Juan, 
 
In your special case, what you want is the simulated soil water balance from the wheat crop as the initial soil water input to the soybean model, as of the soybean sowing date.  This should work.
 
Ken Boote

________________________________

From: DSSAT - Crop Models and Applications on behalf of JUAN PABLO MONZON
Sent: Thu 6/29/2006 12:11 PM
To: [log in to unmask]
Subject: Re: Simulation of intercrops



Thanks Dr. Boote for the information. In the case I have described, the soybean is sown into standing, 20-25 days prior wheat harvest, so the wheat affects the soybean enviroment, but the soybean is too small to have any influence  on the wheat.

Regards

Juan Pablo Monzon 



	
________________________________

        From:  "Boote,Kenneth J" <[log in to unmask]>
        Reply-To:  DSSAT - Crop Models and Applications <[log in to unmask]>
        To:  [log in to unmask]
        Subject:  Re: Simulation of intercrops
        Date:  Thu, 29 Jun 2006 11:02:46 -0400
        >Juan,
        >
        >I am sorry, but there is no program for interaction of crops in the DSSAT.  I would think that what you are doing will not work very well, because the approach you describe gives one crop first priority, and that will make all the difference and create biased results.
        >
        >Ken Boote
        >
        >________________________________
        >
        >From: DSSAT - Crop Models and Applications on behalf of JUAN PABLO MONZON
        >Sent: Wed 6/28/2006 8:31 PM
        >To: [log in to unmask]
        >Subject: Simulation of intercrops
        >
        >
        >
        >
        >
        >
        >
        >Dear all
        >
        >I am trying  to simulate intercrops with DSSAT, to  do so, I am changing the  initial water content and  the incident radiation of one crop (soybean) with the results from the other crop (wheat). This is working fine, but it  would be better to have both models (CERES-Wheat and CROPGRO) interacting, i.e. the input incident radiation and soil  water content in soybean would be extracted from the wheat model.
        >
        >I wonder if there is a program that allows for this models interaction???
        >
        >Regards
        >
        >Juan Pablo Monzon
        >
        >ARGENTINA