The N fertigation is the combination of Irrigation and external input functions. When used combined with drip irrigation the N input should be distributed to different horisons in the soil and also using the concentration of NH4 and NO3 from parameters in the external N input module. In the example below all water and nitrogen is assumed for layer4. By accident this input of Nitrogen was not considered in the model.
The snow depth bug was setting the snow depth to zero. Introduced March 13. Snow water storage was still correct but can make serious problem for the winter conditions with no snow.
The formation of NO and N2O from Nitrification rate became undefined if the temparature exceeded the max value for the temperature response function.