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#1
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"Mystery" disease. . .
Hello All,
That's probably not a mystery to a number in the r.g.o cohort. I have posted 2 photographs on a.b.p.o under the titles "Disease Picture" #1 & #2. This particular catt is now in very sad shape. At first I thought I was dealing with mealybugs and tried Neem Oil. No dice. Whatever this stuff is doesn't ever turn "fluffy and gray black" like mealys do. Photo #1 shows how this stuff starts along the base of the rhizome, looking a bit like mealys or snowy mold. The second shows the blackening process taking blace on one pseudobulb (lower left) and one that's gone (directly across, the pseudobulb that's on the very top of the three that are visible). Several of my plants have developed this over the summer, but this is the only one that it appears to be killing. The two others only have a white coating around the base of all the pseudobulbs with no blackening or plant death at all. Any help is most appreciated. Brian |
#2
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No mystery, I'm afraid. A soft scale.
Dip a toothbrush in some water containing liquid dishwashing detergent (1 tablespoon per gallon), and scrub away. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Books, Artwork, and Lots of Free Info! .. "Brian Vogel" wrote in message ... Hello All, That's probably not a mystery to a number in the r.g.o cohort. I have posted 2 photographs on a.b.p.o under the titles "Disease Picture" #1 & #2. This particular catt is now in very sad shape. At first I thought I was dealing with mealybugs and tried Neem Oil. No dice. Whatever this stuff is doesn't ever turn "fluffy and gray black" like mealys do. Photo #1 shows how this stuff starts along the base of the rhizome, looking a bit like mealys or snowy mold. The second shows the blackening process taking blace on one pseudobulb (lower left) and one that's gone (directly across, the pseudobulb that's on the very top of the three that are visible). Several of my plants have developed this over the summer, but this is the only one that it appears to be killing. The two others only have a white coating around the base of all the pseudobulbs with no blackening or plant death at all. Any help is most appreciated. Brian |
#3
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No mystery, I'm afraid. A soft scale.
Dip a toothbrush in some water containing liquid dishwashing detergent (1 tablespoon per gallon), and scrub away. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Books, Artwork, and Lots of Free Info! .. "Brian Vogel" wrote in message ... Hello All, That's probably not a mystery to a number in the r.g.o cohort. I have posted 2 photographs on a.b.p.o under the titles "Disease Picture" #1 & #2. This particular catt is now in very sad shape. At first I thought I was dealing with mealybugs and tried Neem Oil. No dice. Whatever this stuff is doesn't ever turn "fluffy and gray black" like mealys do. Photo #1 shows how this stuff starts along the base of the rhizome, looking a bit like mealys or snowy mold. The second shows the blackening process taking blace on one pseudobulb (lower left) and one that's gone (directly across, the pseudobulb that's on the very top of the three that are visible). Several of my plants have developed this over the summer, but this is the only one that it appears to be killing. The two others only have a white coating around the base of all the pseudobulbs with no blackening or plant death at all. Any help is most appreciated. Brian |
#4
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No mystery, I'm afraid. A soft scale.
