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Paper Information

Journal:   IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES   2002 , Volume 16 , Number 1; Page(s) 0 To 0.
 
Paper: 

LAND SUITABILITY EVALUATION IN PIRANSHAHR FOR WHEAT, SUGARBEET, AND ALFALFA, USING PARAMETRIC METHODS

 
 
Author(s):  GHAEMIAN N., BARZEGAR A., MAHMOUDI S., AMMARI P.
 
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Abstract: 
Land suitability evaluation has been determined for irrigated wheat, sugarbeet and alfalfa in an area about 5600 ha in Piranshahr region in West Azarbaijan Province. In order to have more reliable soil data, particularity to control the old soil map of the area, a new soil survey was carried out in the area. Soils were classified based on soil taxonomy (1998) and five families and nine phases were identified.
Climatic data from Piranshahr synoptic meteorological station have been used for climate evaluation of crops.
Based on yield coverage and climatic conditions, wheat, sugarbeet and alfalfa have been considered and compared in the present land suitability evaluation on the basis of irrigated agricultural system. In this region, the most important limiting land characteristics have appeared to be topography and flooding.
In surveyed area, the climatic classes are suitable (S1) for wheat and sugarbeet and moderately suitable (S2) for alfalfa. Analysis of rainfall and ETO data reveals that the growing period is about 112 days, starting on November 20 until July 11.
Comparing the two parametric methods (i.e. storie and square root methods) for determination of land indexes for three crops, in all methods the land indexes for wheat was always higher than those for sugarbeet and alfalfa, the square root method was considered to be more realistic for land suitability evaluation in the studied areas
 
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