*MAIZE ECOTYPE COEFFICIENTS: GECER040 MODEL

!                                1     2     3     4     5     6     7     8     9    10    11    12    13    14    15    16    17    18    19
@ECO#  ECONAME.........  TBASE TOPT  ROPT  P20   DJTI  GDDE  DSGFT  RUE   KCAN
IB0001 GENERIC MIDWEST1    8.0 34.0  34.0  12.5   4.0   6.0   170.  4.2   0.85
IB0002 GENERIC MIDWEST1    8.0 34.0  34.0  12.5   4.0   6.0   170.  4.5   0.85
IB0003 GENERIC MIDWEST1    8.0 34.0  34.0  12.5   4.0   6.0   170.  2.0   0.85
DFAULT DEFAULT             8.0 34.0  34.0  12.5   4.0   6.0   170.  4.2   0.85

!TBASE - base temperature below which no development occurs, C
!TOPT - temperature at which maximum development rate occurs during vegetative stages, C
!ROPT - temperature at which maximum development rate occurs for reproductive stages, C
!P2O -  Daylength below which daylength does not affect development rate, hours
!DJTI - Minimum days from end of juvenile stage to tassel initiation if the cultivar
!	       is not photoperiod sensitive, days
!GDDE - Growing degree days per cm seed depth required for emergence, GDD/cm
!DSGFT - GDD from silking to effective grain filling period, C
!RUE - Radiation use efficiency, g plant dry matter/MJ PAR
!KCAN - Canopy light extinction coefficient for daily PAR.