ABSTRACT
Thestructureofthemodelisasetofsimplefirstorderdifferenceequations,but
-0.85 + 0.0714(T}
crete events in the simulation. A small main program calls subroutine GASP, which controls input then initiates the simulation by calling other GASP IV or user-written subroutines_
The vegetative branches start growth at node VB and 10 days after the first vegetative branch starts growth, all have been initiated. VB is calculated by
0 z w Cl < a: w > <
Plant growth is calculated after STATE calls PLANT, wherein carbohydrate and N balances are performed. A soil-water balance is performed in SOIL Wand soil-nitrogen balance is accomplished in NITRO. Processes necessary for performing the material balances are calculated in various subroutines described below.
