Dear Fernando & Kofikuma,

For those who work with nitrogen in the DSSAT model, it would be interesting
to look at an article in the Agron. J. of last May-June (94:462-474). We
describe there a new soil-organic-matter (SOM)/soil-N module, based on the
well-known CENTURY model. Particularly for low-input systems, which get most
of their nutrients from the decomposition of SOM+residues, this new module
is a big improvement. Also see the cover page of this issue of Agron. J.,
which refers to this article.

In the article it is described as applying only to the CROPGRO submodel of
DSSAT, but by now it has been linked to CERES also and we are working on
rice too. This new module will be part of the next DSSAT version (DSSAT4.0),
which is to be released in a few months' time.

Anyone who would like a PDF of this article can send me an email.

Arjan Gijsman
Univ. Florida / Centro Internacional de Agicultura Tropical (CIAT), Colombia

-----Original Message-----
From: Kofikuma Dzotsi
To: [log in to unmask]
Sent: 10/24/02 5:19 AM
Subject: Re: Nitrogen outputs

Fernando:
Detailed nitrogen and water outputs for CERES models are written per
layer to the nitrogen.out and water.out files of the OUTPUT component.

best regards
Kofikuma


DSSAT - Crop Models and Applications <[log in to unmask]> wrote:
> Hi
> I want to know if it is possible an how to get nitrogen outputs from
CERES Wheat, detailed by layer. Iwant to contrast some measures that I
have made at harvest of soil inorganic nitrogen till 60 cm, and the
nitrogen output of the model (*.whn) give the inorganic nitrogen content
from all the profile.
> I hope taht someone can help me
> Thank you in advance
>
> Ing. Agr. Fernando Salvagiotti
> Ecofisiologia y Manejo de Cultivos - Fertilidad de suelos
> EEA Oliveros - INTA
> Ruta 11 km 353 - 2206 - Oliveros
> Republica Argentina
> Tel Laboral: 54 -03476-498010/498011
> Tel Particular: 54- 03476-498856
> Celular:54 - 03476-15696144
> e-mail: [log in to unmask]