-4- 



Repeated treatments will be needed. There is no waiting period between treatment with 

 carbaryl and the harvest of tomatoes. Tomato hornworms can also be controlled by using 

 the same spray. But if hornworms are the only problem, hand-picking is usually satis- 

 factory. 



FLY CONTROL AT COUNTY FAIRS 



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. 



A few days before the fair starts, spray livestock sheds, outdoor privies, empty food 

 tents, and other buildings that may harbor flies with dimethoate (Cygon) , fenthion (Bay- 

 tex) or Ravap. A farm crop sprayer, equipped with a lead of hose and a spray gun, can 

 be used for this purpose. Apply the spray to the ceilings and walls to the point of 

 runoff. Most rotary pumps on these sprayers can be adjusted to operate at 250 to 300 

 pounds of pressure. If the water pressure is good (30 p.s.i. or more), a spray gun 

 that fits on the end of a garden hose will do a good job of applying the insecticide. 



Sprays should also be applied to refuse containers, garbage cans, and the like before 

 and during the fair. A couple of men with compressed-air tank sprayers can do this job. 



Flies are attracted from great distances to animal waste and food odors. These flies 

 are not killed until they land on a treated surface. For quick knockdown of these in- 

 coming flies in animal shelters and other places, use a small electric fogger with oil-! 

 or water-base pyrethrum, dichlorvos (DDVP) , or naled (Dibrom) . These fogs are best ap- 

 plied in the early morning when no people are around. Animals need not be removed, 

 although horses may be frightened by the fog. 



Urge that food stands keep some pyrethrum or dichlorvos in a pressurized spray can for 

 quick kill of 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 stand- 

 ards of cleanliness. 



WEEDS 



PROPERLY HANDLED SPECIMENS AID IDENTIFICATION 



To help us provide prompt and correct answers to questions concerning weed identifica- 

 tion and control, please send your specimens and questions directly to the appropriate 

 subject-matter specialist: 



Field crops: Ellery L. Knake, N-305 Turner Hall. (217) 333-4424 



(Marshal McGlamery is on a year's leave in Minnesota) 



Vegetable crops: Herb Hopen, 206 Vegetable Crops. (217) 333-1967 



Turf: Tom D. Hughes, 104 Floriculture. (217) 333-8707 



Forestry: Ted W. Curtin, 211 Mumford Hall. (217) 333-2777 



Aquatics: Robert C. Hiltibran, 273 Natural Resources. (217) 333-6889 



Specimens that arrive in good condition are easier to identify. Clean the soil from 

 the roots and wrap the roots in a moist, paper towel. Leave the top of the plant ex- 

 posed. You can put the roots in a plastic bag, but do not put the whole plant in 



i 



