Evaluation of the Fertility Status of some Soil Series of the North Tikrit Agricultural Project using Geospatial Technologies

Abstract

Abstract The survey aimed to study the fertility status of some of the soil chains of the North Tikrit Agricultural Project using geospatial technologies. Part of the project area (246.555) km2 was selected on the basis of heterogeneity in soil characteristics, the productive status of agricultural crops and the area formed by the soil series. as the study area is located at longitudes (43 °27′ 30) and (43°12′30) east and two latitudes (35°15′0) and (35°0′0′) north. Which included five soil chains and then obtained 44 soil models from the surface layer 0 - 30 cm distributed over the soil series and recorded some observations and field information. Physical qualities (Soil texture, bulk density), chemical qualities (degree of soil reaction, electrical conductivity, calcium carbonate, gypsum, cation exchange capacity and organic matter) and fertility qualities (total, ready, dissolved, total phosphorus, ready, dissolved and dissolved potassium) were estimated and analyzed. Its maps were mapped according to the technique of spatial derivation of the inverted distance median (IWD) using ArcGIS Ver.10.1, as well as monitoring changes to the vegetation and soil state of the project soil using space visualizations acquired on May 15 and 25 of 2002 and respectively 2022. The results reached.