Breakthrough in organic cultivation

Publication date: 30-07-2020

Van der Knaap has developed a sustainable cultivation system in order to cultivate organically without using the soil. After several years of testing, the organic nutritional solution is now available to growers.

In recent years, Van der Knaap’s R&D team has been focussing on developing a bioreactor that converts protein into nitrate nitrogen (NO3--N). The nutrient solution produced with the reactor is free of organic residues, fungi and bacteria.

Nitrogen

In the bioreactor that Van der Knaap developed, residual protein and amino acids are converted into nitrate nitrogen (NO3--N) by using specific bacteria. In crops cultivated in the soil, the soil bacteria convert nitrogen into nitrogen that can be absorbed by the plant. However, there is often insufficient nitrogen available when the plant needs it or too much when the plant does not need it. With the nutrient solution the bioreactor produces, drippers can deliver exactly the right amount of nitrogen. This facilitates precise controlling.

European law

In North America and Canada, the organic nutrient solution system is now being used satisfactorily by several organic vegetable growers. European law is different, however. Products that are grown in this way are not considered organic, despite the advantages of growing on substrate. With cultivation in the soil, there is always emission of water and nutrients into the soil. With cultivation on substrate, everything can be collected and reused and the yield is generally much higher.

Outdoor cultivation

The organic nutrients can also be used in current organic soil cultivation. The production that these growers achieve is often 50-60% of results in substrate cultivation. With our organic nutrients, this could increase to 80-90%.

Trials in ‘de Kas’

Over the past two years, we have grown a variety of vegetable crops, soft fruit and lettuce in our test centre ‘de Kas’ using the common cultivation method, but with organic nutrients from the bioreactor. In addition, we researched the influence these nutrients had on substances and taste. Do you want to know more about our findings? Take a look at our newsletter: GrowHow!

More information?

For more information about the cultivation system or about the trials in ‘de Kas’, please contact the Research & Development department via rd@vanderknaap.info or +31 (0) 174-296606.

Other articles

> Organic cultivation of sweet pointed peppers in soil (pt 3)
> Substrate trial Lisianthus on ErfGoed cultivation floor
> Pot worm control by choosing the right substrate
> Press release: making potting soil and substrates more sustainable
> Organic cultivation of sweet pointed peppers in soil (pt 2)
> Lighting in innovation centre ‘de Kas’
> Organic cultivation of sweet pointed peppers in soil (pt1)
> Press release by VPN
> Collaboration Van der Knaap and Biobest in 'de Kas'
> Discover the possibilities of innovation centre 'de Kas'
> The perfect sensor for coco substrates
> Sustainable: drying plugs with geothermal heat
> Opening of Van der Knaap México
> Van der Knaap Group celebrates 40th anniversary
> Out now: the latest Grow-How!
> Lettuce in a hydroponic system: 100% organic nutrients
> Van der Knaap Group resumes coco production
> Compact cultivation of kalanchoe without the use of Tilt
> Weed control with TopControl
> Satisfied students after using Forteco Power in All Climate Greenhouse
> New Holland Potgrond mixing line ready
> Influence of substrate on shelf life of Phalaenopsis
> Van der Knaap rises in the Hillenraad100
> Update on Holland Potgrond Poeldijk renovations
> New state-of-art propagation plugs with Ellepot paper
> Installation of Holland Potgrond mixing line
> Westland alderpersons visit Van der Knaap Groep
> Van der Knaap joins the Greenhouse Horticulture Club of 100
> Successful orchid knowledge day at Van der Knaap
> Van der Knaap signs for geothermal energy
> Reopening Antalya Substrat
> Van der Knaap at Hortiflor Beijing
> 'Van der Knaap square' at WHC
> HortiContact GO 2018
> "Outstandingly Positive Mood" at IPM ESSEN 2018
> Van der Knaap Group concludes agreement with NatureFresh Farms
> New: Fibre-Neth® Bookplug
> The Van der Knaap Group takes part in Demokwekerij Westland

Van der Knaap uses cookies to ensure that we give you the best experience on our website. Cookies shall be used only for functional and analytical purposes. If you continue without changing your settings, we'll assume that you are happy to receive all cookies from this website. Please read our privacy statement for more information.