Dewi,

I suggest that you do a senssitivity analysis for your specific
conditions to evaluate its consistency with what farmers do now.

Best regards.

Jim Jones

Date sent:              Tue, 11 Apr 2000 14:14:12 -0700
Send reply to:          DSSAT - Crop Models and Applications <[log in to unmask]>
From:                   "Hartkamp, Dewi" <[log in to unmask]>
Subject:                DSSAT automatic planting conditions
To:                     [log in to unmask]

> Hello DSSAT users
>
> Does anyone have experience with the automatic planting routine option for
> use in modelling 'subsistence farmer/rainfed cropping systems'.
>
> E.g. a sensitivity analysis or validation against real planting conditions
> when farmers plant.
>
> Default :
> Earliest                                       -
> Latest                                         -
> Lower soil water content            40
> Uppermost soil water content   100
> Soil management depth             30
> Max Soil temp                            40
> Min  Soil temp                            10
>
> (I have put max. soil temp to 45)
>
> I am looking at farming systems in Honduras and I think that the 30 cm is
> too strict for planting.
>
> I expect that subsistence farmers wait for 2 or 3 rains and then plant.
>
> Therefor I am thinking of putting the s.m. depth to 20 cm in stead of 30 cm.
>
> However I am open to your suggestions.
> Thank you very much,
>
> Dewi Hartkamp
> CIMMYT - International Maize and Wheat Improvement Center
> Mexico



James W. Jones
Distinguished Professor
----------------------------------------------------
Agricultural & Biological Engineering Department
P.O.Box 110570
University of Florida
Gainesville, FL  32611

email:               [log in to unmask]
FAX:                 (352) 392-4092
Telephone:           (352) 392-8694
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