Dip a toothbrush in some water containing liquid dishwashing detergent (1 tablespoon per gallon), and scrub away. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Books, Artwork, and Lots of Free Info! .. "Brian Vogel" wrote in message ... Hello All, That's probably not a mystery to a number in the r.g.o cohort. I have posted 2 photographs on a.b.p.o under the titles "Disease Picture" #1 & #2. This particular catt is now in very sad shape. At first I thought I was dealing with mealybugs and tried Neem Oil. No dice. Whatever this stuff is doesn't ever turn "fluffy and gray black" like mealys do. Photo #1 shows how this stuff starts along the base of the rhizome, looking a bit like mealys or snowy mold. The second shows the blackening process taking blace on one pseudobulb (lower left) and one that's gone (directly across, the pseudobulb that's on the very top of the three that are visible). Several of my plants have developed this over the summer, but this is the only one that it appears to be killing. The two others only have a white coating around the base of all the pseudobulbs with no blackening or plant death at all. Any help is most appreciated. Brian |
#5
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Ray wrote:
No mystery, I'm afraid. A soft scale. Dip a toothbrush in some water containing liquid dishwashing detergent (1 tablespoon per gallon), and scrub away. Ray, I will certainly try this. Your advice has been very helpful in the past. Are there any insecticides, systemic or otherwise, that are good for this? I have the feeling that at this stage there's no way to "get it all". Brian |
#6
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Ray wrote:
No mystery, I'm afraid. A soft scale. Dip a toothbrush in some water containing liquid dishwashing detergent (1 tablespoon per gallon), and scrub away. Ray, I will certainly try this. Your advice has been very helpful in the past. Are there any insecticides, systemic or otherwise, that are good for this? I have the feeling that at this stage there's no way to "get it all". Brian |
#7
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I vote for Enstar II as a post-scrubbing treatment and drench. It is an
insect growth regulator, and no maturation means no reproduction. It's damned expensive on the surface - $85 for a 5-ounce bottle - but it goes a very long way. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Books, Artwork, and Lots of Free Info! .. "Brian Vogel" wrote in message ... Ray wrote: No mystery, I'm afraid. A soft scale. Dip a toothbrush in some water containing liquid dishwashing detergent (1 tablespoon per gallon), and scrub away. Ray, I will certainly try this. Your advice has been very helpful in the past. Are there any insecticides, systemic or otherwise, that are good for this? I have the feeling that at this stage there's no way to "get it all". Brian |
#8
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I vote for Enstar II as a post-scrubbing treatment and drench. It is an
insect growth regulator, and no maturation means no reproduction. It's damned expensive on the surface - $85 for a 5-ounce bottle - but it goes a very long way. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Books, Artwork, and Lots of Free Info! .. "Brian Vogel" wrote in message ... Ray wrote: No mystery, I'm afraid. A soft scale. Dip a toothbrush in some water containing liquid dishwashing detergent (1 tablespoon per gallon), and scrub away. Ray, I will certainly try this. Your advice has been very helpful in the past. Are there any insecticides, systemic or otherwise, that are good for this? I have the feeling that at this stage there's no way to "get it all". Brian |
#9
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Volck Oil is a good source for ridding scale. It, however, has been several
years that I had an even slight problem; however, this seemed to do the trick. .. . . Pam Everything Orchid Management System http://www.pe.net/~profpam/page3.html ----------------------- Brian Vogel wrote: Ray wrote: No mystery, I'm afraid. A soft scale. Dip a toothbrush in some water containing liquid dishwashing detergent (1 tablespoon per gallon), and scrub away. Ray, I will certainly try this. Your advice has been very helpful in the past. Are there any insecticides, systemic or otherwise, that are good for this? I have the feeling that at this stage there's no way to "get it all". Brian |
#10
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Volck Oil is a good source for ridding scale. It, however, has been several
years that I had an even slight problem; however, this seemed to do the trick. .. . . Pam Everything Orchid Management System http://www.pe.net/~profpam/page3.html ----------------------- Brian Vogel wrote: Ray wrote: No mystery, I'm afraid. A soft scale. Dip a toothbrush in some water containing liquid dishwashing detergent (1 tablespoon per gallon), and scrub away. Ray, I will certainly try this. Your advice has been very helpful in the past. Are there any insecticides, systemic or otherwise, that are good for this? I have the feeling that at this stage there's no way to "get it all". Brian |
#11
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The Enstar that Ray recommended is not something I'm familiar with.
However, it sounds like a long-term solution. This is not entirely a bad thing, and I'm going to look into it. But if you need a quick kill, try acephate 75% [sold under various brand names like Orthene, Isotox, etc.]. But you must read the label; if the percentage is other than 75%, you need to adjust the dosage accordingly. -- Kenni Judd Juno Beach Orchids http://www.jborchids.com "Brian Vogel" wrote in message ... Hello All, That's probably not a mystery to a number in the r.g.o cohort. I have posted 2 photographs on a.b.p.o under the titles "Disease Picture" #1 & #2. This particular catt is now in very sad shape. At first I thought I was dealing with mealybugs and tried Neem Oil. No dice. Whatever this stuff is doesn't ever turn "fluffy and gray black" like mealys do. Photo #1 shows how this stuff starts along the base of the rhizome, looking a bit like mealys or snowy mold. The second shows the blackening process taking blace on one pseudobulb (lower left) and one that's gone (directly across, the pseudobulb that's on the very top of the three that are visible). Several of my plants have developed this over the summer, but this is the only one that it appears to be killing. The two others only have a white coating around the base of all the pseudobulbs with no blackening or plant death at all. Any help is most appreciated. Brian |
#12
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The Enstar that Ray recommended is not something I'm familiar with.
