Web-worms may attack fall- seeded alfalfa. In severe infestations the 

 small seedlings may "be killed. If the worms are numerous and damaging plants, 

 apply 1 l/2 pounds of DDT or toxaphene per acre "before webbing "becomes general. 

 Do not use for hay or pasture this fall. If the seeding is to be pastured or 

 cut for hay, use 1 l/2 pounds of methoxychlor or sevin per acre. Allow J days 

 "between treatment and harvest or pasturing when using methoxychlor. There is no 

 waiting period for sevin. 



House fly populations have increased greatly during the past few weeks. 

 A continued increase can he expected until cool weather arrives. Follow these 

 three steps: 



1. Practice good sanitation; clean fly-hreeding areas as often as is 

 practical. 



2. Apply a barn spray material, such as dimethoate, diazinon or ronnel, 

 to the point of runoff to the ceilings and walls of all livestock buildings except 

 poultry houses. Use only ronnel in poultry houses. 



3. Supplement the spray application with spray bait applications, using 

 the same insecticide with a corn sirup and water solution (2:1 ratio). Other in- 

 secticide baits may be used as supplementary measures. 



Mosquitoes are common in some areas, and homeowners can help by follow- 

 ing these suggestions: 



1. Eliminate any standing water such as accumulates in eave troughs, 

 children's toys, cans, old tires and other places. 



2. Spray shrubbery and tall grass with malathion. Use 1 tablespoon of 

 the 50-57 percent emulsion concentrate per gallon of water. Weekly treatments 

 may be needed as continued flights of mosquitoes occur. 



3. Fog or use a fine spray of 0.1$ pyrethrin in water or oil for tem- 

 porary relief at cookouts, picnics, camping or even indoors if needed. 



h. When entering mosquito-infested areas, use a repellent on all ex- 

 posed parts of the body. The best mosquito repellent available is diethyl tolua- 

 mide (DET). 



Crickets, spiders and ants may be a problem at any time. To prevent 



these insects from entering the house, apply a water-base spray of 2$ chlordane 



or 0.5$ dieldrin to the outside foundation. Spray to the point of runoff the area 



from the sill to the soil level around the entire house. Pay particular attention 



to areas under porches and around steps. Approximately 3 to 5 gallons of diluted 

 spray is adequate for the average home. Do not apply directly on shrubbery or 

 flowers. 



Caution : Before applying insecticides, read the labels carefully and 

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

 eliminate Insecticide residue hazards. 



This weekly report was prepared by H. B. Petty and Steve Moore, Illinois 

 Natural History Survey and Illinois College of Agriculture, in cooperation with the 

 USDA Agricultural Service, Plant Pest Control Branch, from information gathered by 

 entomologists and cooperators who send in weekly reports from their own localities. 



HBPrje 

 8/I6/63 



