-5- 



problem is not considered extremely serious, and much of the corn recovered sur- 

 prisingly well. However, as an added precaution, it would be well to consider 

 conventional plowing where fields treated with Treflan this year will be planted 

 to corn next year. 



If you used atrazine and oil in June this year, consider planting corn rather than 

 soybeans in the field next year. Applying atrazine relatively late decreases the 

 amount of time for herbicide decomposition and increases the possibility of damage 

 to soybeans next year, especially if the soybeans are planted early. 



READ THE LABEL AND FOLLOW ALL PRECAUTIONS 



This weekly report was prepared as follows: 



Insects: H.B. Petty, Steve Moore, Roscoe Randell , Don Kuhlman, and Stephen 

 Sturgeon, University of Illinois College of Agriculture and Illinois Natural 

 History Survey. 



Weeds: Ellery Knake, Department of Agronomy. 



Ag Communications: Del Dahl . 



The information for this report was gathered by these people, staff members, 

 county Extension advisers, and others, in cooperation with the USDA Agricultural 

 Research Service, Plant Pest Control Branch. 



NOTE TO COUNTY EXTENSION ADVISERS 



This year, we had corn rootworm control demonstrations in 7 counties. These 7 

 advisers applied several insecticides at planting time. We helped rate these 

 plots. Several counties have asked about demonstration plots of standard recom- 

 mendations for next year. We now plan to organize such plots. If you are inter- 

 ested in having one in your county in 1969, select possible fields now. Count 

 the number of beetles per plant or per ear. Find several fields that have more 

 than 10 beetles per plant. One of these may then be selected for next year, de- 

 pending on the ease of obtaining harvest records, the evenness of field, availa- 

 bility, etc. Let us know your plans. 



