Hello Brian,

Thank you for your quick suggestion. I tried simulations as you suggested,
but another problem: no of runs in fallow is more than that in winter wheat.


(cropping system)
|____year1______|____year2______|____year3______|
          Fallow---------->wheat------>
Weather record: 1951-60
 (e.g. 1)
In Simulation Control: No of simulation years = 3, Replication = 1
 => no of runs in fallow was 2, but that in winter wheat was 1.
 => Error "run-time error F6501: READ (GREYF.ILE) - end of file encountered"
(e.g. 2)
In Simulation Control: No of simulation years = 6, Replication = 2
 => no of runs in fallow was 5, but that in winter wheat was 1
 => Error "run-time error F6501: READ (GREYF.ILE) - end of file encountered"

Further, when I ran a default file with 30-year simulations and 15
replications, EBAF1101.SQX (maize-fallow with no N), 60-year simulations and
30 replications (30 times for maize and 30 time for fallow in this case)
were actually conducted and the simulation loop became endless: After
60-year simulations, the simulation returned to the beginning and started
again. Something wrong with my computer?

Best,

Hiroshi Hasegawa

>It looks like you ran out of weather.  The program used all the dates in
>the LTRA5160.WTH file then looked for the next file which would be called
>LTRA5260.WTH.
>
>The most likely reason is you have no "harvest" date for the fallow
>crop.  You have the simulation set to harvest the fallow at maturity, but
>the fallow crop can never mature.
>
>The way sequence occurs is that one crop can not be planted till the last
>crop is done, in this case the fallow crop can never be done.  Try changing
>fallow to harvest at a reported date and set the harvest date to a day or
>two before you plant the winter wheat.