92 THE COXXECTICUT POMOLOGICAL SOCIETY. 



Experiments in Spraying for the Scale. 



Work ix the Hale Orchards. 

 By E. R. Bennett, Storrs Experiment Station. 



I know of no better way to treat this subject than to give 

 you a short account of the work done last spring in treating 

 1 1 ,000 peach and pKuu trees for San Jose scale at Mr. J. H. 

 Hale's. !Mr. Hale's object in this work was to kill the scale. 

 Our object was to note the effect of the use of the sulphur, 

 lime and salt mixture on the scale, the trees and the men, when 

 the application was made to the trees under different conditions 

 and with different strengths of solution. We also wished to 

 determine the cost of treatment when the work was done on a 

 commercial basis. 



The equipment for this work consisted of one 20-horse power 

 steam boiler with pipes leading into six barrels. Four of these 

 were used to boil the sulphur, lime and salt, the other two 

 for heating water. A near-by hydrant supplied water both for 

 filling the steam boiler and for making the solution. Two 

 Eclipse pumps mounted on barrels were used ; each pump 

 having two lines of hose and double Vermorel nozzle attach- 

 ments. Seneca nozzles were tried, but were not found as satis- 

 factory as the double Vermorel. They did not spread the spray 

 enough, consequently causing a loss of time. After a short 

 time it was found advisable to have a third pump and barrel 

 to avoid loss of time from pumps getting out of order. 



Three men and a horse were used with each pump, two men 

 to make the solution, and when the trees to be sprayed were 

 far away from the boiler a man with a horse and wagon were 

 used to haul the solution from the boiler to the pumps. — in all 

 making nine men and three horses. 



Details of making tlic uii.vtuvc — The mixture was made in all 

 possible ways. First, 30 pounds of lime was slaked with boil- 

 ing water, and reduced to a pasty mass ; then 30 pounds of 

 sulphur was added and thoroughly mixed, after which enough 

 water was added to thin the material and the steam turned on. 

 After boiling about one hour, 15 pounds of salt was added and 

 the whole mass boiled fifteen minutes more. Then the barrel 

 was filled with hot water and the material was applied to the 



