Knowra Compost Compost Compost is decomposed organic matter used to enrich soil and improve its structure. It is produced as microorganisms and other decomposers break down materials such as plant residues, food scraps, and manure.
Decomposition : The breakdown of organic matter into simpler substances by physical, chemical, or biological processes. Microorganisms drive the decomposition that turns compost feedstocks into stable organic matter.
Soil amendment : A material added to soil to improve its physical, chemical, or biological properties. Compost is used chiefly as an amendment to improve soil conditions.
Organic matter : Carbon-containing material derived from living organisms or their remains. Compost consists chiefly of organic matter transformed by decomposition.
Mulch : A layer of material spread over soil to conserve moisture, suppress weeds, or protect the surface. Mulch usually remains on the soil surface, whereas compost is commonly incorporated or used as an amendment.
Landfill : An engineered site where waste is disposed of by burial and managed containment. Composting diverts suitable organic material from disposal, where its breakdown can generate methane.
Composting : The managed biological breakdown of organic materials into a soil amendment. It describes the process that produces compost.
Soil structure : The arrangement of soil particles into aggregates and the pores between them. Compost can help form stable aggregates and improve pore space.
Food waste : Edible or inedible food discarded from households, businesses, and food production. It is a common compost feedstock, though collection systems and methods affect what is accepted.
Biochar : A carbon-rich material made by heating biomass with limited oxygen. Biochar is produced by thermal conversion, not by the biological decomposition that makes compost.
Methane : A hydrocarbon gas that is a potent greenhouse gas and a combustible fuel. Poorly aerated organic waste can produce methane, while well-managed composting limits anaerobic conditions.
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