92 N. H. AGR. EXPERIMENT t^TATlOX [Bulletin 143 



spray against a strong wind. Spraj- from the windward side 

 and wait till the wind shifts, or a calm day to spray the other 

 side. 



It is evident that it is difficult to spray either the old tree 

 soaring skywards for thirty feet, valuable only in that it fur- 

 nished a home to the friendly woodpecker, for it costs more to 

 pick the fruit from it than it is worth, or trees scattered over a 

 rough pasture, or following a stone wall along the roadside, 

 where a ditch or bank often makes it impossible to reach them 

 from the roadway. For successful spraying, as well as for 

 proper care in culture, etc., the orchard should be in rows and 

 the trees should be kept headed in, so that the tops can be readily 

 reached. The day of the sky-scraper tree is passed. 



COST. 



The chief cost in spraying is the labor and no definite figures 

 are therefore possible for trees scattered over a pasture, or along 

 roadways, etc., but where they are in orchards the following 

 figures give the actual cost in our work during the past few sea- 

 sons with a barrel pump, using only arsenate of lead, amounting 

 to a total of nine or ten cents per tree for spraying. That this 

 price is about the average is confirmed by the growers who have 

 reported upjn it — see page KHl. With a power spi'ayer. with 

 good water supply and trees in solid blocks, the cost can be 

 reduced by one-half. 



Material: 



Three pounds arsenate of lead per bbl., at 12c..$0.3G 



One barrel will cover 12 trees, or per tree. . . . $0.03 



Labor: 



Two men at $2 per day $4.00 



One horse at $2 per day 2.00 



$6.00 

 Will cover 100 mature trees in 10 hrs., or per 



tree .06 



Total $0.09 



Additional cost for Bordeaux mixtnho would be .023 



