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#1
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Physan & Orthene Q
All,
I have had some probs with fungus and also, this month, either thrips or aphids. (I vote for aphids, because I can usually see thrips.) The streaks in flowers on a few plants made it clear that some beasties were at work. We treated with Physan, at 2 tsp/gal, first, before we noticed the bug problem. A week later, we treated with Orthene. Having used Orthene before at label recommended dilution and seeing leaf damage afterward, I asked a very successful local grower what strength he uses; he said 2 tsp/gal (much less than the label recommends, but you can't argue with his success). The leaves on our Vandas sustained a good bit of damage right after the treatments. They look scorched in places. Any help at all for this? I'm really at a loss now. To make matters worse, I recently bought a mature Asctrm. from a friend. What happened to it is the subject of another thread. Yuck. Diana |
#2
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Physan & Orthene Q
I got tired of the sprays.... so...I am testing beneficial nematodes.
Not because I am anti-chemical, but because I got a plant from a greenhouse and it infected my collection with a chemical resistant pest. They know it is resistant, and didn't even say anything. Despite my repotting everything that comes into my place, this somehow had taken a hold last year. The BN's have only been in the collection for a few weeks, so I am not proudly proclaiming victory yet, but since the temps have been in the mid 80's for a few weeks, and things look promising. Claims to hunt down and kill over 250 types of pests. Safe to pets and humans, and since I only have about 400 plants, only runs about 30 bucks. As long as there is a food source, they live, if not, they die off. Good luck.. the constant chasing of pests can be annoying. Crystal -- http://home.comcast.net/~xtals/orchid.htm "Diana Kulaga" wrote in message hlink.net... All, I have had some probs with fungus and also, this month, either thrips or aphids. (I vote for aphids, because I can usually see thrips.) The streaks in flowers on a few plants made it clear that some beasties were at work. We treated with Physan, at 2 tsp/gal, first, before we noticed the bug problem. A week later, we treated with Orthene. Having used Orthene before at label recommended dilution and seeing leaf damage afterward, I asked a very successful local grower what strength he uses; he said 2 tsp/gal (much less than the label recommends, but you can't argue with his success). The leaves on our Vandas sustained a good bit of damage right after the treatments. They look scorched in places. Any help at all for this? I'm really at a loss now. To make matters worse, I recently bought a mature Asctrm. from a friend. What happened to it is the subject of another thread. Yuck. Diana |
#3
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Physan & Orthene Q
Crystal,
I'll be interested in knowing how the BN's work out. I grow outside under screening, though, not in a greenhouse, so I don't know if that solution is workable. Do these critters have a down side? Here in FL, nematodes are the scourge of anyone who tries to grow squash, cucumbers, that sort of thing. I imagine the one I'm referring to is a different variety. Maybe time for some research. Tx Diana |
#4
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Physan & Orthene Q
"Diana Kulaga" wrote in message
hlink.net... Crystal, I'll be interested in knowing how the BN's work out. I grow outside under screening, though, not in a greenhouse, so I don't know if that solution is workable. FWIW, I haven't tried beneficial nematodes, but I do buy ladybugs to control aphids in my outdoor gardens, and they seem to work. I buy one or two bags a year, and release them as necessary. They will stay dormant if you keep them in the fridge. This year I plan on getting a few praying mantis pods, too. --Matt |
#5
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Physan & Orthene Q
They are medium borers, so I don't think that will be an issue. This is not the company I bought mine from, but here is the information on them. http://www.biologicco.com/products/L&G%20scanmask.htm I suppose there might be a downside. Doesn't everything have an upside and a downside depending on your point of view? These are invisible to the naked eye. I haven't pulled out the magnifying glass to see if I could spot them with that.. but so far I was happy enough to buy another group, and they are just sitting in my fridge. I figure I could easily spend 30 bucks on pesticides for the life of the nematodes, and I don't have to constantly worry that I am using too much or too little to handle the problem. I am a skeptic, so another month or so of warm weather will be the test to see how they are handling things. I always seem to have a problem with bugs in the in-between seasons, and so far I don't even see my usual outbreak of whitefly. Crystal -- http://home.comcast.net/~xtals/orchid.htm "Diana Kulaga" wrote in message hlink.net... Crystal, I'll be interested in knowing how the BN's work out. I grow outside under screening, though, not in a greenhouse, so I don't know if that solution is workable. Do these critters have a down side? Here in FL, nematodes are the scourge of anyone who tries to grow squash, cucumbers, that sort of thing. I imagine the one I'm referring to is a different variety. Maybe time for some research. Tx Diana |
#6
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Physan & Orthene Q
