208 



Table 60. Pre- and post- treatment field-estimated and converted mite 

 population counts and treatment means for each treatment 

 from floor birds treated with two synthetic pyrethroids in 

 Chipley, Fl . , for northern fowl mite control. 





Pretreatment Counts 



Post-treatment Counts 



Observation 



Field 

 Estimates 



Converted 



Field 

 Estimates 



Converted 







Treatment 1 



(BW 21Z) 





1 



999 



3121.87 











2 



500 



4065.00 











3 



100 



813.00 











4 



100 



813.00 











5 



25 



203.25 











6 



50 



406.50 











7 



100 



813.00 











8 



75 



609.75 











9 



100 



813.00 











10 



100 



813.00 











11 



100 



313.00 











12 



250 



2032.50 











13 



100 



813.00 











14 



110 



894.30 











15 



50 



406.50 











16 



130 



1056.90 











17 



100 



313.00 











18 



300 



2439.00 











19 



65 



528.45 











20 



55 



447.15 











21 



175 



1422.75 











22 



100 



813.00 











23 



110 



894.30 











24 



150 



1219.50 











25 



100 



813.00 











Mite Mean 



161.76 



1315.11 











