• Trianum-P as a cornerstone in the fight against Stemphylium

  March 26, 2026

  sees the value of Trianum-P primarily in the soil phase: “It’s about competition in the soil. By using Trianum-P, you reduce the pressure from the ground [...] observed an explosive resurgence of the disease over the past two years, particularly last year in the southwest of the Netherlands. However, increases have [...] outbreak in 2013. In the years that followed, the pressure gradually subsided again. But in recent years, the infestation has been on the rise again, with

• Natupol bumblebees - keeping cool and working hard in the heat!

  August 29, 2016

  .’ The Natupol hive is designed in such a way that the bumblebees are able to influence the microclimate in the hive. The hive itself protects the colony [...] temperatures, the best practice is to help the colonies to keep cool during the hottest times of the day and allow them to pollinate in the early morning [...] crops. The final programme in the series in October will be about the very latest Natupol innovations. Bumblebee behaviour These strategies are based on

• Getting a head start - The importance of scouting in winter

  January 7, 2025

  under cool and wet conditions during the winter months. The symptoms are apparent in winter and early spring. Early symptoms are yellowing and browning of [...] brown patches across the field at the end of the winter. Many insects can also potentially threaten seedlings and small crops during the winter and early growing [...] clip plants at the soil surface; some insects may be nocturnal and burrow into the soil during the day, making it difficult to identify the culprit. Leaf-feeding

• A good fruit set is the start of a good production!

  March 31, 2020

  supports the fruit set of the plant. Veni Calcium supplies the plant with readily available calcium that is needed for the cell wall formation during the cell [...] quality and healthy yield. The flower buds, formed in fall, are swelling and ready to open. During the short flowering period the crop experiences a tremendous [...] nut development. When the flowers are opening, active pollination is needed. Most fruits get the best pollination when the flowers are freshly opening and

• Forever Plants: getting closer to the best environment for plants

  April 30, 2020

  Forever Plants, the four-hectare potted plant farm of the Persoon families in the west of the Netherlands. Around the year 2000, the farm joined the ‘Telen met [...] cooperates. ‘All the links must begin to feel the urgency.’ That the end product is made by the entire chain makes perfect sense to Mart van Holsteijn. If your [...] chemicals on, as pests take over the entire plant. While chemicals could only reach the top of the plant, natural enemies search the whole plant for pests and

• In search of the relationship between NatuGro and nitrogen release

  June 27, 2019

  NatuGro? And what level of nitrogen makes the plants more attractive to aphids , for example, and what is the precise reason for this? What are the limits and [...] and what are the target values? These are the questions to which we want to find answers.’ Standard treatment with NatuGro In the study, being carried [...] explains: ‘The strawberries are treated with Trianum at the start of the cultivation cycle and after every subsequent eight-week period. They are also treated

• Natutec Drive – On the road to precision biological control

  March 10, 2021

  popular in the UK 'Currently we are preparing for the spring season with the production of 20 Natutec Drive machines for key customers in the UK - mainly [...] with success by growers in the UK, Ireland and the Netherlands. Demo trials are currently being set up in Germany, France and the US. Koppert Biological Systems [...] applications. And demo trials are underway in France, US, Germany and Spain' Tom Vroegop explains. 'We are continuously assessing the performance of Natutec Drive

• How a little predatory mite laid the foundation for biocontrol today

  June 11, 2024

  location to start Operating from the largest vegetable and flower cultivation area in the Netherlands, the Westland offered the company a ready market – almost [...] exploration took him to research stations in the UK and eventually Switzerland where he found what he was looking for - the predatory mite Phytoseiulus persimilis [...] after repeated introductions of the predatory mite, my father began to show some success. Jan Koppert led the way ‘The company was set up by my father

• Earth Day 2022: Koppert’s ongoing investment in the planet

  April 22, 2022

  and agriculture. It is the only responsible way in which to pass on the earth to future generations. We are an active partner of the United Nations’ Sust [...] at Koppert for the past 55 years. Established in 1970, Earth Day is an international day devoted to the planet. It draws attention to the environment, and [...] An increasing number of electric cars are now in use. 75% of the fuel used for transportation of our products by the Dutch fleet is bio diesel HVO30. This

• Promising talent in the vegetable sector invited for Master Course

  November 21, 2018

  organised a similar course for the floriculture sector.The international master courses are aimed at promising managers between the ages of 25 and 40 with a [...] future-proof production company. During their stay in the Netherlands, these young managers will visit top companies in the Dutch horticultural sector. From [...] 27 January to 9 February, the Pro Manager Master Course Vegetables will concentrate on the international vegetable sector. The top 20 candidates to apply