160 



ANNUAL, REPORT OF THE 



Off, Doc. 



It is of course, our hope that the old couplet, 



"Bis bugs have little bugs upon their backs to bite 'em 

 And little bugs have lesser bugs and so on ad infinitum," 



may in time help us with a parasite as has happened with the potato bugs. 

 This will almost certainly occur eventually, but in the meantime, it is our duty 

 to keep our orchards thrifty, or when the help does come we will derive no bene- 

 fit therefrom. 



COST OF SCALE SPRAYING. 



PREPARING MATERIAL. 



An average of reports as to cost shows that the expense of making 100 gal- 

 lons of spray material, using a boiled 22-17-50 formulae for the Lime-Sulphur 

 wash and a 1 to 20 proportion for the miscible oil washes, is as follows: 



Lime-sulphur Wash, 

 Oils. 



Labor. 



$.45 

 .15 



Materials. 



$.93 

 2.62 



Totals. 



»$1.38 



2.77 



•No charge for fuel or cooker included. 



APPLYING. 



As there seems to be some variation in expense depending upon character of 

 apparatus used, we have worked out the following averages from the reports: 



Cost of applying 100 gals 



Cost of applying 100 gals, (average of above), 



Power 

 Outfit. 



$.53 

 $.95 



AVERAGE TOTAL COST OF MAKING AND APPLYING 100 GALLONS. 



Power outfit and L-S Wash, 



Hand pump 



Average cost L-S Wash, ... 

 Power outfit and Oil Wash 

 Hand pump and Oil Wash, 

 Average cost of Oil Wash, 



Average both materials, . . 



Liabor. 



2.05 

 1.40 



.75 

 1.53 

 1.14 



1.27 



TREES COVERED. 



An average of the returns seems to indicate that 100 gallons should cover about 

 180 trees five years old, 70 ten years old and 25 fifteen years old. Combining the 

 above averages of cost and number of trees covered per 100 gallons we have 

 an approximate cost of $.017 each for young trees, $.044 each for five years and 

 $1.25 for those fifteen years old. These values must be regarded as approximate 

 only for the reason that sf'me men by lack of care use much more material than 

 is needed, while others do not use as much as they should in order to do a good 

 job. One report which we know to have been carefully worked out, shows a cost 

 of $0.16 for five-year old apple, $.10 for those ten years old and $.25 for those 

 forty years old. 



