COST OF SPRAYING 43 



poison, in order that they may accommodate the 

 orcharclist by committing suicide. The one spot which 

 is not sprayed may be the very place where a bud- 

 worm is getting his dinner. On the other hand there 

 are many fruit-growers who spray with the greatest 

 thoroughness and accuracy, and they are the ones who 

 in the long run will get the fruit." 



COST OF SPRAYING 



The cost of spraying depends, of course, upon 

 various conditions, such as the crop sprayed, number 

 of applications, apparatus, and mixture used, etc. It 

 is usually estimated that full-grown orchard trees can 

 be sprayed at a cost of 15 to 25 cents per tree per 

 season, while nursery trees can be treated with 

 Bordeaux mixture the first two seasons for about 25 

 cents per thousand trees per season. 



Professor L. R. Jones, of the Vermont Station, 

 has summarized several seasons' experience of the 

 expense of spraying potatoes as follows : "It is im- 

 possible to give a general estimate that will suit all 

 cases, as there are so many varying conditions. The 

 amount of the mixture necessary to cover an acre will 

 vary all the way from 50 to 300 gallons, according to 

 the amount of foliage and the methods of application. 

 Where we have covered an acre with 50 gallons in 

 the middle of July, we have used 100 or 150 gallons 

 per acre on the same piece in August. Again, in the 

 latter part of August, we have sprayed a poor piece 

 of half-blighted plants with 100 gallons per acre, and 

 on the same day, on another piece where the ground 

 was covered with a mass of luxuriant leaves, we have 

 found it necessary to use fully 250 gallons per acre. 

 Again, . . . the number of applications varies with 



