16 



EXPERIMENT NO. 3. 



Peach trees were treated to kill the winter spores of the "fruit rot" 

 April 17th with the concentrated solutions of sulphate of copper and 

 iron and the Bordeaux mixture ; May 8th and June 6th, sprayed 

 with the Bordeaux mixture and Paris green, one pound to 200 gallons 

 for the "fruit rot" and plum curculio, which is often as injurious to 

 the peach as to the plnm. July 7th, sprayed with the ammoniacal 

 carbonate of copper, one pound to twenty- five gallons of water. 



Results. The foliage was somewhat injured by the spraying of 

 June 6th, and very seriously by that of July 7th, but new leaves 

 developed and the fiuit matured in fine condition. Less rot appeared 

 on the fruit sprayed than on that unsprayed, but no results were 

 noticed from the Paris green in destroying the curculio, although 

 there was less injured fruit than last season. 



EXPERIMENT NO. 4. 



Plum trees were sprayed with the strong solutions of copper and 

 iron, and the Bordeaux mixture, April 16th, for "leaf blight," "fruit 

 rot" and "black wavt". iMay 12th, May 26th, June 11th, and July 

 20lh, sprayed with the Bordeaux mixture, adding Paris green, one 

 pound to 200 gallons of water, to destroy the plum curculio. 



August 1 1th, sprayed with the ammoniacal carbonate of copper, 

 one pound to twenty-five gallons of water. 



Results. The trees sprayed retained their foliage much later than 

 those unsprayed, as is shown by the illustration, plates VI, VII, and 

 there was less rotting of the fruit. Only a few plum warts developed 

 on the sprayed trees and those that appeared seemed to have become 

 established the previous season. 



To determine whether concentrated solutions of Paris green in the 

 Bordeaux mixture could be used without injury to the foliage, it was 

 applied in three proportions, 1 lb. to 50 gal., 1 lb. to 100 gal. and 

 1 lb. to 200 gal. After a close and careful examination no injury 

 could be discovered from any of the solutions. 



EXPERIMENT NO. 5. 



Grape vines and all parts of the trellis were thoroughly sprayed for 

 the mildew and black rot, April 23d, with the three concentrated 

 solutions, sulphate of copper, sulphate of iron, and the Bordeaux 



