Benefits of Composting

Taylor, John, Lauren, Vivian

statistics:

  • Composting can reduce household waste by 30%
  • Composting can reduce soil fertilization costs by 50%
  • A small American city of 100k people creates enough waste in one year to equal three times the weight of the Statue of Liberty, roughly the equivalent of $165 billion of wasted food every year in the US.
  • Over 60% of what we put in our what we put in our landfills is organic waste
  • Composting prevented the release of 183 million tons of carbon dioxide into the air– that’s equivalent to 34 million cars taken off the road for one year
  • Over ⅓ of landfill waste is compostable

benefitting water:

  • Compost helps soak up water, slowly releasing it to plants. With enough compost in your soil, you won’t have to water as much. Also, compost applied thickly as a top dressing has some of the benefits of mulching. It will keep water from evaporating from deeper levels.
  • Composting increases the volume of water by 3 quarts per cubic foot of soil resulting in less frequent watering (this could potentially help agricultural areas experiencing drought ie California)
  • Compost helps to improve water retention in soil

benefiting fertilization:

  • Composting is a natural alternative to chemical fertilizer
  • Composting can reduce soil fertilization costs by 50%
  • Cons of Fertilization and why we should use composting as an alternative
    • Require multiple applications in one season
    • Temporary solution, doesn’t add nutrients to soil
    • Pollutes stormwater (more water treatment = increase in water cost)

benefitting the environment (CO2 Emissions):

  • Reduces methane emissions from landfills and lowers your carbon footprint
  • Food scraps in landfills generate methane, a greenhouse gas with global warming potential 84x more potent than CO2 in the short term
  • ½ inch of compost applied to rangeland sequestered the equivalent of 1 metric ton of Co2e/hectare over three years
  • Composting prevented the release of 183 million tons of carbon dioxide into the air- that’s equivalent to 34 million cars taken off the road for one year

benefitting human health:

  • Composting can have an effect on physical health as well — we can ingest molecules of harmful substances such as fertilizer and landfill leachate
  • Composting can make us more aware of what we eat and how that food is produces
  • source: Davies, S. (2011). Composting Inside and Out : The Comprehensive Guide to Reusing Trash, Saving Money and Enjoying the Benefits of Organic Gardening. Cincinnati, Ohio: Krause Publications.

benefiting agriculture:

  • Composting promotes higher crop yields
  • Compost can be used to remediate soils contaminated by hazardous waste in a cost effective manner
  • On a per-ton basis, making compost alone employs 2x more workers than landfills and 4x more than incinerators
  • One study demonstrated in over five years, a natural (compost) turf program resulted in 25% savings when compared to a chemical one (SOURCE: GrassRootsInfo.org)