-2- 



Corn borer : Borer development is slow this year. Pupation of overwinter- 

 ing borers and moth emergence could be later than usual. Thus borer survival in 

 early-planted fields could be quite high. However, with an anticipated large acre- 

 age of early-planted corn, first- generation populations may be diluted, and only a 

 few fields may have high concentrations. But with good survival and favorable 

 weather, second generation could be a problem. 



Caution : Before applying insecticides, read labels carefully and follow 

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

 nate insecticide residue hazards. 



Special note to Farm Advisers : Please send us, as in previous years, 

 your estimates of the percent of the corn crop that was planted on May 2, 9, l6, 

 23, and 30. This information will help us anticipate abundance of various corn in- 

 sect pests. 



#*##*■*###* 



This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- 

 tension Service and Illinois Natural History Survey, in cooperation with the USDA 

 Agricultural Service, Plant Pest Control Branch, from information gathered by ento- 

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



HBP:bb 

 5/5/61 



