TCurrell Posted April 24, 2014 Report Share Posted April 24, 2014 How do you guys control mould whilst germinating nepenthes seeds? I ask because i have some bicalcarata, spectabilis, flava and mirabilis seeds in milled sphag moss at the moment for the past 2-3 weeks. I treated the seeds to a hydrogen peroxide spray and did the same with the moss aswell as a blast in the microwave before sowing. i still get tiny amounts of green and white mould, less than the size od a pin head which i have been picking out to stop it spreading too much. does anyone use sprays etc it would be handy to know. thanks. Quote Link to comment Share on other sites More sharing options...
vincent Posted April 25, 2014 Report Share Posted April 25, 2014 Hi, After a lot of research on the web regarding this topic, I also tried hydrogen peroxide. This is the protocol I've designed based on the info I could get (many people mention that they dilute the H2O2 they buy, but they do not provide the concentration of the stock solution... Pretty useless info!). The concentration I state here are final concentration (my stock is 30%). 1. Soak seeds in 0.15% H2O2 + boiled rain water for 48h. 2. Saw them in pots with 3/4 of rinsed perlite (bottom) and 1/4 finely chopped dead sphagnum, boiled quickly. Put pots in tray (mini-greenhouse) with water up to about 3/4 of the height of the pots. 3. Spray every other day with 0.3% H2O2 + boiled rain water. Results: germination rate OK, but mould was appearing on several of my seeds batches... Now I continue to use steps 1 and 2, but I also spray once with Aliette, 1g/liter as soon as I see anything suspicious. It is working very well! So my current protocol is: 1. Soak seeds in 0.15% H2O2 + boiled rain water for 48h. 2. Saw them in small pots with 3/4 of rinsed perlite (bottom) and 1/4 finely chopped dead sphagnum, boiled quickly. Put pots in tray (mini-greenhouse) with water up to about 3/4 of the height of the pots. 3. Spray every other day with boiled rain water. 4. Spray with Aliette 1g/L in case of mould infection. Quote Link to comment Share on other sites More sharing options...
gardenofeden Posted April 25, 2014 Report Share Posted April 25, 2014 Probably seed that get mould are dead already? Quote Link to comment Share on other sites More sharing options...
elvis Posted April 26, 2014 Report Share Posted April 26, 2014 I use H2O2 too! i just pour a dilute solution (3%)over seedlings give them a little more air, then repeat 24hrs This was reccomended tome by Greg Bourke, you can find more info on "Hydrponics" forums Quote Link to comment Share on other sites More sharing options...
vincent Posted April 26, 2014 Report Share Posted April 26, 2014 What I noticed with 3% H2O2 is that it's pretty strong! The sphagnum and the seeds become white. The seeds I've treated with this concentration did not germinate, but I can not really conclude about this since I did not perform a comparative test with or without 3% H2O2. Elvis: you mention that you treat seedlings. Did you try on seeds and did you get a good germination rate? 1 Quote Link to comment Share on other sites More sharing options...
Guest paul y Posted April 27, 2014 Report Share Posted April 27, 2014 hi all, I have been using h202 for a loooong time, in the right concentrations in the right applications its a miracle worker, in the wrong applications or strengths and its a plant killer, it is invaluable for controlling soil pests but can also destroy the bacterial balance of soil as well, definitive double edged sword. the web is a mess with info on this subject though with little in the way of accurate data for cp growers, the concentrations elvis has listed have been my go to conc for a while and I know its safe on many plants and is pretty much a good place to start paul Quote Link to comment Share on other sites More sharing options...
vincent Posted April 27, 2014 Report Share Posted April 27, 2014 Thank you for the confirmation Paul! Do you also see a whitening of the seeds and sphagnum when you spray it? Quote Link to comment Share on other sites More sharing options...
elvis Posted April 27, 2014 Report Share Posted April 27, 2014 Sorry i have only used it on Seedlings Quote Link to comment Share on other sites More sharing options...
TCurrell Posted April 28, 2014 Author Report Share Posted April 28, 2014 Thanks for the help guys, ill try Aliette if any more appears but so far (fingers crossed) the mould hasn't returned. Quote Link to comment Share on other sites More sharing options...
vincent Posted September 5, 2014 Report Share Posted September 5, 2014 (edited) Just a trick I use now when preparing the chopped dead sphagnum layer: I put the dried LFS in a food processor! Great for lazy people like me, and works perfectly. Edited September 5, 2014 by vincent 1 Quote Link to comment Share on other sites More sharing options...
fksdl421 Posted May 13, 2015 Report Share Posted May 13, 2015 I heard that sulfur based fungicide would help with reducing moulds and fungi. I sowed nepenthes seeds too. White fungi attacked and spread. But when I applied the fungicide. They all gone and stopped. But little fungi. Appearing ! But my seeds look good now ! Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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