184 



Table 49- Test concentrations and corresponding responses from the 

 JFU 5819 laboratory bioassay. 



Test Concentrat ions (ppm) 



Replication 19 15 10 5 1 Control 



1 6/8 a 4/9 3/9 2/10 1/3 2/8 



2 4/7 4/3 3/9 3/11 1/8 1/9 



3 5/8 5/9 3/8 2/11 2/8 1/9 



4 5/8 3/8 4/9 1/11 1/8 2/9 



£ 20/31 16/3^ 13/36 8/43 5/32 6/35 



x 5-00 4.00 3-25 2.00 1.25 1.50 



% Mortality 64.52 47.06 37-14 18.60 15. 63 17.14 



Corrected % Mortal i ty b 57-18 36.11 24.14 1.72 



Represents the number of flies killed out of the total number 



of f 1 ies tested. 



Corrected using Abbott's formula: 

 ; treatment mortality - '■ '-, check mortality x . nn 

 100 - % check mortality 



