Vermicompost (vermi-compost) is the product of the decomposition process using various species of worms, usually red wigglers, white worms, and other earthworms, to create a mixture of decomposing vegetable or food waste, bedding materials, and vermicast. This process is called vermicomposting, while the rearing of worms for this purpose is called vermiculture.Vermicompost contains water-soluble nutrients and is an excellent, nutrient-rich organic fertilizer and soil conditioner.

Rock phosphate is a natural mineral fertilizer that is composed of the mineral apatite, which is a group of phosphate minerals. It is mined from deposits of sedimentary rocks that contain high concentrations of these minerals. Rock phosphate is commonly used as a source of phosphorus for plant growth and development. Phosphorus is an essential nutrient that is required for the growth and development of plants. It is involved in many important processes such as photosynthesis, energy transfer, and the formation of nucleic acids.