Agro-ecological zoning for cultivation of Alfalfa (Medicago sativa L.) using RS and GIS
Journal Title: Scientia Agriculturae - Year 2015, Vol 9, Issue 2
Abstract
Agro-ecological zoning is one of the effective tools for identifying land resources and assign them to the best and most profitable forms of land productivity. In this study for Agro-ecological zoning of 16618 hectares of Qazvin province land in Iran, satellite imagery and Geographical Information System (GIS) were used. After Agro-climatic zoning (based on maps of isohyet, isothermal and length of growth period) and Agro-edaphic zoning (based on maps of soil, slope and land use) 43 Agro-ecological zoning were achieved. Then climate, soil and topographic characteristics of any zone were compared with Alfalfa requirements and land suitability classes were determined using parametric (square root) method. The results showed that studied area is highly suitable for Alfalfa cultivation based on climate requirements. In addition, soil depth and gravel percentage in the Northern part also salinity, alkalinity, lack of organic material and gypsum are major limiting factors in the Southern part of area. Potential yield of Alfalfa was calculated by using FAO method and 15031 kg per hectare was calculated. Also land production potential in each of the zones was determined. This loss of yield in compared to potential yield is due to the impact of limiting factors that by using proper management actions such as adding organic material to soil, land drainage and leaching can increase crop yield.
Authors and Affiliations
Abbas Taati, Fereydoon Sarmadian, Amin Mousavi, Asghar Rahmani
Keywords
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- EP ID EP137463
- DOI 10.15192/PSCP.SA.2015.9.2.93100
- Views 115
- Downloads 0
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