Dear sir
This is the comment of last email

1) In DSSAT model for N load , only NBAL.OUT and Summary.OUT are
explained.NLCC is found in N bal.out file not in NITROGEN.OUT.

2) Answer is confusing every time, so which one is fact.

3) You asked  about the Total nitrogen and ammonium.In this regards,Total
nitrogen is sum of Nitrate N, Ammonium N and Organic N. So difference
between nitrate and total nitrogen may be ammonium or organic N.

waiting appropriate suggestion


Bipin


----- Original Message -----
From: "Gijsman, Arjan J." <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, February 06, 2002 1:44 AM
Subject: Re: About nitrate leaching


> Hi Bipin,
>
> In my email to the DSSAT Listserver of last week (Jan 30), I wrote some
> about the leaching and soil-N-dynamics option of DSSAT.
>
> You wondered which variables indicate the leaching. Almost all variables
in
> the *.OUT files are explained in the DETAIL.CDE and DATA.CDE files in the
> DSSAT root directory. Leaching can be found as NLCC in the NITROGEN.OUT
> file, as NLCM in the SUMMARY.OUT file, or as 'Leached NO3' in the NBAL.OUT
> file. Please keep in mind what I wrote in my last-week's email, as it-N
> sometimes gives surprising results.
>
> In you earlier email you wrote that "measured value=3.63 kg/ha for nitrate
> and 18.2 kg/ha for Total nitrogen". Does this mean that the difference
> between total-N leached and nitrate leached is ammonium? Seems rather
> unlikely, as ammonium is sorbed onto the soil particles much stronger than
> nitrate. DSSAT simulates only nitrate leaching, and has an option of
reduced
> nitrate leaching due to adsorption (which happens e.g. with some
> highly-weathered soils); for this option, see Bowen,W.T., Jones,J.W.,
> Carsky,R.J. & Quintana,J.O. (1993) Evaluation of the nitrogen submodel of
> CERES-maize following legume green manure incorporation. Agron. Journal
> 85:153-159. I do not know whether this also is activated in the Rice
model.
>
>
> Hope this helps.
>
> Arjan Gijsman
>
>
> -----Original Message-----
> From: Bipin Pathak [mailto:[log in to unmask]]
> Sent: Thursday, January 31, 2002 9:07 PM
> To: [log in to unmask]
> Subject: Re: About nitrate leaching
>
>
> Dear sir
>
> Could you tell me who are export in N?. No  body answered me about nitrate
> leaching.I checked both file(RIN and Nbal) thoroughly but unable to find
> Nitrate leaching.
> I am waiting your response.
>
> Thanks for your prompt cooperation
>
> Bipin
>
>
>
> ----- Original Message -----
> From: Brian Baer <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, January 30, 2002 11:20 PM
> Subject: Re: About nitrate leaching
>
>
> > Bipin,
> >
> > I'm no expert on N.  I was just pointing out that there are two N output
> > file.  The .RIN file that you have been looking at where N leached is in
> > the NLCC column, and the NBal.out file where there is one line for the
> > total N leached as well as other lines for different source and loses of
> > N.  This second file might help you find out where your N is going that
> you
> > expect to be leached.
> >
> > You are running flooded rice which means there is the whole question of
> > flood water chemistry.  That is a big can of worms that I have no
> > experience with.  Hopefully there are others on this list that can be of
> > more help in this area.
> >
> > Good luck.
> >
> > Brian
> >
> > >Thanks for kind cooperation
> > >I read the N balance.out file. Here I have two question. First,  which
> term
> > >is nitrate leaching, and second why N leached (NLCC:1.1 Kg/ha)  is very
> low
> > >in comparison to measured value( 18.2 kg/ha).I need help to justify
> it.Can I
> > >send  to you my N balance .out file ? Please tell me how can I send
this
> > >file through DSSATserver.I tried many times but unable to send.I if you
> need
> > >other file , please write me.
> >
> >
>
>