Nutrient Losses from Non-Point Sources or from Unidentified Point Sources? Application Examples of the Smartphone Based Nitrate App.

Joachim Rozemeijer, Deltares, Delft, Netherlands, Rudie Ekkelenkamp, Deltares, Software, Data management and Innovation Department, Delft, Netherlands and Bas van der Zaan, Deltares, Soil and Groundwater Quality Department, Delft, Netherlands