Researchers and subject

Method

Results

Comparing

Claassen N, et al. (1986) verification of mathematical by simulating potassium uptake from soil.

Based on Darcy's law and the conservation of mass.

The simulation is based on the transfer of potassium from soil to the root based on mass flow and uptake by the root.

Differences in governing equations used and plant root uptake.

Chen JS, et al. (1996) Phosphorus transport during transient, unsaturated water flow in an acid sandy soil.

Based on Darcy's law under unsaturated condition.

The concentration of phosphorus in the soil solution was higher and the water flow rate was higher.

Differences in governing equations used and phosphorus and potassium ions.

Ben-Gal A, et al. (2003) Phosphorus availability under continuous point source irrigation.

Simulation of Hydrus Model.

Continuous flow conditions and in low discharges large amount of phosphorus is extracted from root environment.

This research uses Richard's equations. Trend results are consistent.

Arash Mohammadbeigi (2016) Distribution of soil moisture and macro element under pulse and continuous drip irrigation with wastewater treatment.

The simulation is based on dimensional analysis.

By use of theorem of Buckingham and dimensional analysis, the model of soil moisture, potassium and phosphorus distribution in the soil was obtained.

Good agreement between them.