Phosphorus is an important macro-mineral to all forms of life and about 80-85% of total P in the animal body is present as insoluble salts in the skeleton. In cattle’s, approximately 30% of phosphorus is excreted through the milk. Cattles need to be provided with adequate amounts of phosphorus to meet their nutritional needs. Phosphorus deficiencies are seen especially in ruminants that graze forages grown on soils very low in phosphorus. Phosphorus is important for optimum Milk production and reproduction in Dairy Cattles. Cattle breeders should ensure balanced use of phosphorus fertilizers in the soil while cultivating green fodder so as to increase the milk and meat production capacity of cattle.