They are medium borers, so I don't think that will be an issue. This is not the company I bought mine from, but here is the information on them. http://www.biologicco.com/products/L&G%20scanmask.htm I suppose there might be a downside. Doesn't everything have an upside and a downside depending on your point of view? These are invisible to the naked eye. I haven't pulled out the magnifying glass to see if I could spot them with that.. but so far I was happy enough to buy another group, and they are just sitting in my fridge. I figure I could easily spend 30 bucks on pesticides for the life of the nematodes, and I don't have to constantly worry that I am using too much or too little to handle the problem. I am a skeptic, so another month or so of warm weather will be the test to see how they are handling things. I always seem to have a problem with bugs in the in-between seasons, and so far I don't even see my usual outbreak of whitefly. Crystal -- http://home.comcast.net/~xtals/orchid.htm "Diana Kulaga" wrote in message hlink.net... Crystal, I'll be interested in knowing how the BN's work out. I grow outside under screening, though, not in a greenhouse, so I don't know if that solution is workable. Do these critters have a down side? Here in FL, nematodes are the scourge of anyone who tries to grow squash, cucumbers, that sort of thing. I imagine the one I'm referring to is a different variety. Maybe time for some research. Tx Diana |
#7
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Physan & Orthene Q
They are medium borers, so I don't think that will be an issue. This is not the company I bought mine from, but here is the information on them. http://www.biologicco.com/products/L&G%20scanmask.htm I suppose there might be a downside. Doesn't everything have an upside and a downside depending on your point of view? These are invisible to the naked eye. I haven't pulled out the magnifying glass to see if I could spot them with that.. but so far I was happy enough to buy another group, and they are just sitting in my fridge. I figure I could easily spend 30 bucks on pesticides for the life of the nematodes, and I don't have to constantly worry that I am using too much or too little to handle the problem. I am a skeptic, so another month or so of warm weather will be the test to see how they are handling things. I always seem to have a problem with bugs in the in-between seasons, and so far I don't even see my usual outbreak of whitefly. Crystal -- http://home.comcast.net/~xtals/orchid.htm "Diana Kulaga" wrote in message hlink.net... Crystal, I'll be interested in knowing how the BN's work out. I grow outside under screening, though, not in a greenhouse, so I don't know if that solution is workable. Do these critters have a down side? Here in FL, nematodes are the scourge of anyone who tries to grow squash, cucumbers, that sort of thing. I imagine the one I'm referring to is a different variety. Maybe time for some research. Tx Diana |
#8
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Physan & Orthene Q
They are medium borers, so I don't think that will be an issue. This is not the company I bought mine from, but here is the information on them. http://www.biologicco.com/products/L&G%20scanmask.htm I suppose there might be a downside. Doesn't everything have an upside and a downside depending on your point of view? These are invisible to the naked eye. I haven't pulled out the magnifying glass to see if I could spot them with that.. but so far I was happy enough to buy another group, and they are just sitting in my fridge. I figure I could easily spend 30 bucks on pesticides for the life of the nematodes, and I don't have to constantly worry that I am using too much or too little to handle the problem. I am a skeptic, so another month or so of warm weather will be the test to see how they are handling things. I always seem to have a problem with bugs in the in-between seasons, and so far I don't even see my usual outbreak of whitefly. Crystal -- http://home.comcast.net/~xtals/orchid.htm "Diana Kulaga" wrote in message hlink.net... Crystal, I'll be interested in knowing how the BN's work out. I grow outside under screening, though, not in a greenhouse, so I don't know if that solution is workable. Do these critters have a down side? Here in FL, nematodes are the scourge of anyone who tries to grow squash, cucumbers, that sort of thing. I imagine the one I'm referring to is a different variety. Maybe time for some research. Tx Diana |
#9
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Physan & Orthene Q
Be prepared to be discouraged. I found the mantis to be pretty
useless. Most don't survive molting. They really aren't that great of a pest reducer. But they can be fun to watch. Crystal -- http://home.comcast.net/~xtals/orchid.htm "Matthew Donadio" wrote in message ... "Diana Kulaga" wrote in message hlink.net... Crystal, I'll be interested in knowing how the BN's work out. I grow outside under screening, though, not in a greenhouse, so I don't know if that solution is workable. FWIW, I haven't tried beneficial nematodes, but I do buy ladybugs to control aphids in my outdoor gardens, and they seem to work. I buy one or two bags a year, and release them as necessary. They will stay dormant if you keep them in the fridge. This year I plan on getting a few praying mantis pods, too. --Matt |
#10
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Physan & Orthene Q
Be prepared to be discouraged. I found the mantis to be pretty
useless. Most don't survive molting. They really aren't that great of a pest reducer. But they can be fun to watch. Crystal -- http://home.comcast.net/~xtals/orchid.htm "Matthew Donadio" wrote in message ... "Diana Kulaga" wrote in message hlink.net... Crystal, I'll be interested in knowing how the BN's work out. I grow outside under screening, though, not in a greenhouse, so I don't know if that solution is workable. FWIW, I haven't tried beneficial nematodes, but I do buy ladybugs to control aphids in my outdoor gardens, and they seem to work. I buy one or two bags a year, and release them as necessary. They will stay dormant if you keep them in the fridge. This year I plan on getting a few praying mantis pods, too. --Matt |
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