13      crop_code
SG      crop_name_1
Sorghum crop_name_2
5242.4    total_biomass_C
0.35    portion_of_grain
0.4    portion_of_shoot
0.25    portion_of_root
54.7    plant_CN_ratio
35     grain_CN
85.0      root_CN_ratio
75.0    shoot_CN_ratio
322     water_requirement
5       max_LAI
2       max_height
2600    TDD_10
1       N_fix
0.45	  initial efficiency of use of absorbed light at 30 C, 340 CO2, (kg CO2/ha/h)/(J/m2/s)
70      maximum rate of leaf photosytensis, kg CO2/ha/h
0.012   rate of crop development in vegetative stage at a reference temperature and reference daylength (1/d, 0.020) 
0.050   rate constant of crop development in reproductive phase at a reference temperature, 1/d (0.050)
0.73    economic copmponent/storage organc by weight
400.0   specific leaf weight constant, kg dm/ha
2500.0  specific stem weight, kg dm/ha
0.4     ratio of internal/external CO2 concentrations
1.4     maximum root depth for crop, m
0.05    increase rate of root depth, m/day


