[NAFEX] Grape vine attachments

Hal Love lovehd at comcast.net
Tue May 29 16:38:29 EDT 2007

Sounds like phylloxera galls, although they are usually on the underside of the leaves. The leaf galls are usually not a problem on Catawba, which is only mildly susceptible. 

Did they look like this? http://www.ppdl.purdue.edu/PPDL/images/grape_phyllox-leaf_abax.jpeg


  ----- Original Message ----- 
  From: Shirley Murphy 
  To: nafex 
  Sent: Tuesday, May 29, 2007 1:08 PM
  Subject: [NAFEX] Grape vine attachments

  My Catawba grape vine appears to be healthy but new leaves have 1/2cm long vertical soft budlike attachments on the upper surface.  Looking through a loupe they appear green with red streaks.   I cut one open to find that it is hollow inside.  No insect activity is apparent.  I have looked through some books including "The Grape Grower" and cannot find any such description.  I am located in SW Tennessee.  Does anyone have any  thoughts on what they might be and any suggestions of what if anything I should do?  If they are harmful I would like to control them with the least toxic means.  If they are beneficial I would like to encourage them.  
  Shirley Murphy


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