! Coefficients used in the Cropsim-Ceres model differ from those used
! in DSSAT Version 3.5. They can be calculated (approximately) from
! V3.5 coefficients as follows:

! P1V   = P1V(v3.5)*10
! P1D   = P1D(V3.5)*20
! P5    = P5(V3.5)*20 + 430
! G1    = G1(V3.5)*5 + 5
! G2    = (G2(V3.5)*0.35+0.65) * P5/20
! G3    = G3(V3.5)*0.7
! PHINT = PHINT(V3.5)

! Translated coefficients should be first used with ecotype coefficients
! (especially for phenology) that approximate those embedded in the code
! of the 3.5 model. Ecotypes DS35xx (where xx indicates the value used for
! phint),which have phenology coefficients comparable to those used in
! DSSAT3.5,are presented in the ecotype file.

! Converted coefficients,and those listed below,should always be
! tested by using them with real experiments and comparing model
! outputs with measured values.



At 07:16 AM 11/22/2006, you wrote:
>Dear all,
>I am trying to simulate winter wheat in Austria with DSSATv4.
>I have got an old cultivar file (WHCER980.CUL) in the DSSATv3 format.
>I converted the parameters with the formulas for parameters in the
>DSSATv3.5 format (given in WHCER040.CUL). The conversion is not
>correct.
>Could anybody send me the conversion formulas for DSSATv3 to DSSATv4,
>or convert this cultivar.
>
>P1V     P1D     P5      G1      G2      G3      PHINT
>6.0     4.5     2.5     4.5     3.1     1.9     95
>
>many thanks and kind regards, Pablo.