Abstract
A rapid increase in industrialization and urbanization and population growth requires expansion of agricultural area for food security and raise the importance of soil health assessment to ensure protection and sustainable use of agricultural lands according to their potential. For this purpose, use of digital soil mapping for the analysis of key physicochemical characteristics has been widely used. The GIS enabled the mapping of extensive areas. The purpose of this study is the spatial analysis of soil fertility indicators i.e., soil reaction (pH), Electrical Conductivity (EC), organic matter (OM), micro-macro {Zinc (Zn), Copper (Cu), Iron (Fe), Manganese (Mn), Boron (B)} nutrients in Khanewal districts using GIS-approaches. The result of study shows that soil pH and EC are normal for crop production while almost 95% of samples show low OM, 100% have low available phosphorous content, 33.3% have low K content, 71% have low Fe and 83% have low B content. Therefore, it was recommended that, to continuously incorporate farmyard manure, green manure, and crop residues into the soil over an extended period to address the organic matter deficiency. P, K, Fe and B deficient area should be fertilized with variable rate of respective fertilizer and soil should be periodically tested. It was recommended that the central parts of Khanewal district lands are cultivable as compared to boarder areas.
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