Cattleya leaves blackening and pseudobulb drying
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Cattleya leaves blackening and pseudobulb drying
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  #1  
Old 10-13-2011, 12:41 PM
sastry sastry is offline
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Default Cattleya leaves blackening and pseudobulb drying

Hi
I have a problem with my Cattleyas, the leaves of well grown plants are developing black patches and they are not soft and then proceeds to the pseudobulb and then the pseudobulb dries and spreads to the entire plant killing it. I live in Southern India and the weather is ideal for Cattleyas except between Dec-Jan to April when humidity is low. I have used systemic fungicide with little results. Anyone come across this problem with reasons and the control will be of great help.
sastry
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  #2  
Old 10-13-2011, 07:34 PM
Zoi2 Zoi2 is offline
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That sounds like black rot. This link may be of interest to you. PP260/PP260: Black Rot of Orchids Caused by Phytophthora palmivora and Phytophthora cactorum
Joann
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  #3  
Old 10-13-2011, 10:43 PM
Eyebabe Eyebabe is offline
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Quote:
Originally Posted by Zoi2 View Post
That sounds like black rot. This link may be of interest to you. PP260/PP260: Black Rot of Orchids Caused by Phytophthora palmivora and Phytophthora cactorum
Joann
Agreed. aka Pythium.
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  #4  
Old 10-14-2011, 02:14 PM
sastry sastry is offline
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Thanks for the info, i have a doubt whether the rot will have a soft portion on the leaf as the blackened portion is not soft.
sastry
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cattleyas, humidity, leaves, low, pseudobulb, drying, blackening, cattleya


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