Aphid Alert 1999, No. 2a, June 16

Summer 1999: Aphid trapping data

Results reported in this issue of Aphid Alert are total captures of winged aphids and species identifications for the following locations and sampling interval end-dates. Additional sampling locations will be reported in the next issue of this newsletter.

This was our first week of aphid trapping. Only 4 locations had traps operating during this week. Additional locations will be added in future weeks. Very few winged aphids were flying.

Also, potato leafhoppers are abundant in 1999. Potato leafhoppers do not transmit potato pathogens, but feeding by this insect can severely damage potatoes. Choose insecticide chemistries and rates with caution to avoid flaring aphids.

We maintain a list of e-mail addresses to facilitate communication with those of you interested in receiving updates about this research or any resulting advisories sooner than this information can be delivered by mail or even before it is posted on the WWW. If you wish your name added to receive such messages please send us an e-mail at radcl001@umn.edu. In the message, write "Aphid Alert subscribe."

Errors: If you find errors, typographic or factual, we would appreciate having them called to our attention so they can be corrected. Phone: Robert Suranyi (218) 773-3346 or Ted Radcliffe (612) 624-773 or send an e-mail to radcl001@umn.edu.

 

Results

Minnesota: Hollandale,Little Falls
North Dakota: Linton, Mandan

Hollandale, MN, week ending 16 June

  Aphid species # captured % of total capture
PLRV/PVY vectors green peach aphid    
  potato aphid    
       
PVY vectors bird cherry-oat aphid 1 100
  corn leaf aphid    
  English grain aphid    
  greenbug    
  sunflower aphid    
  thistle aphid    
  turnip aphid    
       
Identified non-vector species      
       
Unidentified      
       
  Total 1  

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Little Falls, MN, week ending 14 June

  Aphid species # captured % of total capture
PLRV/PVY vectors green peach aphid    
  potato aphid    
       
PVY vectors bird cherry-oat aphid 5 55.5
  corn leaf aphid    
  English grain aphid    
  greenbug    
  sunflower aphid    
  thistle aphid    
  turnip aphid    
       
Identified non-vector species   2 22.2
       
Unidentified   2 22.2
       
  Total 9  

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Linton, ND, week ending 13 June

  Aphid species # captured % of total capture
PLRV/PVY vectors green peach aphid    
  potato aphid    
       
PVY vectors bird cherry-oat aphid    
  corn leaf aphid    
  English grain aphid 2 18.2
  greenbug    
  sunflower aphid    
  thistle aphid    
  turnip aphid    
       
Identified non-vector species   4 36.4
       
Unidentified   5 45.5
       
  Total 11  

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Mandan, ND, week ending 13 June

  Aphid species # captured % of total capture
PLRV/PVY vectors green peach aphid    
  potato aphid    
       
PVY vectors bird cherry-oat aphid    
  corn leaf aphid    
  English grain aphid    
  greenbug    
  sunflower aphid 1 25
  thistle aphid    
  turnip aphid    
       
Identified non-vector species      
       
Unidentified   3 75
       
  Total 4  

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