Inorganic N and P

[Alfonso Albacete]

Hello,

I am trying to model N and P balances in my watershed. I am especially interested in inorganic nutrients. I have tried to include the fertilizers in the Editor, but I did not get any inorganic nutrients in the balances. Thus, I am wondering how to include the fertilizers in the Editor to get a correct output of the inorganic N and P. 

Looking forward to your reply. Thank you in advance.

Kind regards,

Alfonso Albacete