Product Information
System Requirements:- Personal Computer running MS-Windows
- Pentium2 with 128MB RAM minimal
- Pentium4 with 512MB RAM recommended
- CD-Rom Drive
- Hard Disk Space requirement 300MB of free space
Components:
The Cropping System Model (CSM) released with DSSAT Version 4 represents a major departure from previously released crop models in DSSAT, not in function, but in design. The computer source code for the model was restructured into a modular format in which components separate along lines of scientific discipline and are structured to allow easy replacement or addition of modules. CSM now incorporates all crops as modules using a single soil module and a single weather module. The new cropping system model now contains models of 17 crops derived from the old DSSAT CROPGRO and CERES models. The major modules are:
- Land Module
- Management Module
- Soil module - A soil water balance sub-module and two soil nitrogen / organic matter modules.
- Weather module - Reads or generates daily weather data
- Soil-Plant-Atmosphere module - Deals with competition for light and water among the soil, plants, and atmosphere
- CROPGRO plant growth module
- Grain Legumes - Soybean, peanut, dry bean, chickpea, cowpea, velvet bean, and faba bean
- Vegetables - Pepper, cabbage, tomato
- Grasses – Bahia, brachiaria
- CERES Plant Growth Module
- Grain Cereals -Rice, maize, millet, sorghum, wheat, and barley
- SUBSTOR Plant Growth Module
- Potato
A SOM–residue module from the CENTURY model was incorporated in the DSSAT crop simulation models, and a residue layer was added on top of the soil. Modifications were also made in the senescence module of CROPGRO, a model within DSSAT, so that senesced material is now added daily to the soil. By incorporating the CENTURY SOM–residue module, DSSAT crop simulation models have become more suitable for simulating low-input systems and conducting long-term sustainability analyses.
DSSAT version 4 allows consistent access to the crop models, data, input and output tools, and analysis programs. The hierarchy is commodity-based within a tree structure where model inputs can be created and results analyzed. The basic menu structure of DSSAT version 3.5 is maintained for backward compatibility.
A suite of tools is supplied for data management and analysis. XBuild is used to create and modify experiment files (X-Files). The suite of tools includes (but is not limited to) ATCreate (observed data), Weatherman (Weather data), GBuild (Graphing of outputs), and SBuild (Soil database).
In addition to the suite of applications installed with DSSAT, a number of accessory tools can be installed. These tools (ICSim, Stats, EZ Grapher and others) are applications that access the data in DSSAT for applications designed by the developers. The functionality exists for users to dynamically add their own application to the DSSAT toolbar.
Contact Information:
ICASA
2440 Campus Road, Box 527
Honolulu, Hawaii 96822
Internet: ICASA@icasa.net
Telephone: 808-956-2713
Fax: 808-956-2711
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