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Phal problem. Help!
I'm pretty sure I remember from my chemical rose growing days that it is a
systemic. "K Barrett" wrote in message et... I reviewed my notes from Janice Uchida's talk at the ASHA convention in 2001. I seem to recall she said that the mycelium stage infects the host bodily. By the time we see the effects of this infection the host is toast, the mycellium has gone on to produce fruiting bodies by the time we see sunken spots (or whatever) and has spred spores. These spores spread to adjacent plants and poof. She told of how whole GHs of Hawaiian cut flower dendrobiums will wilt overnight into mush. She said prevention is the cure, via cleanliness. I have no idea whether that helps Steve out. Funginex is now sold by Ortho as "Rose Pride Rose & Shrub Disease Control". The active ingredient is the Triforine that Pat Brennan thought was no longer in production. (present at 6.5%). According to package directions it can be mixed with Ortho Malathione Plus and Ortho Diazinone Ultra - follow label rates. I will search to see if triforine is systemic or not. I'm betting 'not'. K Barrett "Al" wrote in message ... This term "microfungus" is new to me. I looked at the pictures on Steve's website again with this is mind and wonder why there seems to be so many different expressions of damage? It is hard to see all of the various damage symptoms as common to one organism, but I suppose it is possible. I did a websearch and found a few bits of information. I want to know whether this is an organism that lives IN and spreads though the plant or if it live ON the plant's surface tissue. Fungi, as I understand them have several life stages. At some point it has to reproduce and would make fruiting bodies at the surface of the leaf that would spread it to new plants. If the "mycelium stage" of the fungus lives inside the plant and travels from cell to cell than wouldn't you need to target it with some kind of systemic fungicide that the plant could absorb rather than a topical fungicide that? Is it living off the tissue like a parasite or just clogging transport of nutrients and water as it grows from cell to cell, and tissue type to tissue type etc? How is a microfungus different from the regular fungus that we as orchid growers are always battling? (You know, the stuff we call 'rots' and which could as likely be a bacterial infection.) Is Physan systemic? I know it kills spores on surfaces but would it have any effect on fungus growing inside and being protected by the plant tissue from coming into contact with the chemical? This may be the reason behind the cocktail idea, one to kill the spores outside the plant and one to kill the actual fungus inside the plant. Daconil is systemic, right? Is there another reason why a cocktail is necessary? (We don't really know what it is so we hit is with everything we've got?) :-) You don't necessarily have to MIX the chemicals to have them both available for use. You might be better off to separate their application by a few days to produce the desired effect. "Pat Brennan" wrote in message ... Ray, I am in agreement with Aaron, I think Steve has a microfungus. I was guessing that before I even saw the pictures. I have had microfungus on phals, I have cured it. But the only way I have successfully cured microfungus is using a cocktail of chemicals. Two months ago when I mentioned a cocktail Aaron replied with a post about not mixing chemicals under the risk of toxic precipitate and wrecked buffers. Not wanting to hear this crap again, I took my discussion with Steve out of the group. I just find it maddening that today Aaron is giving pointers to sites promoting chemical cocktails. Pretending that you know more then the chemical manufactures or the directions supplied with the chemicals does a disservice to this group. Is the label that comes with the chemical the "precise knowledge" we must know or is there more? If we follow the label are we still going to create toxic precipitate? If I am Steve, who or what do I believe? Chemical labels includes a section on compatibility and yes you better read them and follow the directions. Randomly mixing any chemicals is a dumb idea. But, when you take copper out of the mix, it seems that most of the chemicals I commonly use are compatible. I am not making that up, it is what the labels say, it is what experience has shown. Some of the more common cocktails are even marketed as a single product, Spectro and Banrot to name two. BTW, I highly recommend Spectro which is a cocktail of 3336 and Daconil as a broad spectrum fungicide. Sorry about the double post, I would blame my ISP but who would believe me. From someone introduced to Griesbach's Blitz at a very young age, Pat |
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