-2- 



Garden we"b worms , greenish spotted worms, are damaging late soybeans in 

 some areas. They strip the leaves, and the webbing that ties the leaves together 

 is easily seen, In some cases it is difficult to penetrate the wehhing. 



Toxaphene, 1 l/2 pounds per acre, will usually control wehworms provided 

 the spray penetrates the webbing. 



These webworms are also feeding on recently seeded alfalfa. If the al- 

 falfa is not to be used for hay, toxaphene may he used. If it is to be used for 

 hay or pasture this fall, apply 1 l/2 pounds of methoxychlor per acre, but allow 

 one week to elapse "between application and harvest. 



Face fly populations are increasing and are the highest they have been 

 so far this year. Ciodrin oil-hase sprays should he applied for control where 

 cattle are handled daily. For "beef cattle, use toxaphene in a "backrubber. Do 

 not apply toxaphene within 28 days of slaughter. 



Beet leafhoppers were found for the first time on horseradish in the 

 East St. Louis area. We suggest applying malathion, Sevin or DDT to help prevent 

 spread of "brittle root. 



Sod webworm moth flight reached its peak this week in some areas of cen- 

 tral and eastern Illinois. Moths have been depositing eggs and will continue for 

 another few weeks. They will deposit them in the most luxuriant lawns and will 

 avoid dried-out, "brown lawns. If you suspect moths of depositing eggs in your 

 lawn, apply control measures this week. Use diazinon or Sevin as granules or 

 sprays . 



Caution ; Before applying insecticides, read the labels carefully and 

 follow all precautions. This will not only insure personal safety, but will also 

 eliminate insecticide residue hazards. 



For a list of general precautions to use when handling and applying 

 pesticides, write to 280 Natural Resources Building, University of Illinois, 

 Urbana, Illinois, for "Safe Use of Pesticides." 



* * ■* -* •# 



This weekly report was prepared "by H. B. Petty, Steve Moore and C. E. 

 White, Illinois Agricultural Extension Service and Illinois Natural History Survey, 

 in cooperation with the USDA Agricultural Research Service, Plant Pest Control 

 Branch, from information gathered "by entomologists and cooperators who send in 

 weekly reports from their own localities. 



SPECIAL NOTE TO FARM ADVISERS 



We are again "being asked ahout lindane vaporizers as a method of con- 

 trolling insects. We do not recommend them. We consider them ineffective and a 

 possible health hazard in the home. Some of them have had USDA label approval 

 under protest and may soon have the label withdrawn. 



We are rerunning Insecticide Dealers' Newsletter, Vol. Ill, No. 6, 

 November 15, 1963, entitled "Health Hazards of Electrical Vaporizing Devices for 

 Insecticides." A copy is being sent to you. 



