TerrAktiv® green compost – Sustainability and quality, naturally combined
For the production of ProLine Substrates, Klasmann-Deilmann uses the high-quality green compost TerrAktiv® which is produced in the company’s own composting facilities. Both the green waste to be composted and the collecting points are regularly tested or inspected. The same applies to the rotting process, which is closely monitored in internal control processes (nutrient analyses, bioassays, temperature measurements). External controls are also carried out.
TerrAktiv® complies with the RAL criteria as well as the guidelines of the Dutch RHP standard for growing media and the European Organic Regulations (EU) no. 2018/848 and 2021/1165, controlled by ECOCERT F-32600. During the composting process, biodynamic preparations are added: yarrow (502), chamomile (503), stinging nettle (504), oak bark (505), dandelion (506) and valerian (507). This is a requirement for substrates used by Demeter-certified growers. Special attention is paid to the effective prevention of sciarid infestation. High compost maturity and sufficiently long storage supplemented by the use of Hypoaspis predatory mites minimise the risk of infestation with this pest.
TerrAktiv® green compost …
- … is biologically active
- … promotes mineralisation of organic fertiliser
- … suppresses root diseases
- … improves shelf life of pot herbs
- … acts as a slow-release nutrient source
- … has a high buffering capacity
- … is treated with biodynamic compost preparations
- … is certified by Ecocert® and RHP
TerrAktiv® FT – Innovative fermented fibres for enhanced plant growth
TerrAktiv® FT is a combination of TerrAktiv® green compost und high-quality wood fibres (GreenFibre®) which are fermented in a special process. The fermentation process stabilises the fibres and generates a high level of microbial activity. TerrAktiv® FT is lighter and lower in salt compared to pure green compost. It increases air capacity when used in blocking substrates.
TerrAktiv® FT is used specifically to achieve a good balance between ammonium and nitrate in the initial phase, when organic nitrogen is converted into plant-available nitrogen. This is beneficial during the germination stage, especially at higher temperatures. Overall, this results in healthier, more vigorous crop growth.
TerrAktiv® FT …
- … is nitrogen-stable
- … increases air capacity in press pots
- … optimises germination and plant development
- … allows peat substitution of up to 50% by volume in combination with other constituents
- … lowers the risk of excessive supply of ammonium to seedlings
TerrAktiv® bark humus – A valuable and sustainable constituent
TerrAktiv® bark humus is produced from untreated raw bark of spruce and pine, locally sourced from responsibly managed forests. The result is a homogeneous and safe material with excellent properties for modern horticultural needs.
The composting process, lasting at least six weeks and adhering to strict RHP quality standards, ensures a mature and reliable constituent with the benefit of a high microbial activity. Suitable for use alongside peat, coir, and GreenFibre® and other constituents, our TerrAktiv® bark humus has demonstrated excellent results in both peat-reduced and peat-free substrates during extensive trials. Its ecological benefits make it a valuable addition to more sustainable cutlivation practices.
TerrAktiv® bark humus …
- … has a favourable and stable pore structure
- … provides good aeration and drainage in substrates
- … shows a well-balanced water retention and re-wettability
- … has a strong buffering capacity for pH and nutrients
- … keeps a stable nitrogen balance (N fixation < 50 mg/L)
- … has a high natural microbial activity, antagonistic to pathogenic organisms
- … is free from weeds and agrochemical residues
- … is suitable for peat-reduced and peat-free substrates for pot plants, bedding plants, pot herbs, and hardy nursery stock
Deliverability and quality in harmony
Regardless of current crises and disrupted supply chains, the latest forecasts assume that the demand for growing media and the required raw materials will increase significantly internationally in the future.
Klasmann-Deilmann successfully ensured at an early stage that the increasing demand for horticultural products could be met with a stable supply of raw materials and supplier infrastructure.
