point,” says Hans van de Pas, Key Account Manager at Bioline AgroSciences. “Biological control is no longer just for the pioneers.”

Widely applicable

Bioline AgroSciences has been active in biological crop protection since 1979. Originally founded in Colchester, England, the company now operates production sites and offices around the world, delivering beneficial insects for the control of pest insects, including those in the tree nursery sector. In the Netherlands, Bioline collaborates with a network of specialized distributors such as Telermaat, Vitelia Agrocultuur, Vos Capelle, Klep, Van Iperen, Benfried, Alliance, Eveleens, and Brinkman.

According to Van de Pas, biological control is technically very feasible in tree nurseries: “It works well in many crops, even outdoors and on larger plots. Especially when applied preventively and with a clear strategy, such as following the principles of IPM (Integrated Pest Management).”

Natural enemies on jute twine 

What sets Bioline apart from other suppliers is its continuous focus on innovation in application methods. For example, chrysoperla eggs (green lacewing) are often used in nurseries to combat aphids. Bioline offers these eggs on jute twine, which can be hung between plant rows. “A sustainable solution that works well in the field,” Van de Pas explains. “No plastic, no waste. And the larvae hatch gradually, ensuring longer-lasting control.” Bioline is also innovating in packaging and logistics: “We use recycled cardboard and minimize plastic use. That aligns with the sustainability goals of both growers and buyers.”

More than just products

Van de Pas emphasizes that successful biological control requires customization and knowledge. “You always need advice on which beneficial species to use and when, how to release them, and how to optimize the growing environment. That’s why we work closely with our distributors, who support growers directly.” Soil and plant health also play a role: “A strong, resilient plant is less attractive to pest insects. Biological control is most effective when combined with good cultivation practices.”

First time at GrootGroenPlus 

This year, Bioline AgroSciences will be present at GrootGroenPlus for the first time. “We’re seeing increasing interest from the tree nursery sector and want to raise awareness about our products and knowledge,” says Van de Pas. “This is an important market for us with strong future potential. We firmly believe in the power of natural solutions, even in open-field production.”