Derek and others:

Updated information for Experimental design and data collection for minimum
data sets can be found in Volume 4 of the DSSAT manuals.

The model does not use any of the information included in the general
section; it is only used to document your experiment.  The current format
limit for plot area per rep is F6.1.  Unfortunately your format does not
fit.  We will fix this in the next version.  Although you might only have
one treatment, I hope that you replicated your experiment.

Regards,

Gerrit


At 12:58 PM 1/23/02 -0700, you wrote:
>Hello,
>I am entering the plot information for one of my experiments.  I was
>reading from "Experimental Design and Data Collection Procedures for
>IBSNAT: The minimum data set for systems analysis and crop simulation".
>IBSNAT Technical Report 1 Third Edition, Revised 1988.  This document
>states that IBSNAT assumes that collaborators will use a randomized
>complete block design.  The data I have for my fields does not follow
>this.  For example one field has only one treatment for the whole
>field.  When I try to enter plot area per rep (80812m2) it says invalid
>plot area.  Other experiments have varying degrees of fertilizer
>application but the varying fertilizer rates are not systematic.  I guess
>my questions are as follows:
>        Is there an area limit to the size of the plot, if not why am I
> getting
>the "invalid plot area"?
>        Is it a problem if the experiment is not set up as a randomized
> complete
>block design, if so any ideas on how to get around this?
>        Is my source listed above for "Minimum data set collection" the
> most current?
>Thank you very much for any help.
>
>Derek McNamara