Abstarct: After nitrogen, phosphorous is the second most important macronutrient needed in the plants and plays a critical role in plants’ energy production and transfer. High fraction of applied phosphorous (more than %80) is stabilized in alkaline and calcareous soil via interaction with Mg and Ca ions; in acidic soils, it is stabilized due to interaction with Fe and Al ions. Unplanned application of phosphorous fertilizers has no effect on plant yield increase but it causes impairments in plant nutrition, and so results in yield decrease. Chloride-LDH material was synthesized through co-precipitation. Kinetic tests including equilibrium time, optimum speed, optimum pH and optimum adsorbent dosage were carried out. Phosphate adsorption isotherms were obtained for its adsorption by LDH, soil and a combination of soil and LDH. In order to examine LDH capacity for adsorption and maintenance of phosphate ion and its effect on soybean cropping, an experiment was designed with one factor including 6 different treatments. These six treatments include one control without LDH and fertilizer and five treatments with soil and LDH, soil and di-ammonium phosphate, soil and triple superphosphate, soil and LDH and di-ammonium phosphate, soil and LDH and triple superphosphate respectively. This investigation was carried out in the format of completely randomized design as a factorial test with three replicates. Results of isotherm tests indicates that the process of phosphate adsorption by soil, LDH, and the mixture of soil and LDH corresponds with linear model of Langmuir isotherm. The maximum adsorption capacity of soil, soil and LDH mixture, and LDH were 2.79, 116.27 and 384.61 mg/g, respectively. Statistically, except stem diameter, all the other studied growth properties of soybean crops were improved significantly at the significance levels of 1% The treatment with the best crop yield, was the mixture of soil and LDH and triple superphosphate.