The computer program N-Expert
– Fertilizer advice and nutrient balances for field vegetables –

For Windows operating systems, we provide an installer that installs the N-Expert software, the N-Expert database, and a current Java runtime environment on the user’s computer.
Both the installer and N-Expert software do not require Windows administrator privileges.
N-Expert installer for Windows (~ 80 MB )

An extensive description of what data is used in the N-Expert database (some data is now obsolete, but the description is still up-to-date):

A table of Nmin setpoints for field vegetables :

A table of nutrient levels in both the harvested products and the harvest harvest residues of vegetable crops

A table of nutrient levels and N mineralization of organic fertilizers
(commercial fertilizer, farm manure, green manure and harvest residues)