What does the "% Water Insoluble Nitrogen" refer to?

The term "% Water Insoluble Nitrogen" specifically refers to the percentage of nitrogen present in a fertilizer that does not dissolve in water. This is significant in the context of fertilizer application because nitrogen is a key nutrient for plants, and its availability in the soil affects plant growth and productivity. When nitrogen is water-insoluble, it indicates that a portion of the nitrogen in the fertilizer will remain in the soil for a longer period, reducing the risk of leaching and thereby ensuring a more sustained availability of nitrogen for plant uptake over time.

This property is particularly valuable for managing nutrient supply effectively, as it can help in timing fertilizer applications and minimizing nutrient losses. It contributes to a better understanding of how a fertilizer will perform under different environmental conditions. Understanding water insolubility is crucial for making informed choices regarding fertilizer types and their applications in agricultural practices.