Hot heating research tulip to control tulip gall mite

An alternative method to control tulip gall mite and secure the future of tulip cultivation


The authorisation for the active substance spirotetramat will expire in 2025. The manufacturer has indicated that it will not start a procedure for renewal due to strict authorisation requirements. This poses a major problem for the tulip sector. Spirotetramat, normally applied through Movento, is used twice after heading to prevent tulip gall mite during storage. It is an effective agent with up- and downward systemic action that protects the bulb until after harvesting. The removal of this treatment will make the spread of tulip gall mite uncontrollable, with serious consequences for tulip cultivation. Moreover, gall mite is a major disseminator of the TVX virus, further compounding the problem.

Alternatives and challenges

Chemical control with Vertimec and/or Apollo, by dipping, increases the risk of Fusarium infestation and may eventually disappear. CATT treatment and ULO treatment are effective against tulip gall mites, but difficult to implement at farm scale because of required modifications to cells and equipment. The use of predatory mites is being investigated but is not yet ready for farm-scale implementation.

The solution: hot heating

We believe that hot heating can be the solution. Bulb growers are often already familiar with this method and have the necessary equipment, making it relatively easy to apply on their own farms.

Aim of the research project

The aim of this research project is to develop an alternative, sustainable method to control tulip gall mite.Hot-firing is considered a possible suitable control method. We will investigate whether this method can sufficiently control tulip gall mite while ensuring quality, yield and tracellation of tulip bulbs.

Future perspective

If the hot heating method indeed proves suitable to control tulip gall mite while maintaining quality and yield, it could secure the future of tulip cultivation. With the elimination of Movento/Batavia in 2025, the continuity of tulip cultivation is at stake. Moreover, it eliminates the need for plant protection products, reducing the risk of future problems due to loss of approvals. This project focuses on a sustainable control method with a lasting solution for the future.


Project duration is from July 2022 to August 2025

Related Sustainable Development Goals

SDG 6 en 12 | alternative to chemical crop protection

icon of UN Sustainable Development Goal 12: 12. Responsible Consumption and Production12. Responsible Consumption and Production

These companies have sponsored this project

Royal Anthos logoStichting Bloembollenonderzoek logoBrancheorganisatie Sierteelt logo


These companies have sponsored this project

Wageningen University & Research logo

Wageningen University & Research

In 2021 zijn we gestart met een onderzoek in samenwerking met 8 tulpentelers. We onderzoeken momenteel het effect van een derde jaar heetstoken op dezelfde partijen tulpen. Daarnaast is er vorig jaar een heetstookonderzoek gestart in samenwerking met de WUR, als onderdeel van de Verbindend Verklaring van Stichting Bloembollenonderzoek. Delphy onderzoekt de effecten van verschillende temperatuur- en duurbehandelingen op tulp, terwijl de WUR dezelfde behandelingen uitvoert op gekweekte tulpengalmijten in het modelgewas knoflook. De resultaten van deze studies worden samengebracht om een effectief heetstookrecept te ontwikkelen voor het doden van tulpengalmijten, dat tevens geschikt is voor gebruik in de tulpenteelt.