Ion-specifiek telen: Optimalisatie van bemesting in de glastuinbouw door gebruik van een ion-specifieke meter

In a four-year project from 2019 to 2022, ion-specific cultivation was extensively investigated through laboratories and cultivation experiments. At CEW (Centre of Expertise Water Technology ), the ion-specific meter CE-Line was tested with encouraging results. At Wageningen University & Research, Greenhouse Horticulture Business Unit, the effects of sub-optimal nutrient concentration at the root level were quantified. Demonstration trials at Royal Pride and Kwekerij Lijntje have contributed to experiencing the application of ion-specific cultivation in practice. CE-line proved sufficient accuracy and reliability to be used in practice. With more information about the composition of the drain, growers can more confidently recirculate the drain water and prevent discharge. This will contribute to achieving a virtually zero discharge of nutrients into surface water. This project has also provided evidence that sub-optimal nutrient concentrations at the root level can lead to a potential growth loss of 3-4%. Through ion- specific driven cultivation growers could reduce these risks and see the benefits on yield.