Reductie stikstofuitstoot door precisie bemesting: Aanvullende metingen voor STOWA in de Water Efficiënte Emissieloze kas

C. Blok, A.A. van der Maas, A. van Winkel

Research output: Book/ReportReportProfessional


Emission of greenhouse drain water is bringing unacceptable quantities of nitrate, phosphate and crop protection agents into the surface water and ground water. Growers are expected to accept zero emission of drain water easier if they have tools to reduce fluctuations in individual nutrient quantities in the drain water. STOWA (Stichting Toegepast Onderzoek Waterbeheer) financed additional measurements by Wageningen UR Greenhouse Horticulture in a running project. The measurements were aimed to control (unsafe) fluctuations of nutrient supply compared to uptake. In cucumber cultivation extra measurements were used to calculate the plant uptake per element in mmol/ m2/D and to relate this uptake per element to the radiation sum. The new information led to better decisions on adaptation of the nutrient supply schedule than when decisions were based on just concentration. De fluctuations between supply and uptake of nutrients expressed as mmol/m2/D (load) were smaller when using the new information. During the cultivation no nutrient solution was emitted.
Original languageDutch
Place of PublicationBleiswijk
PublisherWageningen UR Glastuinbouw
Number of pages26
Publication statusPublished - 2015

Publication series

NameRapport GTB


  • emission reduction
  • fertilization
  • drainage water
  • greenhouse horticulture
  • precision agriculture
  • cucumbers

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