cattle. A canvas or burlap head-oiler or back-oiler, saturated with a solution of 

 5-percent toxaphene in oil, will provide some relief against face flies. Do not ap- 

 ply toxaphene to beef cattle within 28 days of slaughter. 



HOMEOWNER PROBLEMS 



Bagworms can now be found in the southern half of Illinois. They are feeding on sev- 

 eral species of deciduous trees, as well as on evergreens. The bags in which the worms 

 live were about 1/4 inch long this past week. The worms will now feed voraciously and 

 grow accordingly. If you are going to spray for them, do so right away. Use carbaryl 

 (Sevin) , malathion, or Bacillus thuringiensis (Biotrol, Dipel, or Thuricide) as a spray, 

 and apply for thorough coverage. Do not use malathion on canaert juniper. 



Armywc 

 lights 



tform moths are numerous in and around lawn areas , and are flying around outdoor 

 lights. These tan moths have emerged from grain fields in the southern third of the 

 state and are now migrating northward. They can be mistaken for sod webworm moths. 

 The sod webworm moth is much smaller and is buff colored, but appears to be white when 

 flying. Do not treat a lawn area because of the presence of armyworm moths. 



AMITROLE AND AMITROLE-T FOR POISON IVY CONTROL 



The first step in poison ivy control is proper identification. Sometimes, however, 

 that step may prove to be difficult because the plant can assume many different ap- 

 pearances . 



Poison ivy may vine on fences, walls, or trees. It may spread along the ground, or 

 it may even appear as an erect shrub. Each leaf is made up of three leaflets. They 

 may be either glossy or dull green and may have smooth, toothed, or lobed edges. Vari- 

 ations can occur even on the same plant. 



Amitrole or amitrole-T provide effective herbicide control of poison ivy. Apply the 

 materials any time after the plant leaves have reached full size. Soak the plants 

 thoroughly with the spray, but do not let the material contact desirable grass or 

 broadleaf plants. 



Aerosol cans containing amitrole are convenient for treating small areas. A small, 

 compressed-air sprayer is best for larger areas. 



Apparently, there is no absolute immunity to poison ivy infection, although some peo- 

 ple are more susceptible than others. Persons who consider themselves immune may be- 

 come more susceptible after sufficient exposure. Clothing, garden tools, and pets 

 can become contaminated and can serve as sources of the irritant. Smoke from burning 

 poison ivy may also carry the toxin. 



PLANT DISEASES 



DUTCH ELM DISEASE 



Recent publicity has indicated that benomyl (Benlate, a DuPont fungicide) is being 

 recommended for the control of Dutch elm disease by authorities of one state univer- 

 sity and a research institute. Benomyl has been tested for Dutch elm disease control 

 by the Illinois Natural History Survey during the past three years. It has been in- 

 corporated in the soil, injected into tree trunks, and sprayed on foliage of elms in- 

 oculated with the Dutch elm disease fungus. 



