•2- 



SOIL INSECTS 



There has been some confusion about the cancellation of the aldrin label by the 

 Federal Environmental Protection Agency. It is still legal to use and sell al- 

 drin . 



A challenge has been issued to the manufacturing company to show evidence that 

 the sale and use of aldrin is still justified, and that continued use will be of 

 greater benefit to the consuming public than the hazard to the environment. For 

 this year, using and selling aldrin is legal. This will continue to be the case 

 until a further ruling is made after the conclusion of adequate hearings. That 

 will not occur until after the 1971 season, perhaps even after the 1972 season. 



We do not recommend the use of aldrin or heptachlor in Illinois . In most in- 

 stances, we feel that this will not be profitable, particularly on fields with 

 a history of use. If you do use aldrin or heptachlor, use them only on corn 

 planted on sod fields. Do not use aldrin or heptachlor on dairy farms or where 

 soybeans are to be grown during the year of treatment. Do not grow soybeans in 

 fields where aldrin or heptachlor have been applied for five or more consecutive 

 years. If you use aldrin or heptachlor on corn and lose the stand too late for 

 replanting to corn, do not plant soybeans in that field. 



Our 1969 and 1970 yield records for corn from nineteen demonstration plots (ten 

 with moderate corn rootworm infestations and nine with other insects) show: 



Corn, bu./A. 



Treatment 1969 1970 Average 



Recommended organophosphates 132 109 122 



Recommended carbamates 133 110 123 



Chlorinated hydrocarbons 124 104 116 



Diazinon seed treatment alonef!/ 129 107 120 



Nothing 127 103 117 



a/ Only in sixteen fields. 



HOMEOWNER INSECTS 



Odorous house ants . These are now causing concern. While most ant species only 

 live outdoors in colonies, this species lives both indoors and outdoors. Outdoor 

 nests are generally located beneath stones and boards; indoor nests, underneath 

 floors and in walls . 



To prevent ants, water bugs, spiders, crickets, and other crawling insects from 

 entering your home, spray the outside foundation wall with a 1-percent emulsion 

 of chlordane and water. Purchase chlordane as a liquid concentrate and mix one- 

 half pint of 45-percent chlordane or 10 tablespoons of 72 -percent chlordane in 

 5 gallons of water. Spray the foundation wall from the ground to the sill, or 

 about a foot, to the point of runoff. In addition, spray 3 to 6 inches of soil 

 adjacent to the wall, as well as the expansion joints along porches and steps. 

 Do not spray shrubbery or flowers. The oil in the spray may burn the tender 

 foliage. 



For controlling ants already inside the home, use 0.5-percent diazinon or 0.5- 

 percent Baygon in pressurized spray cans. Spray into all cracks, around base- 

 boards, and other areas where the ants are observed. 



