-6- 



Weeds can also be a serious threat, so carefully weigh the advantages and dis- 

 advantages of using atrazine and oil. If you decide on atrazine and oil, be will- 

 ing to accept the risks involved as well as the benefits. You can reduce risks as 

 much as possible by making uniform and accurate applications. 



Marginal Aquatic Plant Control 



Several species of aquatic plants inhabit the shorelines of many bodies of water. 

 Frequently, the entire shoreline is infested (depending upon the water depth) , 

 and the plants can form borders along the water edge. Also, the marginal plants 

 can infest much of the area where there is shallow water. 



Marginal plants --arrowhead, waterwillow, creeping water primrose, and bulrushes -- 

 can be controlled by applications of granules 2,4-D at a rate of 1 pound of 20- 

 percent granuler 2,4-D per 440 square feet. Also, foliar applications of liquid 

 2,4-D using 1/4 cup (4 pounds per gallon ester of 2,4-D) diluted to 1 gallon with 

 water is very effective for the above species. 



However, these plants also help prevent erosion along the bank of the pond, thereby, 

 they are of some value. 



LISTING OF LICENSED ILLINOIS CUSTOM SPRAYER APPLICATORS 



If you would like a list of persons having an Illinois Custom Spray Applicator's 

 License, you may obtain one by writing to Mr. Juett Hogancamp, Weed and Herbicide 

 Adviser, State Department of Agriculture, Emerson Building, State Fairgrounds, 

 Springfield, Illinois 62705. County Extension advisers already have one copy of 

 this list. 



NOT FOR PUBLICATION: SPECIAL NOTE TO RADIO AND TELEVISION STATIONS 



If you inadvertently misplaced or lost the number to our automatic telephone- 

 answering service, it is as follows: (217) 333-2614. Have your recorder running 

 when you call. The answering device will play a 1:40 tape, summarizing the week's 

 insect activity and forecasting the next week's problems. If you are in the 

 northern-half of Illinois , call between 9 a.m. and 11 a.m. each Friday; if you 

 are in the southern-half of the state , call between 11:05 a.m. and 1 p.m. Contact 

 your county Extension adviser in agriculture for the local angle. 



For more information, or in case of difficulty, call Mr. Cliff Scherer in the Agri- 

 cultural Communications Office, 330 Mumford Hall, University of Illinois, Urbana: 



(217) 333-4783. 



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. 



Plant Diseases: M.P. Britton, Department of Plant Pathology. 



Weeds: Ellery Knake, Department of Agronomy; Robert Hiltibran, Illinois Natural 

 History Survey. 



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. 



