Lecture by Pius Floris on the difference between soil biology and root biology at the Fertasa Symposium 'Soil Fertility &amp; Plant Nutrition' in Pretoria, South Africa.

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The difference between soil biology and root biology

PHC Lecture: The difference between soil biology and root biology

Discover us in our corporate short video

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Soil

Den Ouden Group

We are partner urban redevelopment, civil concrete construction, concrete roads and landscape design.

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Smart and safe infrastructure

We produce locally renewable raw materials.

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Circular, biobased solutions

We are global specialist in the field of soil improvement and plant growth.

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Ensuring a healthy soil

OUR ACTIVITIES

Met trots melden we dat familiebedrijf Den Ouden een niveau is gestegen op de Veiligheidscultuurladder.

GROEP - Den Ouden behaalt Trede 4 Veiligheidscultuurladder

Den Ouden heeft reconstructie Paterstraat in Kerkdriel afgerond.

INFRA - Reconstructie Paterstraat Kerkdriel afgerond

Combinatie Den Ouden Infra en Ploegam is onlangs gestart met de uitvoering van het project Reconstructie Heldensedijk / Meijelseweg.

INFRA - Reconstructie Heldensedijk / Meijelseweg van start met verplaatsing en sloop brug

Een mooie nieuwe opdracht voor Den Ouden Infra, specialisme Betonwegen.

INFRA - Den Ouden brengt 6,5m brede betonweg aan langs het strand van Almere

12 mei 2023 bestaat Den Ouden 75 jaar.&nbsp;

GROEP - 75 jarig jubileum Den Ouden

STORIES

We create solutions that contribute to a sustainable living environment. We do this with smart infrastructure, healthy soil and circular biobased products and services.

What do we do?

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We are here for the next generations

Den Ouden Groep

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Concrete

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Bio-based

We supply beneficial soil fungi and soil bacteria and other agents that make plants resilient and better functioning.

Go to PHC

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Plant Health Cure (PHC)

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Subscribe to the PHC newsletter

We grow soil. Expert in soil biology, mycorrhizae, bacteria and fungi. Manufacturing and worldwide distribution of solid and liquid organic fertilizers for healthy soil and plants. 

Ga naar PHC

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Den Ouden PHC

From entire residential areas to village centers and shopping areas: we design and realize public space in urban areas.

Urban reconstruction

Our Civil Concrete Construction specialists realize civil concrete structures such as basements, bridges, and viaducts.

Civil concrete construction 

We design, realize and maintain concrete pavements such as roads, roundabouts and platforms at airports.

Concrete roads

With nature restoration and the realization of nature-friendly banks, we strengthen nature, biodiversity and the recreational value of nature reserves and city parks.

Landscaping 

OUR SPECIALIZATIONS

With urban redevelopment, civil concrete construction, the construction of concrete roads and landscape design, we create a livable public space for tomorrow's generation.


Contact us

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Den Ouden Infra

Do you have constructions planned in non- post-war disturbed soil, or do you suspect that World War II explosive remnants (OO) may still be present in the soil?

Historical Preliminary Research & Risk Analysis

Den Ouden Bodac has years of experience in surface and depth detection and is a reliable partner when it comes to explosives detection and securing.

Explosives detection on land 

For the detection and clearance of non-explosive remnants of war in an underwater environment, Den Ouden Bodac has a team of specialists who perform the work with great care. 

Explosives detection in water 

Den Ouden Bodac investigates whether there are archaeological remains in the ground at the project site and then secures these archaeological finds. 

Archaeology 

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Aircraft salvage

By locating and safeguarding war remains and archaeological values in the soil, we create a manageable public space for tomorrow's generation.

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Den Ouden Bodac

We are the partner for the useful application of at least 5,000 m3 of soil or dredging sludge on the land soil or in surface water.

Large-scale Soil Application

At Den Ouden BraBob we are also specialized in combating invasive exotic species. 

Combating invasive exotic species

Our facility De Kempen in Sterksel is recognized for the biological cleaning of contaminated soil in accordance with BRL SIKB 7500, protocol 7510.

Biological cleaning

Meer informatie over onze grondbanken

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Land banks

Independent knowledge partner in the qualification and sustainable reuse of consignments of soil, sand, dredged material and granules.

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Den Ouden BraBob

Working together for future-proof, sustainable and circular agriculture and horticulture

Agriculture and horticulture

High-quality products for the world of tomorrow

Public Green Space

Biobased raw materials

Together towards sustainable alternatives

Industry

Our main segments

Processes green residual flows into 100% circular solutions for the potting soil and substrate sector, agriculture and horticulture, public space and the energy sector.

Our segments

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Den Ouden Organic

Expert in developing forward-looking & organic total solutions for soil and plants. Organic Matters!

Expert in developing total organic solutions for healthy soil and plants. Organic Matters!

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Den Ouden Ferm O Feed

Specialist in soil improvement and plant growth.

Visit the GrowSolutions website

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Den Ouden GrowSolutions

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Head office

HR - Fabriek GrowSolutions

Production location Den Ouden GrowSolutions (Helmond)

De Kempen (Sterksel)

Brabantse Wal (Steenbergen)

De Peel (Helmond)

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Grondbanken

Vlagheide (Schijndel)

Midden-Limburg (Kelpen-Oler)

Land Van Cuijk (Haps)

West-Brabant (Zegge)

‘t Gooi (Muiderberg)

Kreekrak (Rilland)

Midden-Brabant (Oosterhout)

Belvédère (Maastricht)

Maasland (Rosmalen)

Parkstad (Brunssum)

Locaties Organic

Locations Organic

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De Werf (Sint-Oedenrode)

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Our activities

Services

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About us

Our Stories

 About us

Den Ouden Brabob

Market segments

Products

Expert in soil biology for agriculture and horticulture

PHC-products

Onze stories

What we do

Compost, wood fibre, soil improvers and ground covers

Bespoke soil improvers, fertilisers and soil biology

Total organic solutions for healthy soil and plants

GrowGreen, SolidGreen, CirQleaves, BoerGoed