Spatio-temporal variation of wheat and silage maize water requirement using CGMS model

F. Sargordi; B. Farhadi Bansouleh; M.A. Sharifi; H. Van Keulen

Spatio-temporal variation of wheat and silage maize water requirement using CGMS model

Publish place: International Journal of Plant Production، Vol: 7، Issue: 2

Publish Year: 1392

Type: Journal paper

Language: English

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Link to this Paper:

https://civilica.com/doc/939245

Document National Code:

JR_IJPPG-7-2_004

Index date: 9 October 2019

Spatio-temporal variation of wheat and silage maize water requirement using CGMS model abstract

The Crop Growth Monitoring System (CGMS) has been applied for spatial biophysical resource analysis of Borkhar & Meymeh district in Esfahan province, Iran. The potentially suitable area for agriculture in the district has been divided into 128 homogeneous land units in terms of soil (physical characteristics), weather and administrative unit. Crop parameters required in the WOFOST simulation model for winter wheat and silage maize, have been calibrated based on experimental data from the study area. The study area has been classified into three cropping calendar zones based on average annual temperature, altitude and latitude. For each zone, a sowing date has been defined for each crop as the starting point of crop growth simulation. Growth of these crops has been simulated for the potential situation in each land unit for 20 years of historical daily weather data. Daily potential evapotranspiration and irrigation requirements of each crop per land unit have been calculated in a postsimulation, on the basis of model outputs. Outputs of the model are crop yield (marketable yield and total biomass) and irrigation requirements per decade. Spatial and temporal variation in irrigation requirements has been analyzed. The temporal variation in crop water requirements is larger than the spati3al variation.

Spatio-temporal variation of wheat and silage maize water requirement using CGMS model Keywords:

Crop growth simulation , Spatial yield analysis , Potential yield , Waterlimited yield , water requirement , CGMS , WOFOST

Spatio-temporal variation of wheat and silage maize water requirement using CGMS model authors

F. Sargordi

Academic member of water engineering department, Razi University, Kermanshah, Iran.PhD student, ITC faculty, University of Twente, the Netherlands.

B. Farhadi Bansouleh

Assistant professor, water engineering department, Razi University, Kermanshah, Iran

M.A. Sharifi

Associate professor, ITC faculty, University of Twente, the Netherlands

H. Van Keulen

Professor, Plant Production Systems Group, Wageningen University, the Netherlands