BU Greenhouse Horticulture of Wageningen University & Research is equipped with several laboratories, growth chambers and greenhouse compartments fit for state of the art measurement and research on substrates for horticultural purposes.
Our experts have experience with many substrates as mineral fibres, mineral granulates, synthetic fibres and foams as well as peat products, potting soils and composts.
Different substrate test methods
A range of national and international test methods (often developed by our experts) may be performed. Tests may be physical, chemical or biological in nature and include rewetting rate, air and moisture characteristics, durability and phytoxicity.
Our experts used their experience in testing substrates, to make an introductory program fore clients involved in introducing or developing new substrates: "Stepwise assessment of horticultural substrate". This program can also be used to evaluate and improve existing substrates.
Measurements for new substrates
For new substrates, it is important to know in an early stage whether or not the demands for professional horticulture are met. Such demands may be measured with international or national test methods or adaptations on them. Typical measurements are moisture characteristics, absence of toxicity and durability. Our experts developed a stepwise series of tests for the development and assessment of new substrates.
By starting with a choice from basic analyses it becomes clear in an early stage and at moderate costs whether the material has potential. Measurements may include microscopic analysis, root penetration resistance, sinking rate and phytotoxicity.
The essential analyses provide information on moisture characteristics, rate of rewetting, chemical analysis and durability of the product.
Examples of special analyses are shrinkage, particle size analysis and hydraulic conductivity. Wageningen University & Research Greenhouse Horticulture may also advice to adapt existing measurement methods to better suit the purpose. There already is a range of unique material specific tests.
The ultimate goal is to grow plants. Therefore a range of growth test, increasing in costs and duration, are offered to assess the growth potential over several weeks up to a year or longer.
Are you interested?
Do you have a question about analysis of substrates or would you like us to test your substrate? Fill in this form and we will contact you as soon as possible: