Species Phalaenopsis leaves showing small wet spots...
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  #1  
Old 05-22-2017, 01:54 PM
Prashant Prashant is offline
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Species Phalaenopsis leaves showing small wet spots... Male
Default Species Phalaenopsis leaves showing small wet spots...

I have recently purchased 2 Phal species. Initially they were healthy,but I found that after a week the leaves showing small spots which expanded further and leaves were showing rotted appearance. I cut the leaves at some healthy point but it didn't help. I have temperature of 40C (max.) and 30C (min.). Is it temperature effect or something else. Please help me to sort it out.
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Old 05-22-2017, 03:31 PM
Orchid Whisperer Orchid Whisperer is offline
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Species Phalaenopsis leaves showing small wet spots... Male
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It is likely a bacterial rot such as Erwinia. Cut out the rot again, place the plants in a shaded dry location and refrain from watering for a couple weeks. After 2 weeks, wipe the leaves with a paper towel and hydrogen peroxide. Wait a day or two, then resume watering just the roots, very carefully, no water on the leaves. Keep the plants under observation each day, looking for signs that the rot has returned.

After a few more weeks you can treat the plant normally, though I would still plant to keep it out of the rain and in the shade for a while.
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Old 05-22-2017, 03:40 PM
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Pictures would be a big help in diagnosing any problem. Meanwhile, does your problem look anything like this?
Save my phal: Clear soft spots on new leaves?

In general, anything that spreads should be isolated from other plants to protect them from whatever the problem is.
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Old 05-22-2017, 04:35 PM
jkofferdahl jkofferdahl is offline
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From the description, I also suspect it's a bacterial infection. Bacteria acts quickly! Separate the plant from your others immediately. Using a sterile blade, cut away the infected tissue. Once cut off, liberally apply a copper-based fungicide/bacteriacide. You'll likely want to repeat application after about 5 days. If spots return, keep cutting.
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Old 05-22-2017, 11:46 PM
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Erwinia bacteria are most problematic when it is hot and humid. Your growing area is hot. What is your relative humidity?
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Old 05-23-2017, 12:20 AM
Prashant Prashant is offline
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Its 40%

---------- Post added at 09:50 AM ---------- Previous post was at 09:49 AM ----------

No, its not like that.
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