**8. SOC determination and model application**

The SOC behavior in the soil can be analyzed using different models [17, 18, 49]. The CENTURY soil organic matter model environment is a FORTRAN model. It is used in the plant–soil ecosystem. It is represented by C. It is a software design for nutrient dynamism in a different ecosystem. This includes grassland, forest, crop, and savannah [17, 18, 49]. The EPIC model establishes a relationship that exists between the soil and climate. It is a process-based model well-known. The Roth C-26.3 can be used to analyze soil type, temperature, moisture content, and plant cover on the turnover process. It can determine the turnover of organic carbon in non-waterlogged soil [17, 18, 49]. Some of the required parameters for analyzing SOM and SOC were weather, sowing procedures, plan of work on the different fields, fertilization etc. This information is based on different algorithms [17, 18, 49]. STIC model was also noted for a good approximation of water requirement. However, the use of multiple linear regression (MLR) was noted for its multidimensional functions [17, 18, 49]. MLR is capable of modeling soil properties after the application of organic manure. MLR can be used accomplished to the relationship between SOC stock and other soil properties in any region of the world. It can provide a relationship between liable C form, soil properties, and management practices. The use of MLR was found efficient and reliable [17, 18, 49].
