The picture compares cultivation arrangements, not three versions of the same recipe. Oyster clusters can develop from openings in colonised bags. A common Milky method adds a casing layer after straw colonisation. Paddy Straw methods can use prepared straw beds. Each requires its own material preparation and crop management.
Before following an instruction, write its crop and method at the top of your notes. A direction about casing a Milky bed is not automatically a direction for an Oyster bag. Equally, a Button compost schedule does not describe every straw-based method.
Confirm the scientific species and supplied strain with the supplier. Common market names may cover different production choices. The illustration helps you compare arrangements; it cannot identify an unknown or wild specimen.