NOT FOR PUBLICATION- -SPECIAL NOTE TO COUNTY EXTENSION ADVISERS 



Fly control at county fairs : We have modified the following portion of a Purdue 

 Insect Newsletter on this subject to fit Illinois conditions: 



1. Fair officials will need to be sure that manure, garbage, refuse, and soft 

 drink bottles are removed from the grounds every day. This is a must. 



2. Just before the Fair starts, spray livestock sheds and other buildings that 

 may harbor flies with dimethoate (Cygon) , diazinon, or ronnel (Korlan) . A 

 farm crop-sprayer, equipped with a lead of hose and a spray gun, can be used 

 for this purpose. Most rotary pumps on these sprayers can be adjusted to 

 operate at 250 to 300 pounds of pressure. 



If the water pressure is good, a spray gun that fits on the end of a hose 

 will do a good job of applying the insecticide. 



Sprays can also be applied to refuse containers, garbage cans, etc. --before 

 and during the Fair. A couple of boys with compressed-air sprayers can do 

 this job. 



3. The clip-on foggers that attach to a gallon can of oil-base pyrethrins and/or 

 DDVP fly spray will do a good job of killing adult flies in animal shelters. 

 These fogs are best applied in the early morning when no people are around. 

 Animals need not be removed, although horses may be frightened by the fog. 



4. Urge that food stands keep some pyrethrins and/or DDVP household pressurized 

 spray cans on hand, to kill adult flies. These sprays should be used at night 

 after the stands close. The local health department should insure that all 

 stands maintain the required standards of cleanliness. 



READ THE LABEL AND FOLLOW ALL PRECAUTIONS 



This weekly report was prepared as follows: 



Insects: H.B. Petty, Steve Moore, Roscoe Randell, Don Kuhlman, and Stephen 

 Sturgeon, University of Illinois College of Agriculture and Illinois Natural 

 History Survey. 



Plant Diseases: M.P. Britton and M.C. Shurtleff , Department of Plant Pathology. 



Weeds: Ellery Knake, Department of Agronomy, and Robert Hiltibran, Illinois 

 Natural History Survey. 



Ag Communications: Del Dahl . 



The information for this report was gathered by these people, staff members, 

 county Extension advisers, and others, in cooperation with the USDA Agricultural 

 Research Service, Plant Pest Control Branch. 



