STERILIZATION OF RICE STRAW IN MUSHROOM CULTIVATION

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STERILIZATION OF RICE STRAW MUSHROOM


We can grow mushrooms in several mediums such as -Rice straw , Cotton waste , Banana leaves , Sugarcane trash , Wheat , Water hyacinth etc .

 

RICE STRAW MUSHROOM  :

Rice straw mushroom ( Volvariella volvacea ) has distinct flavour , pleasant test and very rich in protein content .

It is considered as one of the easiest way to cultivate mushrooms due to it's short production duration .


TYPES OF STERILIZATION 

  1. Hot water Sterilization 
  2. Cold water Sterilization
  3. Autoclaving
  4. Formaldehyde treatment
  5. Bavistin treatment 
Among these Cold water Sterilization is the easiest to do .

REQUIREMENTS FOR COLD WATER STERILIZATION

  1. Tank 
  2. Rice straw ( 1ft or 1.5ft )
  3. Clean water
  4. Lime 
PROCEDURE:

  1. Tie 5-6 bundles together so that rice straw bundles  won't float in the water  .
  2. Fill the tank ( size of tank may vary according to the straw amount , for 50-60 bundles a tank of 5ft × 2ft will be enough ) with fresh and clean water. 
  3. Add lime ( hydrated lime) to water ( 1-2g for 1 litre ).
  4. Mix it well , so that there will be even distribution of lime .
  5. Place the rice straw bundles in the tank in such a way that straws get enough of water. 
  6. After placing the rice straw you can adjust the volume of water ( if required ) by adding more water .
  7. Let the straw soak water  for 12-18 hrs ( in summer season ) and 8-10 hrs ( in rainy season ).
  8. After completion of soaking remove bundles from the tank and place the bundles near a wall making right angle to ground , so that excess water will drain out from the rice straw .
  9. Leave it for 1-2 hrs until the moisture in Straw is 60-70% ( the straw will be moist but no droplets will fall from it ).
  10. Once drainage is complete the substratum is ready for inoculation of mushroom spawn .
WHY WE USE LIME :

  1. Lime changes the pH of water .
  2. By adding lime we make the water alkaline which leads to killing of the contaminants.
  3. Use hydrated lime - Ca(OH)2 which is low in magnesium content .
  4. During application of lime use gloves , mask for safety issues .


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