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  #1  
Old 10-25-2010, 05:33 AM
Wrebbitrocks Wrebbitrocks is offline
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Join Date: Mar 2008
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Location: Tucson, Az
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Default Can anybody help me identify this?

Hello everyone,
Its fall in Tucson and temps have been going into the 50's for a couple weeks now. Some of the Phals are putting out spikes. But some of my other ones are getting strange bright yellow areas on the leaves: no signs of die back, the yellow areas appear just as healthy as the rest of the leaf but bright yellow and just random splotches about the leaves.

a fairly large leaf on one plant started getting what looked like a perfect circle on the leaf edge. it was sunken and crinklish looking but dry and didnt go completely through the leaf, just on one side. still it wasnt mushy or dead. there are also small raised lines and the center vein was split for a length of it. i found it very suspicious so i cut the leaf off at first i thought it was a fungal or bacterial infection because of the perfect circle area and thought about a systemic fungicide. but the area wasnt spreading fast and just had yellow edges. what is it? the plants havent stayed wet and the roots are WAAAAY too healthy to be root root since the pot literally burst. i still have the leaf about 2 weeks later and the circle has remained the same and the leaf still green.

another symptom that i found is that the new leaves from the crown are getting curled edges. the leaves are healthy but the edges curl inward like a taco shell. what could it be? il post pictures in the morning when the sun comes out
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Can anybody help me identify this?-phaldamage-jpg   Can anybody help me identify this?-phaldamageclose-jpg  
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  #2  
Old 10-25-2010, 11:13 AM
Junebug Junebug is offline
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It looks very much like sun damage.
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  #3  
Old 10-25-2010, 12:14 PM
Wrebbitrocks Wrebbitrocks is offline
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thats what i initially thought but they barely get any direct sunlight. only in the morning and its only a few hours. they were fine the rest of the year. plus its only a few with the markings. ive seen sun damage before and this doesnt seem like it as there is no black egde'
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  #4  
Old 10-25-2010, 03:49 PM
RobS RobS is offline
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Can anybody help me identify this? Male
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My feeling would be sunburn to. Don't forget: sunburn only needs a few hours, the angle of the sun can change to give a different exposure, also humidity and water supply can play a role. Lack of water or to high humidity can both cause lack of evaporation and as a result of that a to high temperature of the leaf = sunburn.
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  #5  
Old 10-25-2010, 04:23 PM
shadytrake shadytrake is offline
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I think sunburn too. It only takes a little bit of direct for it to happen. I had one get burned in 30 minutes just because I set it down to re-arrange some stuff and I wasn't paying attention to the sunlight.
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  #6  
Old 10-27-2010, 02:55 PM
Wrebbitrocks Wrebbitrocks is offline
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these guys only get morning sun and they havent burned yet. heres some more signs on some other plants and they dont even get sun. i also cant explain the perfect circle
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