Biostimulants : soil and plant improvement

Since 2013, Poortershaven has expanded into the sale of soil improvement minerals, also known as biostimulants. Target groups that we focus on include:

Horticulture: such as tree and fruit cultivation and open field vegetable growing, ornamental horticulture and bulb and tuber crops.

Arable farming: The effects that our products have on these crops include improving the absorption of trace elements and increasing the silicon content in the plant. The products also boost organisms in the soil, thereby improving the yield, they can reduce the need for disease control and the plants become stronger.

Pasture farming: We concentrate primarily on pastureland and silage maize cultivation. During application, a number of products can be processed through the manure. This ensures a more uniform manure, which holds the nitrogen better and releases less ammonia. The foregoing has a positive effect on organisms in the soil, therefore resulting in a healthier crop for the animals.

Nature: We strive to improve depleted natural environments. Our products reduce acidified soils, resulting in increased organisms in the soil. This ensures variety in plant and animal species, less desiccation and a reduction in diseases caused by pests.

Municipalities: Municipalities also use our products for park management, such as creating borders and planting trees.

Sports fields: In this category, we use our products to improve the soil by holding minerals for longer. This results in less fertilisation being required and ensures that the grass remains green and continues growing for longer. This also has a positive effect on the moisture binding capacity and permeability of the soil.

Our range of biostimulants for soil and plant improvement

Poortershaven: Know-how

Poortershaven continuously develops new applications for the use of clay and rock minerals in the agricultural sector. This has resulted in well-known and frequently used products for animal health, soil improvement and animal bedding hygiene.

The colour of the products may differ in real life, due to the sharpness and screen settings. If desired, we would be happy to send a sample.

Broad product portfolio

Poortershaven offers a wide range of products. This means that within a product range you will always find a form that suits the intended use and/or technical installation.

Continuously innovating

We collaborate with universities and research institutes, among others, to test our products and their applications and to generate knowledge about optimal use.

Product knowledge

Through long-term relationships with our suppliers, we supply reliable and stable products. Along with our suppliers, we have a lot of in-house specialist product knowledge.


We know our products and would be happy to get in touch with you. We are happy to share our knowledge about our products with you, enabling us to jointly find an appropriate solution for your problem.


If you have any questions about our range, prices or current stock, if you would like advice, or if you would simply like to touch base with us, please contact us.

We look forward to assisting you.

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For more information, please feel free to contact one of our specialists.

Call +31(0)10 4365755 or mail

Part of Poortershaven Industriële Mineralen BV