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Paper Information

Journal:   JOURNAL OF AGRICULTURAL SCIENCE (UNIVERSITY OF TABRIZ)   2006 , Volume 16 , Number 3; Page(s) 67 To 81.
 
Paper: 

QUALITATIVE EVALUATION OF LAND SUITABILITY IN YAKHFARVAZAN REGION OF AHAR CITY FOR SOME OF THE CURRENT CULTIVATED CROPS

 
 
Author(s):  MOMTAZ H.R.*, JAFARZADEH A.A., NEYSHABOURI M.R.
 
* DEPARTMENT OF SOIL SCIENCE, FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ, TABRIZ, IRAN
 
Abstract: 

In the present study land suitability evaluation (qualitative classification) was carried out for wheat, barley, safflower, bean, soybean and potato production in an area of 385 ha at Yakhfarvazan region of Ahar in East Azarbaijan, Iran. Soil data was prepared by studding 22 soil profiles and agurs and the regional information, including climatic and agronomic data were collected. Simple limitation method, limitation method regarding number and intensity, and parametric methods (Storie and Square Root) were employed and land suitability classes were determined for 18 land units. In simple limitation and limitation method regarding number and intensity almost 42.4% of area are moderately suitable (S2), 37.2% are marginally suitable (S2) and 20.4% are unsuitable (N2) for wheat and barley production. Thirteen percent of the area is moderately suitable, 44.2% is marginally suitable and 42.8% is unsuitable for safflower. For bean production 18.8% of the area is moderately suitable, 17.5% is marginally suitable and 63.7% is unsitable whereas 13% is moderately suitable, 36.7% is marginally suitable, and 50.3% is actually unsuitable for soybean, and finally 31% of the area is moderately suitable, 16.7% is marginally suitable, 9.5% is actually unsuitable and potentially suitable, and 42.8% is unsuitable for potato production. In Storie method almost 55.5% of the area is marginally suitable and 44.5% is unsuitable for wheat. For barley, 9.7% is moderately suitable, 56.3% is marginally suitable, and 34% is unsuitable. For safflower, 22.7% is marginally suitable and 77.3% is unsuitable. For bean, 18.8% is marginally suitable, and 81.2% is unsuitable. For soyban, 14.9% is marginally suitable and 85.1% is unsuitable and also for potato, 16.6% is marginally suitable and 83.4% is unsuitable. In square root method, almost 24.4% of the area is S2, 55.2% is S3, and 20.4% is N for wheat, 42.4% is S2, 37.2% is S3, and 20.4% is N for barley, 10.8% is S2,46.4% is S3, and 42.8% is N for safflower, 12.7% is S2,6.1% is S3,and 81.2% is N for bean, 10.8% is S2, 11.9% is S3, and 77.3% is N for soybean, and for potato, 4.7% is S2, 26.3% is S3, and 69% is N. Based on the results (especially those from the square root method), the priority of the studied area turned to be barley and wheat (first) bean, safflower, soybean (second), and potato (third). Among the methods, square root was more realistic in the present study.

 
Keyword(s): DIFFERENT CROP YIELDS, LIMITATION METHOD REGARDING NUMBER AND INTENSITY, PARAMETRIC METHOD, QUALITATIVE EVALUATION OF LAND SUITABILITY, SIMPLE LIMITATION MEHOD
 
References: 
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