News

Coco substrate: a sustainable choice

“The future of sustainably produced coco substrate has received a new boost thanks to current economic developments", says Jelte Veenstra, director Coco Substrates at Van der Knaap Group. In recent years, Van der Knaap has experienced a growing...
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The next step in emission-free cultivation

After years of development, Van der Knaap Group is launching its sodium remover. ‘Natrex®‘ selectively extracts the sodium that is present in the drain water, allowing for the drain water to continue to be recycled without losing the crop...
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Out now: the latest Grow-How!

The latest edition of our newsletter Grow-How! is now available to read on our website. This newsletter features articles on the benefits of an active soil life for your crop. Tests show that soil life develops faster in coco substrate than...
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Lentiz MBO Westland conducts research into circular greenhouse horticulture

During the previous school year, Lentiz MBO-Westland collaborated with a group of companies, including Van der Knaap Group and Learning Community Greenport Horti Campus, to successfully develop a circular tomato cultivation system. In September 2021,...
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Sustainable chrysanthemum cultivation at Dümmen Orange

Cut flower cultivation in the soil presents a number of challenges. Plant health, water and environmental aspects, energy consumption and optimising cultivation are just a few examples. Sustainability is possible by using new innovations. Van der Knaap...
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Delphy and Van der Knaap join forces

Van der Knaap has joined Delphy Innovative Soft Fruit Center (IFSC) in Horst (NL) as innovation partner. This research centre is a unique acquisition for the soft fruit sector. For Van der Knaap it is a special opportunity to cooperate with a party that...
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Renewable raw material: ‘Fibrecompost’

The search for suitable, renewable raw materials and substrates is becoming increasingly important in professional horticulture. Raw materials such as coco peat, bark , compost and wood fibre from renewable sources are increasingly being used. Van der...
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Organic cultivation of sweet pointed peppers in soil (pt 4)

Research was conducted in our innovation centre 'de Kas' into the applicability of organic calcium nitrate (Ca(NO3)2) in the organic cultivation of pointed peppers. During this trial, cultivation was carried out according to the usual organic...
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Innovative production methods at location Dominican Republic

Due to changing circumstances in the production and shipping of coco substrates, we have paid a lot of attention last year to one of Van der Knaap Group's own production locations: Growrite Substrates in the Dominican Republic. This included looking...
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Research in innovation centre ‘de Kas’

In Van der Knaap’s own innovation centre ‘de Kas’ in Honselersdijk, the expert R&PD team has an extensive laboratory, twelve separate cultivation greenhouses and an outdoor field at its disposal. Various growing conditions can be...
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