Methodiekontwikkeling schadegrensbepaling reinigings- en ontsmettingsmiddelen : PPS Voorkomen en bestrijden emissies kasteelten II, WP 3; TU18006

Summary

Cleansing and disinfection products are applied to clean pipes in soilless growing systems. These product may potentially inhibit growth. It was investigated which test method is most suitable (effect, reproducibility, expenses, costs). The phytotox testing method appeared to be best. A number of products (chlorine products, other cleansing products, hydrogen peroxide with stabilizer, ozone) were tested in commercially used concentrations and lower ones if needed to avoid growth inhibition. Bleach and cleansing products cause large inhibition and should be avoided to enter the circulating water flow. Disinfection products don’t give growth inhibition in concentrations lower as commercially advised. Ozone did not give inhibition or stimulation of growth. Within the project a few products are tested. In future others can be tested on demand. It has not been investigated if the product has its claimed effect.