132 MUCK CROPS 



4. It should have good nozzles, those 

 that will, under the above pressure, send 

 forth a constant misty spray. 



5. It should be of light draft, so that it 

 can be drawn over the land without any 

 great amount of injury to the crop nor too 

 great a burden on the horses. 



Some of the most desirable types of mach- 

 ines that will include the above are the 150 

 or 200 gallon tank, gasolene engine spray- 

 ers, especially those that have arrangements 

 for spraying from four to six rows at a time, 

 two nozzles being used to spray each row. 



Cost of Spraying. If the 4-6-50 bordeaux 

 formula is used, the following calculation 

 would be in order: 



4 pounds copper sulphate at 5^4 cents a pound 21c 



6 pounds lime sulphate at 1 cent a pound 6c 



Total cost 50 gallons bordeaux 27c 



The cost for 50 gallons of the other for- 

 mulas is very easily ascertained. The total 

 cost of the materials used an acre for the 

 season will vary with the number of times 

 the plants are sprayed and the amount of 

 material used. Generally speaking, $2 an 

 acre would be a low average, and $5.28 cents 

 would be a high average. However, these 



