The horn fly project has been an on going project that is conducted on an annual basis to see how different insecticidal ear tags perform from year to year. The following information is from the summer of 2013. 

 

Project Details

This year we had two different locations that were tagged, Valliant OK and Stillwater OK. Fly counts are taken weekly from five groups of twenty cattle each. Three groups were treated with different insecticidal ear tags and one control group in Valliant OK. Stillwater had five different treated groups and one control group.

 

Stillwater Horn Fly Data

• Weeks 1-11

  

• Week 1

  

• Week 2

  

• Week 3

  

• Week 4

  

• Week 5

  

• Week 6

  

• Week 7

  

• Week 8

  

• Week 9
  
• Week 10
  
• Week 11
  

 

Valliant Horn Fly Data  

• Week 1-12
  
• 2013 Insecticide Ear Tag Trial Valliant, OK
  
• Week 2

  

• Week 3

  

• Week 4

  

• Week 5

  

• Week 6

  

• Week 7

  

• Week 8

  

• Week 9

  

• Week 10
  
• Week 11
  
• Week 12
  
• Week 13
  

 

 

Ideal Rotation of Insecticidal Products for Horn Fly Control

The ideal rotation of products is based on the chemical class of the product. Currently all insecticides used for horn fly control fall in three categories: Pyrethriod, Organophosphate, or Macrocyclic Lactone.

 

 

The chemical class needs to be rotated every time the animals are treated. This could be a yearly rotation with insecticidal ear tags or a monthly rotation of sprays or pour-ons or any monthly combination.

 

Insecticide Ear Tag Information

• Information to know before buying ear tags and different types of insecticidal ear tags

 

Actual Fly Counts

The following pictures are actual live cattle with estimated fly numbers to allow you to compare to your animals at home.