Soil N initialization needs Soil Temperature

[chporter]

Subroutine SoilNi_init.for initializes variables for the SoilNi.for. The first time the subroutine is called, values of ST, soil temperature are zero, and this zero value is used to calculate TFNITY(L) for each soil layer, L. This can result in some slight differences in nitrification rates early in the simulation.

[chporter]

Also, PHFACT is 0 first time and 1 second time.
I'm using a test dataset from a user but this is a generic problem.
C:\DSSAT48\RICE\PHUONG\TEST1892.RIX (in case I need to find it later).
Phuong.zip

[chporter]

Also, see commit 50d8b20019532dfa1cd6d3b23bb4290b755877d3 where I fixed another initialization error in denitrification. Will be part of my next pull request.