the quality marks RHP Horticulture and RHP Mushrooms are relevant for Horticulture
The RHP foundation manages two quality marks: RHP and RAG. The certification has six different fields of application, each with its own spearheads, products and certified companies. For you as horticultural entrepeneur, the quality marks RHP Horticulture and RHP Mushrooms are valuable.
This quality mark for substrates offers more security to growers of flowers, plants, vegetables and fruit. The RHP Horticulture quality mark guarantees the quality of the substrate in the chain from production to processing at the company of the grower. Growers increase the security that the substrate complies with the various quality requirements, like:
In short, growing media that comply with the wishes of the culture.
Control of risks
Substrates and raw materials that carry the quality mark RHP Horticulture, must comply with a large number of phytosanitary requirements. The products must be clean and pure, so that there is no risk for the application in the culture. That already starts at the raw materials. When they are pure, then they have to stay pure in the production process at the substrate supplier.
An RHP-product among others complies with the requirements below:
Securing physical specifications
RHP develops actively new parameters to assure you that RHP certified substrates guarantee the basis of an optimal culture. Nothing may be left to chance! There is a number of internationally recorded methods to analyse physical (and chemical) properties. However insight into a larger spectrum of properties is required.
New parameters which RHP develops, are for instance:
Securing nutrient aspects
RHP Horticulture provides insight in the chemical properties of substrates. The property of a substrate is closely connected with the kind of use and the plants that grow in it. Is it about lettuce plants, bedding plants or orchids; every plant has its own wish list. The acidity is important, but also the (trace)elements. The RHP quality mark puts requirements to the raw materials and the composition of additives (for ex. fertilizers) that are added to the substrate.
RHP puts high requirements to the composition and the quality of fertilizers:
The quality mark RHP Mushrooms offers mushroom growers more security that they use a responsible and practicable substrate. In the culture of mushrooms, the substrate ‘casing soil’ is a very important part. The most important function of casing soil is actually creating and retaining a water buffer. In this water buffer, the mycelium develops as basis for the mushroom. With the RHP Mushrooms quality mark you can trust that the composition of the various raw materials has been chosen in such a way that it complies with the requirements that EUREP-GAP has drawn up for a substrate.
Research by RHP
Together with the casing soil producers, RHP executes research into the physical characteristics of casing soil. In a first phase, ‘in-situ’ samples have been taken from casing soil that was brought in. In-situ samples are undisturbed samples which have directly been taken from a culture situation. The collective research leads to more insight and results in making the physical properties of casing soils measurable.
At the moment, amplified analysis methods are in development, so that by means of these analysis methods various casing soils can be distinguished. A foundation for tools is lain for the mushroom grower.