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Paper Information

Journal:   IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE   2007 , Volume 1 , Number 2; Page(s) 107 To 118.
 
Paper: 

SWAP MODEL ASSESSMENT FOR SIMULATING SUGAR BEET YIELD UNDER DIFFERENT IRRIGATION WATER QUANTITIES AND QUALITIES

 
 
Author(s):  KHANI GHARIEH GAPI M., DAVARI KAMRAN, ALIZADEH AMIN, HASHEMINIA SEYED MAJID, ZOU ALFAGHARAN A.
 
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Abstract: 

A field experiment was conducted during 2007 growing season at the khorassanAgl1cultural Research Center (Torogh Station). In order to achieve different water and salinity gradient in the field, two perpendicular laterals (Line Sources) were used. On lateral applied non? Saline water (1dS/m) and the other one applied saline water (6dS/m) with 3 sprinklers on each lateral. A total of 196 catch cans were placed in the center of 2x2 plots. After each irrigation the amount of water and its salinity were measured. The model simulated the maximum yield when 950 mm water was applied. This was verified by field results.
However, the model in general simulated yield 10% less than what was obtained under field conditions (RMSE =10ton/ha). The Hest also showed that there is not a significant difference between sugar beet yield and the one predicted by the model.
Analysis of yield data also indicated that the production of sugar beet is not influenced by water or soil salinity. The results of SWAP model showed the same trend. In general, SWAP model was found to be a useful tool in predicting yield under different irrigation regimes.

 
Keyword(s): LINE SOURCE IRRIGATION SYSTEM, SUGAR BEET, SALINITY, YIELD, SWAP MODEL
 
References: 
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