Category: Knowledge
Date published: July 24, 2022

Keeping thrips under control: plenty of options!

Thrips can cause severe problems for growers in many crops. Combating this pest is, therefore, an important focal point in the field of biological control. Koppert has developed a whole range of products to help you tackle thrips. You don't have to go into battle alone! 

When tackling a pest such as thrips, it is vital to work systematically. While a whole range of products is available to control thrips, not all products can be used together without causing other issues. For example, the simultaneous use of different species of predatory mites is not a good idea. Also, if chemicals are necessary, be sure to tailor them to the biological control methods you are using. If you don't, you risk disrupting the natural balance within the crop.

A choice of predatory mites

In ornamental crops, predatory mites are the foot soldiers in the battle against thrips. You can choose from two commonly-used species: Swirskii and Cucumeris. The predatory mite that would be most effective within your business depends on various factors: the crop, the climate, previous experiences, your preference, and statutory requirements. 

A third predatory mite option is Limonicus. This mite deals with both whitefly and thrips. Other beneficial predatory mites include Stratiolaelaps scimitus.

For fruiting vegetables such as sweet peppers and aubergines, the preventative introduction of the predatory bug Orius is an important basis in the fight against thrips. But beware: this predatory bug is very sensitive to chemicals. 

Pupae require a particular approach

The additional problem is that the thrips pupae are often in the ground and challenging to tackle. However, certain beneficials are perfect for the job. For example, there are parasitic nematodes such as Steinernema feltiae. Or a product like Isarid; when the spores of the fungus Isaria fumosoroseus come into contact with the insect. They attach to the body and begin to grow almost immediately. 

Lastly, sticky traps and Rollertraps are important tools in ascertaining whether thrips are present, and – in the case of the Rollertraps – also to capturing and removing as many flying specimens as possible. First, of course, you have to ensure that the thrips can find the sticky traps and Rollertraps. Using an attractant is the perfect aid in this regard.

Further information

Want to learn more about the options for controlling thrips in your crop? Don't hesitate to get in touch with your Koppert consultant!