Which type of earthworms are most suitable for vermicomposting?

The correct answer is Epigeic.

Key Points

• The most common type of earthworm used in vermicomposting is the epigeic earthworm, which can withstand a wide range of environmental conditions (such as temperature and moisture) and consume enormous volumes of organic waste per day.
• These earthworm species are typically found in topsoil, which contains a variety of microorganisms and organic debris.
• They make good candidates for vermicomposting because of their short lifespans, rapid rate of reproduction, and ease of handling.
• 80-90% of the earthworms commercially raised for vermicomposting come from two epigeic species: Eisenia fetida (redworm) and Eisenia andrei.
• These typical composting species are categorised as nonburrowing varieties of earthworms since they do not dig deeply into the soil.
• They can thrive on mounds of manure or rotting organic matter.
• Due to their quicker activity in converting organic wastes into vermicompost, nonburrowing earthworm varieties are more commonly used in vermicomposting than burrowing types.
• They reside at or near the soil's surface and feed on human waste, decaying plant roots, and leaf litter.

Therefore, the correct answer is epigeic.