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This study was conducted to test the effectiveness of using rice water as a liquid fertilizer on the growth of Omani lemon. Three questions were answered: 1. (What are the components of rice water and the active ingredients that may affect the growth of Omani lemon?) 2. (What is the effect of rice water on the growth of the Omani lemon plant in terms of length and number of leaves?) 3. (What are the soil properties of the Omani lemon plant that has been fertilized with rice water?) This research aims to study the effect of rice water when used on Omani lemons, in terms of increasing the number of leaves and length, and its effect on soil properties. Because there is, a study confirming that rice water-soaked contains various vitamins and minerals beneficial to the plant. Therefore, in this procedural research, the effect of rice water infusion on the Omani lemon plant was tested by following up on the change in the rice water plant compared to the organic fertilizer and the control plant, in terms of height and number of leaves, in addition to analyzing a sample of rice water in the laboratory. The soil properties of the rice water plant were also studied and it was concluded that the rice water soil possesses suitable properties for the growth of lemon. Omani lemon plant Experiments have proven the possibility of using rice water as a liquid fertilizer on Omani lemon, as it contributes to increasing the number of leaves and plant length with high efficiency compared to chemical fertilizer. Several experiments have been carried out in the school, and cooperation has been made with the laboratory of the College of Agricultural and Marine Sciences at Sultan University to conduct a chromatographic analysis of rice water sample.