Missouri recommendations suggest treating where there is an average of one or more 

 adult midges per head. Two determinations should be made before deciding to apply 

 an insecticide. 



First, make sure midges are present. Look for tiny, orange-colored flies during the 

 early morning hours. It is very difficult to identify how many are present. They 

 may be seen flying around and crawling over the heads at first bloom. 



Second, it is important to time applications so that the first one is applied at 

 approximately 50 percent of the heads have emerged; the secone one, 3 to 5 days lat- 

 er, or by the time 90 percent of heads have emerged from the boot. Two applications 

 may be needed, unless the field is uniform in terms of head emergence. 



For control, use 1/2 pound of diazinon, ethyl parathion, or carbophenothion (Trithion) , 

 or 1-1/2 pounds of carbaryl (Sevin) per acre. Do not apply carbophenothion more than 

 once per season, and do not graze or cut for forage within 21 days after application. 

 There is a 21-day waiting period for carbaryl between application and removing the 

 grain, but no time limitations for forage. 



LIVESTOCK INSECTS 



Face fly populations remain high on pastured cattle. Untreated cattle have an aver- 

 age of 60 to 80 face flies in the northern section, 30 to 60 in the central section, 

 and 15 to 50 in the southern section. Face flies are expected to continue to be a 

 problem for at least the next four to six weeks. Stable flies and horn flies are al- 

 so attacking pastured cattle. In some herds, stable flies are numerous. Cattle on 

 dry lot confinement are not attacked by face flies and stable flies. 



For dairy cattle, apply crotoxyphos (Ciodrin) as a 1- or 2-percent, ready-to-use, 

 oil -base spray at 1 to 2 ounces per animal as often as needed. As an alternative, 

 use a 1-percent, water-base spray at 1/2 pint per animal per week. Spray over the an- 

 imal's head, back, sides, and legs. 



For beef cattle, use Ciodrin as suggested for dairy cattle. A mist blower is a con- 

 venient method of applying these water-base sprays to beef cattle. Only about 2-1/2 

 percent of the spray applied from a mist blower actually impinges on the animals. Do 

 not apply crotoxyphos to cattle within 24 hours of slaughter. 



Dust bags and canvas or burlap face or back oilers, used will and properly operating, 

 effectively control horn flies; but do not control face flies and stable flies when 

 populations are heavy. Check the label precautions given with the insecticide you use 

 in these devices for waiting periods between treatment and slaughter. 



HOMEOWNER INSECTS 



One Japanese beetle was found in Jackson County this summer. This is a new infestation. 



Mosquitoes are annoying people and children in some parts of the state. Homeowners can 

 do a few things to help: 



1. Eliminate standing water in such places as eave troughs, old tires, tin cans, 

 children's toys, storm sewers, and the like. 



2. When needed, sparingly apply a water-base spray containing 0.5-percent malathion 

 (1 ounce of 50- to 57-percent liquid emulsion concentrate per gallon of water) 

 to shrubbery and tall grass. During problem periods, repeat this every week or 

 two. Do not use malathion on canaert red cedar. Also, mow weed patches near chil- 

 dren's play areas. Mosquitoes harbor there during the day. 



