• In Memoriam Peter Koppert

  June 21, 2023

  Peter as a visionary and a warm personality. Peter showed that a company is also about interpersonal connections and about making a positive impact on the world [...] strength and support in the beautiful memories they have of him. If you would like to express your support and condolences, you can leave a message in the condolence [...] lose our dedicated founder, a loving husband, father, father-in-law, grandfather, and brother. His death leaves a deep void in our hearts. Peter fulfilled

• Two-spotted spider mite control in hardy nursery stock grown in polytunnels

  July 20, 2021

  Due to the greater variation in environmental conditions in HNS growing in polytunnels, there is also a potential role for cultural control measures and [...] pest and beneficial biology, and supported by a sound pest monitoring system. For more information on how to implement a successful biological control programme [...] been a concurrent increase in integrated crop management (ICM) programme complexity. The production of a diverse range of plants often leads to a much

• Maximize pollination in tomato

  maximize your tomato harvest. Need our tips for hive placement? Download our poster here. Checklist for pollination in tomato Tips for tomato pollination Buzz [...] Bumblebees play a vital role in achieving optimal pollination results for tomato crops. If you are seeking to optimize your crop's pollination process [...] single visit by a bumblebee is typically sufficient for successful pollination. Fruit setting occurs once a flower has been adequately pollinated. Pollination

• Licence permits release of Koppert Swirski Mite® in polytunnels in England

  January 6, 2021

  of a new release licence for Swirski Mite®, issued by DEFRA in November 2020. Until now, Swirski Mite® has been licensed in England for use only in glasshouses [...] Mite® in polythene tunnels in England Koppert can announce the launch of a suite of products aimed at improving the robustness of IPM programmes in strawberry [...] species that pose a risk to UK tunnel crops every year. It can also provide a good defence against whitefly , a pest which has been increasing in tunnel strawberry

• A life-long commitment to help growers thrive with sustainable growing practice

  December 10, 2024

  poison on the food we eat and the flowers in our homes?" Rianne asks with a frown. For over two decades, she has passionately supported growers in transitioning [...] continue this mission for the rest of her life. Growing up in a farming family, Rianne's father was a pioneer in using biological solutions for his crops. He also [...] biological solutions work required a shift from a curative mindset to a preventive approach — aiming at a natural balance in their crops and how to maintain

• Predatory mite pioneers: A journey of biocontrol innovations

  September 30, 2024

  invested in facilities for mass production, resulting in an effective and viable solution. Those breakthroughs in turn have served as a launch pad for new solutions [...] if we were to search for a new natural enemy for each new challenge. That speed can mean the difference between a successful and a disastrous growing season [...] In the vibrant world of horticulture, Koppert stands out for its commitment to innovation. By combining a deep respect for nature and understanding of

• A legacy of sustainability: Stolk Brothers and Koppert’s shared vision

  February 17, 2025

  started nearly a century ago. The Stolk Brothers’ journey in horticulture began in 1925 when Pieter Stolk’s great-grandfather purchased land in Bergschenhoek [...] current specialty: anthuriums. For Pieter Stolk, the transition to biological crop protection was both a necessity and a calling. “In the early 90s, my father [...] but we need full commitment—not just from growers, but also from policymakers in The Hague and Brussels. We need clear regulations and support, not shifting

• How to protect bumblebees in cold

  persist, the greater the impact on the bumblebees and their performance. Right climate for bumblebee pollination in greenhouses In tunnels or greenhouses, the [...] such conditions to avoid damage Keep in mind that the impact of climate on pollination and colony quality is also time-sensitive. The longer unfavorable [...] catch the morning sun. Make sure the hive is in a sheltered environment. Sunlight exposure Position the hives on the side that receives the most sun during

• Optimising disease biocontrol in propagation

  April 26, 2021

  often be avoided. A hygiene programme is a significant part of the disease control strategy. The use of peroxyacetic acid, e.g. Jet 5, at a 1% v/v dilution [...] Trichoderma harzianum (strain T22). A second application of Vidi Parva and Trianum-P should be applied 10-14 days later. In 2020, a development study demonstrated [...] constitutes a ‘ weaken and kill’ strategy, where the fungicide weakens the target, and T. harzianum completes the killing process . For further details on the

• Trianum effectively controls Pythium in cucumber

  sorts of conditions have a bigger impact on the beneficials than on the thrips, which means I need to be alert. The same goes for caterpillars , since there’s [...] grams of Trianium-G on each mat before putting out the new plants in ‘duo’ pots (two plants in one rockwool cube). He decided to do this in response to his [...] Wubben, Kees Hendriks runs a farm covering over six hectares along Hoefslag road in the Dutch village of Pijnacker. Built in 2011, the farm has two sections