Calcium hydroxide- Chuna [Ca(OH)2 ] 900gmCalcium hydroxide, commonly known as Chuna or hydrated lime (Ca(OH)2), is a chemical compound that can be used in mushroom cultivation, particularly in the process of substrate pasteurization. When preparing mushroom substrates, pasteurization is a crucial step to eliminate harmful microorganisms and create an environment conducive to mushroom growth. Calcium hydroxide is used as an alkaline agent during pasteurization to raise the pH level of the