Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?
Login
User Name
Password   


Registration is FREE. Click to become a member of OrchidBoard community
(You're NOT logged in)

menu menu

Sponsor
Donate Now
and become
Forum Supporter.

Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
Register Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight? Members Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight? Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight? Today's PostsOncidium ornithorhynchum - leaf tips: bacteria or rot or blight? Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight? Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
Go Back   Orchid Board - Most Complete Orchid Forum on the web ! > >
Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 10-28-2014, 10:42 AM
An_DS An_DS is offline
Jr. Member
 

Join Date: Oct 2014
Posts: 20
Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?
Default Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?

This Oncidium has been in my collection for a long time (one of my first plants, 10 years ago). Last year I divided the plant. Since at least one year (but more is possible), tips from new leaves go bleak, as you can see in the pictures below.
First it doesn't look like drying of the tip, it turns light brown and looks a bit like a wet tip. Because of this, I think it could be bacterial or a rot. However, it doesn't smell or becomes soft tissue.
Attached Thumbnails
Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?-onc1-jpg   Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?-onc2-jpg   Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?-onc3-jpg   Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?-onc4-jpg  
Reply With Quote
  #2  
Old 10-28-2014, 09:36 PM
WhiteRabbit WhiteRabbit is offline
Senior Member
 

Join Date: May 2008
Zone: 9a
Location: Nor Cal
Posts: 26,634
Default

Reply With Quote
  #3  
Old 10-28-2014, 10:15 PM
tarev tarev is offline
Senior Member
 

Join Date: Feb 2010
Zone: 9b
Location: San Joaquin County, CA
Posts: 674
Default

Maybe leaf edema..roots takes up more water than the leaf can transpire.
Reply With Quote
  #4  
Old 10-29-2014, 05:33 AM
camille1585's Avatar
camille1585 camille1585 is offline
Administrator
 

Join Date: Oct 2007
Location: middle of the Netherlands
Posts: 13,777
Default

Leaf edema usually appears are raised lumps on the leaves, so I don't think it's that. My guess would be bacterial as well.
__________________
Camille

Completely orchid obsessed and loving every minute of it....

My Orchid Photos
Reply With Quote
  #5  
Old 10-29-2014, 08:21 AM
Ray's Avatar
Ray Ray is offline
Senior Member
 

Join Date: May 2005
Member of:AOS
Location: Oak Island NC
Posts: 15,204
Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight? Male
Default

I would speculate Erwinia, which is likely to be in the entire growing environment, not just that plant.

I would get some Physan and spray every plant and the area they are in.
__________________
Ray Barkalow, Orchid Iconoclast
FIRSTRAYS.COM
Try Kelpak - you won't be sorry!
Reply With Quote
  #6  
Old 10-29-2014, 07:10 PM
euplusia euplusia is offline
Senior Member
 

Join Date: Jul 2007
Zone: 7a
Location: Southwest of Germany
Posts: 2,064
Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight? Male
Default

Whether fungus or bacterium, take a sharp razor blade and cut away the sick tips 1 cm away from infection in healthy tissue as first aid.
Often an infection follows imbalanced nutrition and a lack of light and moving air. Im many cases roots are poor.
Here the leaf tissue looks pale. So I think of a symptom of deficiency. A weakly weekly fertilizing schedule is helpful. The first malnutrition is a lack of calcium, which appears after months to years in cultivated plants.
Reply With Quote
Post Thanks / Like - 1 Likes
Likes Orchid Whisperer liked this post
  #7  
Old 10-31-2014, 04:44 AM
An_DS An_DS is offline
Jr. Member
 

Join Date: Oct 2014
Posts: 20
Oncidium ornithorhynchum - leaf tips: bacteria or rot or blight?
Default

Thanks for the advice.
The strange thing is that the plants don't die, after looking water soaked, the leaf starts to dry. I think, in case of a baterial infection, things would spread very fast and cause death. I cut off the leave parts yesterday.
Physan, however is not available in Belgium (or even Europe), I will look at some fertilizer. Would a 3% peroxide spray treatment be of any help?
Reply With Quote
Reply

Bookmarks

Tags
leaf, oncidium, rot, tip, tips, blight, bacteria, ornithorhynchum


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Oncidium ornithorhynchum culture advice? Val Beginner Discussion 5 09-27-2012 02:51 AM
Dracula leaf tips VickiC Beginner Discussion 9 09-12-2008 08:29 PM
Do organic additives cause burned leaf tips? dianecty Beginner Discussion 8 06-20-2008 10:14 AM
Spots/Aerial roots.. Leaf tips Yellow? orchidjunky Beginner Discussion 2 05-14-2008 01:44 AM
yellow/brown spots on leaf tips Sylorna Cymbidium Alliance 6 05-12-2008 11:44 PM

All times are GMT -4. The time now is 09:39 AM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.