Quote:
Originally Posted by Lodewijkp
maybe a 24 soak in warm lemon juice or lime juice wil help ? or wil it destroy the seeds ? maybe a 38 soak in warm water and a 10 hour soak in lemon juice ?
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this amounts to chemical scarification and you will need an acid much stronger than lemon juice. in my lab we tested nitric acid (HNO3), sulfuric acid (H2SO4), hydrochloric acid (HCl) and sodium hydroxide (NaOH). the best effects appeared with 15 minute soak in full strength HNO3, 45% germination on a soilless mix germination, in fact chemical scarification increased the likelihood of microbial contamination - non-treated seeds had a 80% germination rate. we tested M. balbasiana, M. acuminata, and M. sikkimensis and found no statistical difference between species and the chemicals used to scarify.
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