SMALL GRAINS 



English grain aphids are showing up on the wheat heads in some fields , particularly 

 on the east side of the state. The wheat is maturing rapidly, and these insects 

 usually do very little damage after the kernels approach the dough stage. Therefore, 

 insecticides should be used only in fields that are maturing exceptionally late. 

 Even there, the average aphid count should be at least 25 per wheat head- -an aver- 

 age of 50 may be more realistic. 



LIVESTOCK INSECTS 



Barn flies are becoming bothersome, particularly in central and southern sections. 

 The population is expected to increase rapidly from now on, because of the excessive 

 moisture and high temperatures. 



The house fly and the blood-taking stable fly (needle-like beak) make up the barn-fly 

 complex. Both flies spend 90 percent of their time sitting on barn walls, support 

 posts, fences, and the like, and only about 10 percent of their time on the animals. 

 Therefore, there is no need to spray cattle kept on dry lot. Begin control efforts 

 now before the flies become too numerous . The following program will provide good 

 results: 



1. Practice good sanitation . Eliminate fly-breeding materials- -such as manure, rotting 

 straw, wet hay and feed- -as often as possible. Spreading this refuse where it can 

 dry makes it unsatisfactory for fly development. 



2. Apply a barn spray to the point of run-off on the ceilings and walls of all live - 

 stock buildings . Also spot-spray outside around windows and doors and along 

 fences in the lot. The following insecticides are suggested for this purpose: 



Amount 

 per 100 



gallons Length of 

 Insecticide of water control 



Diazinon, 50-percent wettable powder. . . .16 pounds 2 to 4 weeks 



Dimethoate, 23-percent (Cygon) liquid 



concentrate 4 pounds 4 to 6 weeks 



Revap (Rabon plus dichlorvos), liquid 



concentrate 4 gallons 4 to 6 weeks 



Ronnel, 24-percent (Korlan) liquid 



concentrate 4 gallons 1 to 5 weeks 



Ronnel, 25-percent wettable powder 52 pounds 1 to 3 weeks 



Use only ronnel in poultry houses. All materials are cleared for use in dairy, 

 beef, swine, sheep, and horse barns. Cover feed and water troughs before spray- 

 ing. Do not spray animals with these materials at the dosages suggested. Remove 

 animals before spraying the barns. Do not spray the milk storage room. 



