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#1
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Phragmipedium Problem
While most of my phrags are growing well, the leaves of some of some of the
new growths and new leaves on some smaller plants have acquired a brownish yellow sick color. Roots are not bad, but could be better. Some plants are in S/H and others are in a bark/CHC mix. I am using the Michigan State fertilizer in RO water, but do alternate with Jack's RO orchid fertilizer. Multiple fans in the greenhouse keep air circulating, I have shading (aluminized) now on the greenhouse and keep the temps between 60 and about 75 this time of year. Any comments on what the problem is/could be or a possible solution? Not all my phrags show this, but I don't want the problem to spread. Someone mentioned that I should get a leaf cultured/tested for Xanthamonous, Fusarium or Anthracnose. Does anyone know where any tests could be done? Any suggestions would be appreciated. Thanks Charles VanDyke |
#2
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Phragmipedium Problem
Hi Charles,
Is this disease killing parts of the leaves or are the leaves changing color but staying alive? If you were to cut off all the bad looking parts, would there be anything left of the worst plants? Steve cvandyke wrote: While most of my phrags are growing well, the leaves of some of some of the new growths and new leaves on some smaller plants have acquired a brownish yellow sick color. Roots are not bad, but could be better. Some plants are in S/H and others are in a bark/CHC mix. I am using the Michigan State fertilizer in RO water, but do alternate with Jack's RO orchid fertilizer. Multiple fans in the greenhouse keep air circulating, I have shading (aluminized) now on the greenhouse and keep the temps between 60 and about 75 this time of year. Any comments on what the problem is/could be or a possible solution? Not all my phrags show this, but I don't want the problem to spread. Someone mentioned that I should get a leaf cultured/tested for Xanthamonous, Fusarium or Anthracnose. Does anyone know where any tests could be done? Any suggestions would be appreciated. Thanks Charles VanDyke |
#3
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Phragmipedium Problem
Why not turn to American Floral Endowment at http://www.endowment.org/
and ask them, they should know. Best of luck Harry http://www.successflorist.com |
#4
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Phragmipedium Problem
On Thu, 13 Apr 2006 00:26:24 -0400, Steve wrote:
Hi Charles, Is this disease killing parts of the leaves or are the leaves changing color but staying alive? If you were to cut off all the bad looking parts, would there be anything left of the worst plants? Steve Charles - Are these plants growing well with yellow-green leaves or not growing well and showing sick yellow leaves? Could these plants be in a location where the sun sneaks around your shading and they are getting more sun than you think? I would move them in away from the glass a bit to check for an over-exposed problem. If it is extra sun, they may be able to take it with more food or it may be that they are just stressed too much and need relief. Our feeding styles are all personal balance between sun and water along with feeding. This trio needs to be properly balanced in each gh and is not necessarily the same from grower to grower. It is very dependent on the sun and temp. in your growing space. After all our plants can be stressed just as we can. |
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