However, it sounds like a long-term solution. This is not entirely a bad thing, and I'm going to look into it. But if you need a quick kill, try acephate 75% [sold under various brand names like Orthene, Isotox, etc.]. But you must read the label; if the percentage is other than 75%, you need to adjust the dosage accordingly. -- Kenni Judd Juno Beach Orchids http://www.jborchids.com "Brian Vogel" wrote in message ... Hello All, That's probably not a mystery to a number in the r.g.o cohort. I have posted 2 photographs on a.b.p.o under the titles "Disease Picture" #1 & #2. This particular catt is now in very sad shape. At first I thought I was dealing with mealybugs and tried Neem Oil. No dice. Whatever this stuff is doesn't ever turn "fluffy and gray black" like mealys do. Photo #1 shows how this stuff starts along the base of the rhizome, looking a bit like mealys or snowy mold. The second shows the blackening process taking blace on one pseudobulb (lower left) and one that's gone (directly across, the pseudobulb that's on the very top of the three that are visible). Several of my plants have developed this over the summer, but this is the only one that it appears to be killing. The two others only have a white coating around the base of all the pseudobulbs with no blackening or plant death at all. Any help is most appreciated. Brian |
#13
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Kenni Judd wrote:
The Enstar that Ray recommended is not something I'm familiar with. However, it sounds like a long-term solution. This is not entirely a bad thing, and I'm going to look into it. But if you need a quick kill, try acephate 75% [sold under various brand names like Orthene, Isotox, etc.]. But you must read the label; if the percentage is other than 75%, you need to adjust the dosage accordingly. Are you suggesting an undiluted application with a brush? Thanks to you, Pam, & Ray for the suggestions. I did use what used to be marketed as Isotox with great results for both hard scale and mealys. These plants got the same spraying schedule, but it didn't kill the soft scale off. I think I'm going to have to remove these from their cocohusk chips, do a through scrubbing as Ray suggested, then Volck/Neem/Isotox (probably the latter) before repotting. I'm just finishing up a move and am still trying to get a basement light system set up for my collection (which isn't going according to schedule). I do appreciate the suggestions. Brian |
#14
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Kenni Judd wrote:
The Enstar that Ray recommended is not something I'm familiar with. However, it sounds like a long-term solution. This is not entirely a bad thing, and I'm going to look into it. But if you need a quick kill, try acephate 75% [sold under various brand names like Orthene, Isotox, etc.]. But you must read the label; if the percentage is other than 75%, you need to adjust the dosage accordingly. Are you suggesting an undiluted application with a brush? Thanks to you, Pam, & Ray for the suggestions. I did use what used to be marketed as Isotox with great results for both hard scale and mealys. These plants got the same spraying schedule, but it didn't kill the soft scale off. I think I'm going to have to remove these from their cocohusk chips, do a through scrubbing as Ray suggested, then Volck/Neem/Isotox (probably the latter) before repotting. I'm just finishing up a move and am still trying to get a basement light system set up for my collection (which isn't going according to schedule). I do appreciate the suggestions. Brian |
#15
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YIKES! NO! You need to dilute to the appropriate recommendations for a 75%
acephate product -- which requires higher math if what you can buy has a different % of the active ingredient (acephate). But NO, absolutely not, even if you get a liquid rather than a wettable powder, should you brush it on "straight." Also, if you have already used Isotox [the active ingredient of which is acephate], then you should use something different next time. Oils are good if your weather is cool Other prospects are Sevin, Malathion, Cygon ... -- Kenni Judd Juno Beach Orchids http://www.jborchids.com Are you suggesting an undiluted application with a brush? Thanks to you, Pam, & Ray for the suggestions. I did use what used to be marketed as Isotox with great results for both hard scale and mealys. These plants got the same spraying schedule, but it didn't kill the soft scale off. I think I'm going to have to remove these from their cocohusk chips, do a through scrubbing as Ray suggested, then Volck/Neem/Isotox (probably the latter) before repotting. I'm just finishing up a move and am still trying to get a basement light system set up for my collection (which isn't going according to schedule). I do appreciate the suggestions. Brian |
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