jimscott Posted September 20, 2012 Report Share Posted September 20, 2012 Does anybody microwave their media before use? Quote Link to comment Share on other sites More sharing options...
johns Posted September 20, 2012 Report Share Posted September 20, 2012 I sometimes treat small amounts of soil with boiling water, a method often recommended for sowing fern spore. Basically you fill a pot with soil, cover with 2-3 layers of kitchen paper to prevent the soil from being washed out of the pot, and pour boiling water through the soil. After treatment the pot is then put in a airtight box or zip-loc bag and allowed to cool before sowing. I don't remember the recommended amount of water at the moment, I would guess at least three or four times the soil volume. I think it's more effective if the pot is standing in a deep saucer. This method doesn't sterilize the soil, but it kills pathogens in the top layer of the soil which can harm or overgrow seedlings or fern gametophytes. Quote Link to comment Share on other sites More sharing options...
mobile Posted September 20, 2012 Report Share Posted September 20, 2012 Sterilised media can be more susceptible to fungal attack. I also read on another forum about an Australian grower who had peat catch fire inside the microwave! Quote Link to comment Share on other sites More sharing options...
gotcher Posted September 21, 2012 Report Share Posted September 21, 2012 To sterilser your compost or soil you really need a soil sterliser . It needs to go to 180 fahrenhelt if you go above or below this temperate your compost or peat won't be much good . Quote Link to comment Share on other sites More sharing options...
Dave Evans Posted September 21, 2012 Report Share Posted September 21, 2012 Umm, please don't cook the soil! There is no reason to sterlise it, just pasterize it like how John describes. Quote Link to comment Share on other sites More sharing options...
mobile Posted September 21, 2012 Report Share Posted September 21, 2012 There is sometimes good reason to sterilise soil. For instance, if you have peat which has moss spores and weed seeds in it. I usually restrict this practice for small plants, like utricularia soil though. Quote Link to comment Share on other sites More sharing options...
treefella83 Posted September 21, 2012 Report Share Posted September 21, 2012 yup peat catches fire in the microwave or could have a been dodgy microwave as i use an old one in the shed to dry small bowls and goblets that have been turned out of green wood Quote Link to comment Share on other sites More sharing options...
mobile Posted September 21, 2012 Report Share Posted September 21, 2012 They still use peat sods up here as fuel, so yep... it burns well. Quote Link to comment Share on other sites More sharing options...
nadja77 Posted September 22, 2012 Report Share Posted September 22, 2012 I used to nuke my peat before use since all my batches seemed to come with those pesky mosses! I've stopped partly due to the fact that it's too much of a mission to do each time, and I find it's actually pointless, as eventually the moss grows anyway (albeit slower). I've also noticed that it reduces the quality, as mentioned above. There is definitely more slime mold present in pots with nuked media. Quote Link to comment Share on other sites More sharing options...
jimscott Posted September 22, 2012 Author Report Share Posted September 22, 2012 I'm trying to rid my old media of pillbugs and/or other critters that might be in there. Would this work or be counter-productive? Quote Link to comment Share on other sites More sharing options...
mobile Posted September 22, 2012 Report Share Posted September 22, 2012 I don't think it would take much microwaving to kill the critters. Quote Link to comment Share on other sites More sharing options...
nadja77 Posted September 22, 2012 Report Share Posted September 22, 2012 It definitely will get rid of pest in the soil. I had great satisfaction nuking fungus gnat larvae which had invaded my pots! As mobile already said, you don't need to 'cook' the soil the kill them. Quote Link to comment Share on other sites More sharing options...
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