Review N mineralization in cassava/update coefficients

[lpmorenoc]

The model was creating high rates of mineralization due to fallen leaves (AMINER=mineralization, RNUP=root N uptake): If we remove the mineralization from the top layer:

[lpmorenoc]

Current output C4 MCol-22 CCPA7801 (Century):

Removing mineralization from surface:

[lpmorenoc]

Adding new coefficients for cassava generates similar results than default value (PSLIG =16):

If we increased PSLIG to 0.27 (from Oni et al., 2011 https://doi.org/10.1111/j.1439-0396.2010.01086.x) the results are the same than using PSLIG of 0.16: Variable AM looks to be modified but PSLIG or SCN are not modified: IPSOIL 290, SENESADD_C 70, 97 (ADDN, SENESCE % ResE(0,1)).

[lpmorenoc]

Modifying the SPE file variable LLIG% from t0% to 16.8% there are small but minimum changes in the mineralization: Similar if the value is now 27%:

[lpmorenoc]

Defining the % of N in the fallen leaves as 0% creates the following graph:

[lpmorenoc]

Reducing %N to 1.6 considering the lower %N in the petioles we get a reduction in the mineralization:

Increasing the % of lignin to 100% produces almost the same results of mineralization with slightly higher values:

[lpmorenoc]

Running the experiment with CERES instead of CENTURY: CERES-SOM generates higher N stress:

And less mineralization: CERES:

CENTURY:

[lpmorenoc]

Warning message from CENTURY: