 CROPWAT 8.0 for Windows is
a computer program for the calculation of
crop water requirements and irrigation requirements
based on soil, climate and crop data. In
addition, the program allows the development
of irrigation schedules for different management
conditions and the calculation of scheme
water supply for varying crop patterns. CROPWAT
8.0 can also be used to evaluate farmers’ irrigation
practices and to estimate crop performance
under both rainfed and irrigated conditions.
All calculation procedures used in CROPWAT
8.0 are based on the two FAO publications
of the Irrigation and Drainage Series, namely,
No. 56 "Crop
Evapotranspiration - Guidelines for computing
crop water requirements” and
No. 33 titled "Yield
response to water".
As a starting point, and only to be used when local data are not available,
CROPWAT 8.0 includes standard crop and soil data. When local data
are available, these data files can be easily modified or new ones can be created.
Likewise, if local climatic data are not available, these can be obtained for
over 5,000 stations worldwide from CLIMWAT, the associated climatic database.
The development of irrigation schedules in CROPWAT 8.0 is based on a daily
soil-water balance using various user-defined options for water supply and
irrigation management conditions. Scheme water supply is calculated according
to the cropping pattern defined by the user, which can include up to 20 crops.
CROPWAT 8.0 is a Windows program based on the previous DOS versions. Apart
from a completely redesigned user interface, CROPWAT 8.0 for Windows includes
a host of updated and new features, including:
- monthly, decade and daily input of climatic data for calculation
of reference evapotranspiration (ETo)
- backward compatibility to allow use of data from CLIMWAT database
- possibility to estimate climatic data in the absence of measured values
- decade and daily calculation of crop water requirements based
on updated calculation algorithms including adjustment of crop-coefficient
values
- calculation of crop water requirements and irrigation scheduling for
paddy & upland rice, using a newly developed procedure to calculate
water requirements including the land preparation period
- interactive user adjustable irrigation schedules
- daily soil water balance output tables
- easy saving and retrieval of sessions and of user-defined irrigation schedules
- graphical presentations of input data, crop water requirements and irrigation
schedules
- easy import/export of data and graphics through clipboard or ASCII text
files
- extensive printing routines, supporting all windows-based printers
- context-sensitive help system
- Multilingual interface and help system: English, Spanish, French and Russian
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