If a fertilizer ratio is 5-10-15, what element does the number 10 represent?

The fertilizer ratio of 5-10-15 refers to the relative amounts of three essential nutrients contained in the fertilizer, which are nitrogen, phosphorus, and potassium. Each number corresponds to the percentage by weight of the respective nutrient in that order: nitrogen, phosphorus, and potassium.

In this ratio, the number 10 specifically represents the percentage of phosphorus. Phosphorus is crucial for root development, flower and fruit production, and overall plant health. Unlike nitrogen, which is primarily responsible for leaf growth, phosphorus plays a pivotal role in energy transfer and photosynthesis within plants.

Identifying the elements associated with fertilizer ratios is fundamental in agricultural practices, as it helps in selecting the appropriate fertilizers to meet the nutritional needs of specific crops. Therefore, understanding the role and significance of phosphorus in plant growth is essential for effectively managing soil fertility and crop productivity.