-4- 



walking bait station for fleas. Dust them at least once a month during the warm weather 

 (May to October) with either 4-percent malathion or 5-percent carbaryl (Sevin) . Treat- 

 ments should also be made once or twice during the colder months (November to April) for 

 added protection. 



WEEDS 

 POSTEMERGENCE TREATMENTS ON CORN 



Four points seem timely: 



1. Atrazine and oil applications need rain soon after application to be highly effective. 



2. We've had several calls regarding the control of nutgrass in corn. Atrazine and oil 

 does the best job. If you're willing to risk corn injury—where you have a serious 

 nutgrass problem, you can add 2,4-D to the atrazine and oil. Keep in mind that the 

 practice is risky, and if you try it, you're gambling and may suffer some corn injury . 



3. We have a report from Minnesota researchers that adding one-half pound of Dowpon to 

 atrazine and oil activates the atrazine and improves grass control. Dowpon is cleared 

 for such use, but our tests have not shown much improvement in control by adding the 

 Dowpon. 



4. Where grasses are coming, consider using the rotary hoe. It's still a good way to 

 kill existing weeds, and the light incorporation sometimes improves herbicide activity 



WATCH YOUR WELL 



We've had several calls from farmers who have filled their spray tanks, and then had the 

 tank's contents siphoned back into the well- -herbicide and all. 



Remove the hose when you finish filling the tank. Better yet, be certain you have a valve 

 that will prevent siphoning. Another way to avoid the accident is to fasten the hose to 

 the top of the tank, so that it doesn't extend into the spray tank. 



SPECIAL ANNOUNCEMENTS 



Pesticide Dealers and Applicators Field Days/1: 30 p.m. each day: 



June 3, Office of the Perry County Extension Adviser, Charles Howell, Pinckneyville 



June 4, Office of the White County Extension Adviser, Ralph Romig, Carmi 



June 9, Office of the Jasper County Extension Adviser, Larry Casey, Navton 



June 10, Office of the St. Clair County Extension Adviser, Mike Hardimon, Belleville 



June 10, Office of the Marion County Extension Adviser, Les Rogers, Salem 



June 11, Office of the Macoupin County Extension Adviser, William McAllister, Carlinville 



June 11, Office of the Moultrie County Extension Adviser, Roger Wenberg, Sullivan 



NOT FOR PUBLICATION 



SPECIAL NOTE TO RADIO AND TELEVISION STATIONS 



You can have the insect situation report on your station each Friday through Monday noon. 

 Telephone (217) 335-2614 each Friday. An automatic answering device will play a recording 

 with U. of I. entomologists summarizing the week's insect activity and forecasting next 

 week's problems. There is a southern- and northern- Illinois report, each 2 minutes long. 



