

-4- 



lights that shine directly out of an opening should also be avoided. Where possible, 

 use yellow bulbs outdoors. Also a bright light set in a tree, on a pole, or the cor- 

 ner of a building some distance from doors and windows will attract most of the insects 

 and help reduce the number that enter the building. 



Sod webworm moths . These are very numerous in many lawns. This is a buff- colored moth 

 They lay their eggs as they fly over lawns in the evening. Lawn webworm larvae are be 

 ginning to hatch from these eggs and are beginning to feed on grass blades in lawns. 



If these webworms are numerous, irregular brown patches will begin to appear in the 

 lawn. Other symptoms of webworm activity include the presence of robins feeding on 

 the lawn. If examined closely, the lawn area will contain burrows with fresh grass 

 clippings as well as webworm larvae. These larvae are dusky-green, with a dark brown 

 head and brown spots on the body. 



For control, apply carbaryl (Sevin) , diazinon, or trichlorfon (Dylox) as a spray or 

 granules. 



Oystershell scales . The egg hatch is complete in central and southern Illinois. The 

 young crawlers set up housekeeping on lilac, dogwood, birch, and other shrubs and trees; 

 They suck the juices from the plant; if abundant, they can seriously retard growth and ' 

 even kill the plant. This is the second generation of this scale, and the build-up is' 

 often heavy. If you have had a history of problems in your yard, spray the shrubs 

 thoroughly with malathion, using 2 teaspoons of the 50- to 57-percent liquid concen- , 

 trate per gallon of water. Target dates for spraying are right now in the southern 

 sections, August 10 in the central section, and August 20 in the northern section. 



Diazinon and dimethoate may also be used. Follow the directions on the label. 



Mimosa webworms . This pest continues to infest mimosa trees in southern Illinois and 

 honey locust trees throughout the state. These webworms web leaves together and feed ■ 

 on the leaves within the webbing. Spraying with carbaryl (Sevin) or malathion will 

 provide control. A repeat application after a few weeks may be necessary. 



Cottony maple scales . Egg -hatch is completed, and the young can be found on the under - 

 sides of maple leaves. If the maple tree has had cottony masses on the branches and 

 treatment is necessary, spray now with malathion. They will continue to remain on the 

 leaves through August. 



WEEDS 



CONTROLLING POISON IVY 



Poison ivy is still a problem in many camps and recreation areas, but there is still 

 time to spray this year. One of the most effective treatments is amitrole or 

 amitrole-T (Amino triazole, Weedazol, Cytrol , Amitrol-T) . 



A combination wall poster and circular concerning the identification and control of 

 poison ivy is available from the Office of Publications, 125 Mumford Hall, Urbana, 

 Illinois 61801. Ask for Circular 850, Controlling Poison Ivy. 



Check with camp directors and others in charge of recreation areas. They will be glad 



VOU did. 



