[TacticalMalice]

Most fungal spores have only moderate heat resistance and die at temperatures below 80 degrees Celsius.

Substrate sterilization with a pressure cooker prevents bacterial growth and inactivates fungal virus that may ruin your harvest.

[davidhowlett]

I think you mean above 80 degrees Celsius

[TacticalMalice]

No, I specifically meant below. I should have written " ... die at temperatures even below 80 degrees Celsius".