Fertilizers

The chemical formula of pyrite, also known as fool's gold, used as a soil improver, is FeS . Pyrite is an iron sulfide mineral, often added to soils to improve their sulfur content.

In urea, nitrogen is present in the amide form, specifically as part of the -NH group in the urea molecule. Urea is a nitrogen-rich compound commonly used in fertilizers.

Ground nut cake is considered a concentrated organic manure because it is rich in nutrients such as phosphorus and nitrogen. It is produced after extracting oil from groundnuts, and it has a high nutrient content compared to other organic manures like compost or FYM.

Single super phosphate (SSP) is a widely used fertilizer that provides phosphorus (P), sulfur (S), and calcium (Ca). It is an important source of phosphate in the soil, and it also supplies sulfur, which is essential for plant growth, and calcium for improving soil structure.