Advanced Journal of Agricultural Research ISSN: 2367-9816 Vol. 3(1), pp. 089-097, November, 2015.  © Advanced Scholars Journals

 Full length Research paper

Numerical Modeling of Phosphate Movement through the Sandy Loamy Clayey Soil by CTRAN/W Simulations

Imran Arshad

Agriculture Engineer, Star Services LLC, Al Muroor Road – Western Region of Abu Dhabi, United Arab Emirates (UAE),

E-mail: [email protected]

Accepted 5 November, 2015

Abstract 

In the present research work water flow and fertilizer (phosphate) movement analysis through sandy loamy clayey soil has been computed by using the slave program of Geo-Slope software i.e. SEEP/W and CTRAN/W respectively. The simulation results obtained from the SEEP/W program revealed that the overall average water flow occurs in the subsurface region throughout the one year study is of the order 8.475 x 10^-5 ft³/sec/ft (0.00239 LPS) respectively. Likewise, by using CTRAN/W program Phosphate concentration at the toe point of the drain's slope after 365 days was (1.05 gm/ft³) which conforms that the hydraulic conductivity of the soil is low, due to which the phosphate particles take a long time to reach the toe of slope. Statistical analysis of all the research data i.e. RMSE, ME, R.E, and EF to evaluate the performance of the model are found to be 21.20 gm/ft³, 16.45 gm/ft³, 1.32% and 98.12% respectively. Consequently, it is concluded that simulated values of phosphate concentration are not much different than the observed.

Keywords: Finite element modeling, Water flow, phosphate movement, advection-dispersion analysis, particle tracking analysis (PTA), SEEP/W, CTRAN/W.