12      crop_code
PG      crop_name_1
Perennial_grass crop_nam
18666.7  total_biomass_C
0.45    portion_of_grain
0.01    portion_of_shoot
0.54    portion_of_root
19.6    plant_CN_ratio
16.5    grain_CN
23.4    root_CN_ratio
16.5    shoot_CN_ratio
400     water_requirement
3       max_LAI
0.5     max_height
3000    TDD_10
1.2     N_fix
0.40	  initial efficiency of use of absorbed light at 25 C, 340 CO2, (kg CO2/ha/h)/(J/m2/s)
60      maximum rate of leaf photosytensis, kg CO2/ha/h
0.03   rate of crop development in vegetative stage at a reference temperature and reference daylength (1/d, DRCV) 
0.01   rate constant of crop development in reproductive phase at a reference temperature, 1/d (DRCR)
0.0     economic copmponent/storage organc by weight
450.0   specific leaf weight constant, kg dm/ha
1500.0  specific stem weight, kg dm/ha
0.5     ratio of internal/external CO2 concentrations
1.0     maximum root depth for crop, m
0.02    increase rate of root depth, m/day


