14 



Mode of application. 



The mixtures used in these experiments were applied with a " Field 

 Force Pump" with a "cyclone" nozzle. This pump is strongly 

 made and has stood the use of two summers very well. It was attached 

 to a cask holding about 50 gallons. This was fastened to a stone- 

 boat so as not to rock or roll, and when used was drawn about among 

 the trees by one horse. This seems a better arrangement than to 

 place the cask on a wagon, as it can be drawn in among closely 

 planted trees and vines. 



It required two men to work it, one to do the pumping and the 

 other to direct the spray. To reach all parts of the tree without much 

 loss of the liquid, the nozzle was attached to a pole about ten feet 

 long. 



When the Bordeaux mixture was used with this pump it was found 

 necessary to strain the liquid to take out the coarse particles of lime, 

 which clogged tiie nozzle and rapidly wore out the packings of the 

 pump. Applications were made as follows : 



April 24th. Sprayed branches of trees in Plots Nos. 1, 3 and 5 

 with carbonate of copper solution. Plots Nos. 2 and 4 containing the 

 same kind of trees were left as a check on the experiment. 



This it will be observed was before the leaves were unfolded, the 

 object being to destroy any spores at that time on the branches. 



May 17th. Sprayed with Paris green, 1 lb. to 500 gallons of water. 



As the Fusicladium (apple scab) was supposed not to develop 

 until after the fruit was set, only Paris green was used for the purpose 

 of destroying the codling moth. 



May 21st. The application of May 17th was repeated as a heavy 

 rain occurred on the previous day. May 20th. 



May 29th. As the foliage was found very seriously injured, a 

 precipilat'ebf carbonate of copper was obtained of Prof. Charles Wel- 

 lington from the college laboratory, which was thought to be a little 

 less acid. The solution made from this is designated A. 1., while 

 that made from the carbonate of copper obtained in the market is 

 A. 2. Plots 1 and 3 were sprayed with A. 1., and Plot 5 with A. 2. 

 Both were used with the ammonia and Paris green as per formula. 



June 7th. Repeated spraying as on May 21st on the same plots. 



June 17th. Sprayed apple trees in Plot No 5 with mixture A. 1. 

 ,and pear trees in same plot with A. 2. 



July 1st, Plots No. 1 and No. 3, apple sprayed with A. 2. Plots 

 Nos. 1 and 2, pear sprayed with mixture A. 2. 



