1. General Model Information
Name: Spring WHEAT
Main medium: air+terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: not specified
Keywords: crop growth, spring wheat, mechanistic, salinity
US Salinity Lab4500
Fax : 909 369-4818
SWHEAT (Spring WHEAT) is a version of WHEAT. SWHEAT is a mechanistic,
process oriented, point model (Baker et al., 1981). The model is design
specifically to examine the effects of salinity on crop production. Its purpose
is to predict how changes in salinity will affect spring wheat yields. The
model uses as input: daily maximum and minimum temperature, soil variables,
solar radiation, wind speed, vapor pressure and nitrogen content data. The
model provides output on dry matter production and grain yield. The model
uses daily time step over a season.
Author of the abstract:
INTERNATIONAL EARTH SCIENCE INFORMATION NETWORK)
II. Technical Information
Operating System(s): On a 486, takes 2-3 minutes
Programming Language(s): FORTRAN 77
III. Mathematical Information
Daily min/ max temperature., soil variables, (H20 content,
Daily min/ max temperature., soil variables, (H20 content,conductivity, bulk density, electroconductivity), solar radiation, wind speed, vapor pressure deficit,rain applied, N content.
Model Input Data Source: Field collected on soils. Historical climatic data. Dry matter production, grain yield. Can get nutrient content, phenological
Dry matter production, grain yield. Can get nutrient content, phenologicalcharacteristics.
Temporal Scale: Daily time step-over a season.
Baker, P., and D.E. Smika, A.L. Black, W.D. Willis andA. Bower. 1981. Winter wheat: a model for the simulation of winter wheat. AgRISTARS: YM-U2-04281/JSC-18229.
V. Further information in the World-Wide-Web
VI. Additional remarks
Global change implications:This model could be used for globalchange research to examine the effects of climate change on salinity which,may affect spring wheat production.
Last review of this document by: T. Gabele: 28. 07. 1997 -
Status of the document:
last modified by
Tobias Gabele Wed Aug 21 21:44:51 CEST 2002