Compost is rich in nutrients. It is used in gardens, landscaping, horticulture, and agriculturernThe compost itself is beneficial for the land in many ways, including as a soil conditioner, a fertilizer, addition of vital humus or humic acids, and as a natural pesticide for soilrnIn ecosystems, compost is useful for erosion control, land and stream reclamation, wetland construction, and as landfill cover (see compost uses)rnOrganic ingredients intended for composting can alternatively be used to generate biogas through anaerobic digestion