per pound, and 946 milliliters per quart. Measuring spoons can be used for approxima- 

 tion, if scales or pippetes are not available. One level teaspoon holds about 5 milli- 

 liters or approximately 2 to 3 grams of wettable powder (WP) , although wettable powders 

 (WP's) do vary in density. 



1 quart/25 gallon = 4.7 ml. /pint = 1 tsp./pint 



1 lb. (WP)/25 gallon =2.2 gram/pint = 1 tsp./pint 



To list the mix for adding 1 quart of EC and 1 pound of WP per 25 gallons, you would 

 add 1 teaspoon of EC and 1 teaspoon of WP to 1 pint of the liquid fertilizer. 



Procedure : 



1. Place 1 pint of carrier into a quart jar. 



2. Add the proper amount of each pesticide. 



3. Close the jar and mix, by shaking or inverting it. 



4. Observe the mixture at once, and again after 30 minutes, to determine compatability 

 and suspension stability. 



If the materials remain suspended or are easily resuspended, then uniform application 

 will be possible with good agitation. If they separate, precipitate, or form "gunk," 

 you need to rerun the test with the addition of a compatability agent, such as Compax 

 (1/2 teaspoon per pint), to determine if this will solve the problem. 



Mixing procedures can make the difference between success and failure. Partially fill 

 the tank before adding pesticides. Wettable powders should be pres lurried, emulsifiable 

 concentrates preemulsified, with water (separately) before being added to liquid fer- 

 tilizer. Add wettable powder to the tank before the emulsifiable concentrates. Always 

 have the agitation system operating when the pesticides are added to the tank. 



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 Tim Cooley , College 

 of Agriculture , University of Illinois at Urbana-Champaign , and the Illinois Natural 

 History Survey. 



WEEDS: Ellery Knake and M.C. McG lamer y , Department of Agronomy, and Herb Hopen , Depart- 

 ment of Horticulture . 



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. 



