9 



The results of the examination were as follows : On 78 sprayed 

 trees were found 39 knots. An average of one knot to eacli two 

 trees. On 10 unsprayed trees were found 52 knots. An average of 

 5.2 knots per tree. Thus the total number of knots found in the 

 station orchards in 1895 was 91. In 1891 there were found on one 

 Bradshaw tree 78 knots or nearly as many as were found in the 

 entire orchard, in 1895 and twice as many as were found on all the 

 sprayed trees in 1895. The tree above mentioned has been treated 

 as described above and sprayed, and at the present time is entirely 

 free from knots. Of the 78 sprayed trees 50 were found free from 

 knots. Of the 10 unsprayed trees one, a Wild Goose, was found 

 free from knots. 



Summary. 



1. By painting the plum knots with kerosene during the summer 

 and removing from the tree and burning early in the winter before 

 the winter spores are scattered, the disease can be held in check. 



2. By combining the above treatment with proper spraying, the 

 disease can be in large measure prevented and practically eradicated 

 from orchards that have suffered from a severe attack. 



Besults of Spraying for Season of 1895. 



The plums were spray6d April 5th with Bordeaux mixture. 



May 3, Bordeaux mixture and Paris green 1 lb. to 100 gals. 



May 20, " " " '' '' " " 



June 6, " " " " " " " 



Aug. 8, with Ammoniacal Carbonate of Copper. 



On sprayed trees the fruit rotted much less than on unsprayed 

 trees, but was not wholly free from rot. 



On sprayed trees the curculio did much less damage than on the 

 unsprayed ones. After all the fruit stung by the curculio was picked 

 off a good crop remained. 



On some unsprayed trees the curculio ruined the crop. 



On the Washington plum trees, spraying had the most beneficial 

 effect. 



On the Lombard plums the effect was good, at least twice as muck 

 fruit maturing on sprayed trees as upon those unsprayed. 



