Abstract
The study area is located in Wasit province, represented in Al-Souera about 60km south of Baghdad (464273.369- 463318.982) East and (3643443.734 - 3643798.3013) North. GIS technology was used to predict some of soil fertility parameters by using Kriging Application and to produce a final fertility map by standard method of assessment, building a database of soil characteristics in GIS environmental. The results showed: There were four classes of fertility assessment in the study area, very fertile soil class was not found because the study area did not contain the ideal state of the indicators used in soil fertility assessment. The fertile soil class in the study area was 7.53% from the total area were silty clay loam texture, high organic matter, neutral pH, moderately CaCO3, high CEC, high contain NPK, low ECe , and low ESP. The moderately fertile soil class in the study area was 51.99 % from the total area were silty clay loam texture, low organic matter, neutral pH, high CaCO3, high CEC, high contain NPK, low ECe, and low ESP. The slightly fertile soil class in the study area was 39.61 % from the total area were silty clay loam texture, moderately organic matter, neutral pH, high CaCO3, high CEC, high contain NPK, moderately ECe, and low ESP. The non-fertile soil class in the study area was 0.93% from study area. The soil productivity digresses because of low organic matter, high CaCO3, and high ECe.
Highlights
Fertility assessment is the process of estimation soil susceptibility in processing plant nutrients required for optimal growth
In view of the danger of diminishing water resources in large areas of the world, including Iraq, the urgent demand for increased agricultural production to avoid global food shortages and the serious climate change facing humanity, there has been a need to use some modern means and assist in the implementation of natural resource inventories, And geographic information systems (GIS) applications (8). This progress has helped to achieve the utmost accuracy in obtaining information sent from satellites and solving many issues related to land and natural conditions, through the amount of information provided and processed digital processing by high technology, GIS was used to predict the soil content of available phosphorus by Kriging application (6)
That the adoption of these technologies as based on a high degree of compatibility with field surveys and because the study of soil fertility in the Iraqi soil is limited to specific site measurements and narrow is the farms of agricultural research centers or land belonging to the faculties of agriculture will be adopted for remote sensing and information systems To prepare soil fertility maps as well as to diagnose fertility sites (1)
Summary
Fertility assessment is the process of estimation soil susceptibility in processing plant nutrients required for optimal growth. In view of the danger of diminishing water resources in large areas of the world, including Iraq, the urgent demand for increased agricultural production to avoid global food shortages and the serious climate change facing humanity, there has been a need to use some modern means and assist in the implementation of natural resource inventories, And GIS applications (8) This progress has helped to achieve the utmost accuracy in obtaining information sent from satellites and solving many issues related to land and natural conditions, through the amount of information provided and processed digital processing by high technology, GIS was used to predict the soil content of available phosphorus by Kriging application (6).
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