If your field warrants the use of an insecticide, we suggest carbaryl (Sevin) or 

 malathion. Bees do not frequent soybean blossoms to any great extent; but if you 

 see honey bees, wait until late in the day to spray. Toxaphene would be safer for 

 use around bees, but farmers complained about erratic results during our last out- 

 break several years ago. 



We have had serious damage from carbaryl to one bee yard surrounded by soybean fields. 

 Be careful to check and see what is in the vicinity before you spray. 



Blister beetles are present in some soybean fields. These soft-bodied, elongated bee- 

 tles may be solid black, black with a gray stripe around the wing covers, grey or 

 brown and yellow striped. They are usually found only in spots, and no control is 

 needed. 



Yellow- striped armyworms are also showing up in soybean fields. When less than full- 

 grown, they are black to brown with a yellow stripe down each side of the back. When 

 full-grown, they have a definite block pattern on the back. Usually, no control is 

 necessary. 



Bean leaf beetles are appearing in numbers in some fields, but are not a problem now. 

 Later, they may feed on pods --which is not a common problem. 



CORN INSECTS 



Coin leaf aphids are still present in many fields. But these populations appear to 

 be decreasing, except in very late fields. 



European corn borers have us stymied. Our first-generation larval survey indicated 

 only a small number, and not much of a second- generation potential. But we know of 

 areas where the first-generation borers were numerous. Moths are common in some of 

 these areas. We have found few eggs on field corn, but there are some small worms. 

 We believe there will be an increase in the number of com borer over last year. To 

 determine the need for treatment, see Bulletin 21 (August 10, 1973). 



Corn rootworms were present this year. Even so, do not blame them for all the corn 

 lodging, which is common. In a few fields, the rootworms did eat the roots; and some 

 lodging resulted. But lots of corn is shallow-rooted, and will tip over now. If you 

 do not find beetles in the fields and see no worm tunnels in the brace roots, root- 

 worms were not the problem. 



Count the rootworm beetles. If you find an average of one or more per ear tip or per 

 plant, plan to use a rootworm soil insecticide next spring if you intend to plant the 

 field in corn again. 



HOMEOWNER INSECT PROBLEMS 



Cottony maple scale crawlers are now sucking plant juices from the leaves of maple 

 trees in many areas of northern Illinois. They are also giving off honey dew, a 

 sticky substance that can be seen on the leaves and that drips from the trees onto 

 sidewalks, cars, or other object underneath. Mature cottony maple scales produce 

 cottony, or popcorn-like, masses on maple branches during the fall and spring months. 



The crawler scales that are present now can be controlled by thoroughly spraying the ( 

 maple foliage with malathion. 



