Abstract
In recent years, use of drip irrigation has been increased for many products, in a wide range of soil textures and structures. So far, any model has not been provided for distribution of potassium in the soil during irrigation. The purpose of this, research is modeling distribution of potassium in the soil, under drip irrigation.
Highlights
In recent years the use of drip irrigation has been increased for many products and in a wide range of soil textures and structures
The development of the recent model allows us to estimate the concentration of potassium ions around the plant root.The objective of this study is providing general relationship for the distribution of potassium in the soil in pulsed and continuous drip irrigation system
Potassium concentration is a function of initial moisture content of soil, initial potassium of soil, hydraulic conductivity of soil and water volume in the soil and flow rate of dripper
Summary
In recent years the use of drip irrigation has been increased for many products and in a wide range of soil textures and structures. Et al [1] proposed a mathematical model to simulate the absorption of potassium from the soil by plants. The simulation was based on ion transfer from the soil to the plant roots by mass flow and absorption of nutrients from the soil solution by plant roots. Comparison of the measured and simulated values by hydrous model showed that in under continuous irrigation with low rates in soil without plant, large phosphorus in the soil was available. Et al [3] studied the distribution of water and nitrate in the layered soil. The results showed that the distribution of wetting front and nitrate depended on thickness of layers of soil and the flow rate of Accepted: March 07, 2020
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