News

Growing cucumbers with circular fertiliser

In recent years, the Research & Development department of the Van der Knaap Group has been doing research into circular fertilisers. This has resulted in the development of a bio-reactor that produces an organic nutrient solution. Input for this...
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Makeover reception area 'de Kas'

To celebrate our 40th anniversary, we have given the reception area in our innovation centre 'de Kas' a complete makeover. This presentation area fulfils an increasing need to give customers insight into the world of sustainable substrates and...
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Message VPN (Nov. 2021)

On November 4, the Association of Potting Soil and Substrate Manufacturers in the Netherlands issued a document that explains the current situation regarding the availability of raw materials. Not only is consumer demand for potting soil increasing, as...
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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 new fibre mills at Growrite India and we share the results of our cucumber trial with circular fertiliser from animal...
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Organic cultivation of sweet pointed peppers in soil (pt 3)

The trial with two varieties of organically grown sweet pointed peppers in soil has now been running in our innovation greenhouse for over six months and the fruits continue to grow more easily. In this trial, cultivation is carried out according to the...
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Substrate trial Lisianthus on ErfGoed cultivation floor

Cut flower cultivation in the soil presents a number of challenges. Plant health, water and environmental aspects, energy consumption and cultivation optimisation are just a few of them. Reason for ErfGoed to look for an all-round solution together with...
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Pot worm control by choosing the right substrate

Another successful orchid trial has been completed in Van der Knaap’s innovation centre ‘de Kas’. In this trial, three different substrates for cultivation of Phalaenopsis in 12-cm pots were compared. Fibre-Neth® proved itself yet...
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Press release: making potting soil and substrates more sustainable

Ten organisations that are involved in the production, use and sale of potting soil and substrates have indicated in a joint letter to Minister Schouten of Agriculture, Nature and Food Quality that they wish to advance in the field of renewable raw materials...
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Organic cultivation of sweet pointed peppers in soil (pt 2)

A trial with two varieties of sweet pointed peppers in the soil is currently underway in innovation centre 'de Kas'. In this trial, cultivation is carried out according to the usual organic cultivation method. However, when the crop needs it,...
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Lighting in innovation centre ‘de Kas’

The most diverse trials take place in the innovation centre 'de Kas'. Almost any desired cultivation situation can be simulated in twelve separate test greenhouses. This requires that the greenhouses are equipped with the latest techniques in...
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