A tetra vermi bed and a process for composting agricultural waste The conventional composting apparatus are mostly bulky, posing problems in transportation to sites, storing agricultural waste. This invention addresses the shortcomings by construction of composting bed of multiple layers of LDPE and HDPE substrate. The tetra vermin bed propagates production of worms and yields manure, which is easy to handle and to transport in bags. The tetra vermin bed is easy to install and to dismantle for operation at multiple sites, storing agricultural waste.