David: Problem with N. eustachya leaves

[David]

David
Administrator

member is online





Joined: Dec 2006
Gender: Male
Posts: 2,326
Location: Kuala Lumpur
Problem with N. eustachya leaves
« Thread Started on Dec 13, 2007, 10:10pm » Hi guys/gals,

Need a little advise here. My N. eustachya leaf recently have this black patch that starts from the apex and margins of the leaf nearest to the apex. The black patch will slowly grow to the base of the leaf. The black part of the leaf looks like it is dry and dead.

Sorry I do not have a picture. Could not get a camera to take the picture.

This happens to the older leaves. One of the pitcher lid has also the same problem. However, only the lid is affected. The pitcher still looks fresh. The lid is now completely black and has dried out.

I grow this plant under grow lights indoors.

This is the first time I am seeing this on my Neps. Just can't figure out what it is. Any advise would be appreciated. Thanks « Last Edit: Dec 13, 2007, 10:11pm by David »Link to Post - Back to Top LoggedMy Wantlist phissionkorps
Advisor - Nepenthes

member is offline



if you don't grow from seed, toughen up!



Joined: Oct 2007
Gender: Male
Posts: 307
Location: Republic of Texas
Re: Problem with N. eustachya leaves
« Reply #1 on Dec 14, 2007, 5:35am » powdery black mildew perhaps?
I've really only had 2 cases of extremely mild fungus, and no other viral/fungal/insect pathogens/problems, so I'm notoriously bad at identifying them.
Link to Post - Back to Top 75.111.173.137Natura non facit saltum
Species seed is worth its weight in platinum
Valhalla when I die poweramps
New Member

member is offline





Joined: Nov 2007
Gender: Male
Posts: 15
Location: KL
Re: Problem with N. eustachya leaves
« Reply #2 on Dec 14, 2007, 11:19am » Try this: wipe carefully with 1) a dry cotton-bud on both blackened surfaced (top and bottom) and see if there is any powdery stuff caught on the cotton-bud; 2) repeat with a damp cotton-bud. If u find powder, probably fungus. no powder, can be many things, a pic would help.
If it is the oldest leaf, it is probably age, since it started at the apex and progresses to the petiole side. Happens to old pitchers ie lids of pitchers that dies first. Then the peristome and waxy region will go next, followed last by the glandular section.
Hope that helps
Link to Post - Back to Top 202.58.86.15 David
Administrator

member is online





Joined: Dec 2006
Gender: Male
Posts: 2,326
Location: Kuala Lumpur
Re: Problem with N. eustachya leaves
« Reply #3 on Dec 14, 2007, 1:35pm » ok, I'll try with the cotton bud and see. It is not with the oldest leaf and the rest of my neps does not have these symtoms when the leaf is about to die. It is usually brown in colour and not black.


Link to Post - Back to Top LoggedMy Wantlist poweramps
New Member

member is offline





Joined: Nov 2007
Gender: Male
Posts: 15
Location: KL
Re: Problem with N. eustachya leaves
« Reply #4 on Dec 14, 2007, 3:00pm » Check also if the leaf is slimy and/or smelly - probably bacteria to the likes of Erwinia, Xanthomonas or Pseudomonas. Hopefully it is nothing serious. Maybe the weather. Leaves of sibuyanensis and rajah i bought frm fauzi always age to black, especially if it is always moist and touching the spaghnum moss. « Last Edit: Dec 14, 2007, 3:07pm by poweramps »Link to Post - Back to Top 202.58.86.15