search

APSIMInitiative / APSIM710

APSIM
https://www.apsim.info
30 stars 47 forks source link

Upper limits for no3 and nh4 in APSIM crop modelling #1917

Open santoshkaini opened 4 years ago

santoshkaini commented 4 years ago

Hi, I am a novice user to APSIM crop modeling and trying to simulate “Continuous wheat” module in APSIM. I am wondering if you could suggest me in this issue. APSIM Warning Error

 no3ppm =     1200.000
         exceeds upper limit of    300.0000
 Component name: paddock.Loam_field_1 Nitrogen
                  -------------------
 nh4ppm =     700.0000
         exceeds upper limit of    300.0000
 Component name: paddock.Loam_field_1 Nitrogen

When I reduce these values to 300, this issue is resolved. Are the upper limits for both no3 and nh4 are 300 ppm? Thank you.

peter-devoil commented 4 years ago

Yes, though as this is a warning message, the simulation continues. Usually these limits are set to "mathematically sensible" values - are you sure you observed N at those levels?

santoshkaini commented 4 years ago

Thank you, Peter.