Dear Xiong wei

What I have written was with reference to wheat crop, I have no information
about maize and rice crop in this aspect. sorry.

Best wishes

Humaira



On 4/13/06, xiongw <[log in to unmask]> wrote:
>
> Dar Humaira
>
> I know there need a conversion from V35 cultivar coefficients to V4 for
> wheat, but for rice and maize, I found there is no different between V35 and
> V4 cultivar file, can you point out me which file give the coversion factors
> values for rice or maize crop, I need it very urgent, thanks in advance.
>
> Best Regards.
>
> Xiong wei
> ----- Original Message -----
> From: "Humaira" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, April 13, 2006 12:12 PM
> Subject: [金山毒霸识别此邮件为垃圾邮件]Re: cultivar coefficientsients
>
>
> I think you can't use the same values of cultivar coefficients in
> DSSAT V4.0and DSSAT
> V3.5 and may also of V 3.0, because in V3.5 these coefficients are in
> scalar
> values, to use them in DSSAT V 4.0 you have to convert them first in the
> units in which DSSAT V4.0 took the values, conversion factors are given in
> DSSAT V4.0 cultivar file.
>
> Best wishes
>
> Humaira
>
>
> On 4/13/06, William W. W. Wong <[log in to unmask]> wrote:
> >
> > Dear Xiong Wei,
> >
> > I find similar problem when I used DSSAT Ver 4. The yields are lower
> than
> > that simulated with Ver. 3.0, using the same genotype coefficients. I
> > wondered why this is so? So far, no one has responded yet. Have you got
> in
> > touch with Upendra Singh?
> >
> > Hope this can be explained.
> >
> >
> > William
> >
> >
> > ----- Original Message -----
> > From: "xiongw" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Monday, April 10, 2006 9:43 AM
> > Subject: cultivar coefficients
> >
> >
> > > Dear Colleagues
> > >
> > > I used the same cultivar coefficients and same experiment file for
> rice
> > in
> > both DSSAT35 and DSSAT35, but the different simulated yield and other
> > rusults were generated, the yields simulated by dssat4 are low than
> > simulated by dssat35. Anyone know what's matter with this problem? is
> > there
> > some changes for cultivar coefficients of RICE model in DSSAT4?
> > >
> > > Thanks in advance
> > >
> > > Xiong Wei
> >
>
>
>
> --
> Humaira Sultana
> Research Felllow
> Global Change Impact Studies Centre
> 1st Floor, Saudi Pak Tower, Jinnah Avenue, Blue Area,
> Islamabad, Pakistan.
> Ph: 92-51-9219785
> Fax:92-51-9219787
>



--
Humaira Sultana
Research Felllow
Global Change Impact Studies Centre
1st Floor, Saudi Pak Tower, Jinnah Avenue, Blue Area,
Islamabad, Pakistan.
Ph: 92-51-9219785
Fax:92-51-9219787