Go Back   Orchid Forum Orchid Care > Orchid Care > Orchid Pests and Diseases

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 06-26-2011, 02:12 PM
Anky
Guest
 
Posts: n/a
Coelogyne Martae got spots (Is this a virus?)

I dont know what is causing this black spots on some leaves with yellow rings around it(I read from some postings of members that black spots with yellow rings is a sign of virus) Do I burn, incenerate and cremate this plant so it cant contaminate others?
Also notice the white mappings on the pseudo bulbs. Does it have a fungus? it is also present in the roots.
Otherwise it is continuosly producing new shoots...
Attached Thumbnails
coelogyne-marthae.jpg   002.jpg   003.jpg  

Last edited by Anky; 06-26-2011 at 02:24 PM. Reason: spellings
Reply With Quote
  #2 (permalink)  
Old 06-26-2011, 07:22 PM
Greybeard's Avatar
Executive Senior Member
PhotobucketPhotobucketPhotobucketPhotobucket
 
Join Date: May 2011
Location: Ohio
Posts: 1,109
Images: 9
Thanks: 1,650
Thanked 579 Times in 449 Posts
Greybeard is on a distinguished road
To be honest I'm not real sure on this one, I have not had to deal with a fungus problem, knock on wood, the first thing I would do if there is any doubt is quarintine the plant asap. Next try to find more threads on fungus problems but also bacterial infections as well, I know peroxide mignt work if it is bacteria and I'm pretty sure there are fungicides out there too. With any luck a more knowledgable member will be to help with this as I do not want to steer you wrong. The plat looks pretty good for now and new growth at least means if it is sick it is fighting to live. Good luck
__________________
"May you have the hindsight to know where you've been, the foresight to know where you are going, and the insight to know when you have gone too far"-Irish Blessing
Bret ~
Reply With Quote
The Following User Says Thank You to Greybeard For This Useful Post:
  #3 (permalink)  
Old 06-27-2011, 01:37 AM
terra_australis's Avatar
Executive Senior Member
PhotobucketPhotobucketPhotobucketPhotobucket
 
Join Date: Mar 2010
Location: Wollongong, NSW, Australia
Posts: 1,037
Thanks: 10
Thanked 592 Times in 331 Posts
terra_australis is on a distinguished road
Nah, just looks fungal to me... I had a bunch of my plants exhibit these symptoms a couple of days after moving them into my greenhouse. I think it was just a bit too hot and humid during the day and too cold and stagnant at night. Try to increase air movement so that condensation doesn't sit on the leaves..
__________________
Dan
Reply With Quote
The Following 2 Users Say Thank You to terra_australis For This Useful Post:
Greybeard (06-27-2011)
  #4 (permalink)  
Old 06-27-2011, 01:40 AM
orchids4me's Avatar
Super Moderator Photobucket
Photo Sharing and Video Hosting at PhotobucketPhoto Sharing and Video Hosting at PhotobucketPhoto Sharing and Video Hosting at PhotobucketPhoto Sharing and Video Hosting at Photobucket
 
Join Date: Apr 2010
Location: East bay area, California.
Posts: 10,832
Thanks: 10,154
Thanked 4,422 Times in 3,810 Posts
orchids4me is on a distinguished road
To me this appears to be a fungal/bacterial issue.
A good sestemic will help. Physan 20 perhaps.
Tell us how you are growing this... Environmental conditions light- window/fixtures, air movement, temps day/night, humidity levels. Are you growing it indoors or out doors? We may beable to help you make adjustments here if needed that caused this to arise.
Those also may have been older big bites that became infected... Did you have a prior problem or current problem with any bugs ?
__________________

Daisy 2003 -2013
Life is too short.... Buy more orchids!!!!

Emmaye

Last edited by orchids4me; 06-27-2011 at 01:42 AM. Reason: add more
Reply With Quote
The Following 2 Users Say Thank You to orchids4me For This Useful Post:
Greybeard (06-27-2011)
  #5 (permalink)  
Old 06-27-2011, 02:37 AM
kmarch's Avatar
V.I.P Member
PhotobucketPhotobucketPhotobucketPhotobucket
 
Join Date: Feb 2007
Location: Melbourne Australia
Posts: 12,937
Images: 1
Thanks: 4,192
Thanked 5,449 Times in 3,014 Posts
kmarch has a reputation beyond reputekmarch has a reputation beyond reputekmarch has a reputation beyond reputekmarch has a reputation beyond reputekmarch has a reputation beyond reputekmarch has a reputation beyond reputekmarch has a reputation beyond reputekmarch has a reputation beyond reputekmarch has a reputation beyond reputekmarch has a reputation beyond reputekmarch has a reputation beyond repute
Re: the leaves, it's not viral. At least I'd be astounded if it was. These just aren't virus symptoms. Treat with a fungicide of you wish and increase air circulation around your plant.

Re: the name, there's no plant by the name of Coelogyne Martae. Could it possibly be Coelogyne marthae (note spelling and capitalization)?
Reply With Quote
The Following 2 Users Say Thank You to kmarch For This Useful Post:
Greybeard (06-27-2011)
  #6 (permalink)  
Old 06-27-2011, 03:05 AM
Anky
Guest
 
Posts: n/a
you are right KMARCH I just dont know how to spell heh...Emmaye; it is indoors and by the window sill above the kitchen sink east sun...very humid if I cook and I water this only if it is about to get dry; I dont let it get bone dry at all...the medium is packed tight and finer than my catts and my phals...maybe I will replant it and put a sterile medium then spray it with the "best stuff ever". I bought a couple of virus tester kit from Ebay arriving in 2 days...just to have a peace of mind...
Reply With Quote
  #7 (permalink)  
Old 06-30-2011, 10:23 PM
Anky
Guest
 
Posts: n/a
WHEW! Negative on the virus test kit ! YEEEY! My neem oil arrived and I painstakingly wiped the leaves front and back with the help of cotton balls; the media and the pseudobilbs are doused by the oil and I ran water over it on the sink to let the oil go to the very bottom of the pot...I put it a few feet away from the window sill to deflect sunburn and wait for the best !
Reply With Quote
  #8 (permalink)  
Old 07-01-2011, 02:36 PM
orchidaddict789's Avatar
Senior Member
 
Join Date: Nov 2005
Location: Maryland
Posts: 933
Thanks: 661
Thanked 759 Times in 338 Posts
orchidaddict789 is on a distinguished road
It's a fungal problem. I've the exact same thing happening to my zygopetalum leaves, and I cut off the worst affected areas and sprayed with fungicide.
__________________
Orchids...
Reply With Quote
The Following User Says Thank You to orchidaddict789 For This Useful Post:
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is this a virus? boxerfan Orchid Pests and Diseases 1 03-14-2011 04:38 PM
Virus or not? psyc1210 Orchid Pests and Diseases 12 03-10-2011 07:43 AM
virus? boxerfan Newbie Questions 4 03-21-2009 10:24 AM
Maybe another virus? patticake Orchid Pests and Diseases 9 02-22-2009 06:47 PM
Is this a virus? norris Orchid Pests and Diseases 18 02-20-2009 04:50 PM






Free Vote Caster from Bravenet.com Free Vote Caster from Bravenet.com


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0
Orchid Forum

vBskin developed by: CreationLab