Good day sir. This is Steve Henein from Agriculture Canada. I have some concerns with regards to the DSSAT model. Our problem is somewhat puzzling. My study advisor Dr. Aston Chipanshi has handed me yet another experiment that he was able to run on DSSAT 3.5 with the correct yields. I took that same experiment and entered everything exactly the same. When I go to run the model, the yields are far from desirable. I then called Mr. Hunt yesterday and he told me to change the MF variable in the treatment section of the X file from 0 to 1. This resulted in the experiment to recognize the fertilizer that has been applied. He then instructed me to toggle the appropriate variable in the treatment section that would activate the moisture in the soil. I have entered the appropriate soil moisture levels in the XBuild under Initial conditions heading. I have also found the initial conditions variable in the treatments heading and changed that to 1. None of these new changes have changed the yields to what they should be.

Sir I need some help. Could you please e-mail me or give me a call at your earliest connivance.

Thank you
Steve


Stephanos Mitchell Henein B.Sc, B.A
Agriculture and Agri-Food Canada/Agriculture et Agroalimentaire Canada
GIS Analyst & Support
Telephone/Téléphone: 306-780-6567
Facsimile/Télécopieur: 306-780-5018
1800 Hamilton Street, Suite 408
Regina, Saskatchewan
S4P4L2
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 Agriculture and Agri-Food Canada - Agriculture et Agroalimentaire Canada

-----Original Message-----
From: DSSAT - Crop Models and Applications [mailto:[log in to unmask]] On Behalf Of Gerrit Hoogenboom
Sent: Wednesday, February 14, 2007 12:44 PM
To: [log in to unmask]
Subject: DSSAT, source code, and calibration

Dear colleagues,

I appreciate the earlier discussion. The source code for the Cropping
System Model of DSSAT is in the public domain, but not available as a
download from the ICASA web site. If you are a registered user of
DSSAT, we will be glad to provide you with the most recent source
code. Many components of the CSM v4 source code are very well
documented and can be found in DSSAT v4, Volume 4, as distributed on the CD.

We are in the process of developing a new GenCalc for DSSAT v4 and it
will be included in our next release. If you are interested in
testing the Beta version, please contact Dr. Tony Hunt

We are very open to improvements of the current models as well as
development of new tools. If you would like to contribute, please let us know.

PLEASE DO NOT REPLY TO this message if you would like a copy of the
source code or need to contact Dr. Hunt.

Regards,

Gerrit