With some very expensive plants ( In the 500$ range+) that had rot problems at the nursery we unpotted the plant, scraped off as much rotten tissue as possible then dusted it with flowers of sulfur. It is just powered sulfur and can be found at most drug stores. It kills almost all fungi it hits.Let the plant stay dry to let the rotten area heal. It is very safe and has been used on people for several thousand years to kill germs. Russ H. PS Do you know what it would cost in hydrogen peroxide to treat a large area. This is not a practical solution.Was the speaker smoking cannabis before the lecture. I have to admit I have heard some crazy ideas but this really is the top. Are you sure it wasn't an April fool joke on the audience. If this speaker gave out any literature proving his thesis could you please send me a copy. I will gladly pay for all the costs. Just remember how fast peroxide breaks down into water and oxygen if you pour it on a cut. The minute it would hit the dirt it would break down/ within seconds. In a message dated 4/5/2013 2:22:47 A.M. Pacific Daylight Time, brian.whyer@btinternet.com writes: >________________________________ >As for carbon and oxygen sources - a local soil scientist in a lecture told a group of >us to consider adding sugar and 3% hydrogen peroxide to irrigation water for fruit trees >and lawns. He said it encouraged growth of beneficial microorganisms. The quantities >were small: per irrigated acre / 0.4 hecatare, about 1 cup / 240ml granulated sugar (I >know it isn't measured that way in SI but I don't feel like looking up the density of >granulated sugar) and 1 pint / 480ml 3% hydrogen peroxide. > > >Is there any point in using hydrogen peroxide (H2O2) when watering plants in soil that contains appreciable quantities of organics. I would have thought the oxygen would be soon mopped up, and not be available to plants, unless in large excess. Hydroponics growers use it with good results I believe http://quickgrow.com/gardening_articles/… but the larger the concentration of organic compounds (Carbon containing, not chemical free!) the bigger the problem. > >Has anyone used H2O2 in watering to recover difficult bulbs, eg. Worsleya , from root rots? > >Brian Whyer, Buckinghamshire, England, coldest April day since 1962 _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/