-3- 



of termites are straight, those of ants are elbowed, 

 major differences. 



The diagram below shows the 



If swarms of flying termites appear, check for mud tubes on the inside and outside 

 of foundation walls. Many termite problems are extremely complicated and require 

 the services of an experienced exterminator. 



TERMITE or ANT? the differences are: 



TERMITE 



WINGS(IFPRESENT) 

 MANY SMALL VEINS 

 BOTH WINGS 



SAME SIZE 



NTENNA 



NOT ELBOWED 



ANTENNA ELBOWED 



ANT 



"CHEMISE" 

 V WAIST 



"HOUR- 

 GLASS 

 WAIST 



WINGS 



(IF PRESENT) 

 FEW VEINS 

 ^HIND WINGS SMALLER THAN 

 FRONT WINGS 



WANTED — WIREWORM PROBLEM FIELDS FOR INSECTICIDE EVALUATION 



Dr. Ralph Sechriest, Entomologist, Illinois Natural History Survey, wishes to locate 

 cornfields with wireworm infestations to evaluate various soil insecticides used for 

 corn. If you know of a field, or fields, with a wireworm problem, please contact Dr. 

 Sechriest, 167 Natural Resources Building, Urbana 61801. Telephone: (217) 333-6826. 



WEEDS 



CONTROLLING PERENNIALS 



Quackgrass . It is still not too late to think about a quackgrass control program in 

 corn. AAtrex (atrazine) provides the best control. Use 5 pounds of AAtrex 80W or 4 

 quarts of AAtrex 4L (4 pounds per-acre, active ingredients). These materials can be 

 applied either as a single, preplow application or as a split application- -half pre- 

 plow, and half at planting time. The split application provides better control of 

 annual weeds. When you use a high rate of atrazine, plan on planting corn the fol- 

 lowing year. 



If you do not want to grow corn next year, you can use the regular preemergence rate 

 of AAtrex preplow and follow with two cultivations during the growing season. The 

 lower atrazine rate will allow you to grow soybeans, but not oats. You can also sub- 

 stitute Dowpon for the preplow treatment and use atrazine preemergence. However, this 

 may delay planting because Dowpon used preplow requires a waiting period of four to 

 five weeks before planting corn. 



Yellow nuts edge . Nutsedge can be controlled in soybeans by combining an aggressive til- 

 lage program with a preplant- incorporated application of Vernam (vernolate) or Lasso 

 (alachlor) . Using narrow rows will also help soybeans "shade-out" nutsedge. 



