131 



1.3 m 



Check 



Blank 



538 mg/m : 



Blank 



1076 mg/m" 



Block No, 



2 

 3 



5 



Figure 27. Experimental design for testing the effects of ZR- 5 1 5 

 sand granules on larval populations of Musca domestica 

 in the manure collection area of a poultry house. 



