164 



Bulletin 272. 



observed, however, no injurious effects have as yet followed their applica- 

 tion. Of the four remedies used in this experiment, two were applied 

 as washes or paints to the body or limbs of the tree while the other two 

 were poured about the roots. 



Controlling the Blight in the orchard. We are prepared to say and 

 ready to demonstrate that this disease can be controlled in the orchards 

 of this State. The following plan of operations properly performed 



has been demonstrated to be effective 

 both in our hands and in the hands of 

 the grower. 



General plan of operations for the 

 season : 



(i) Destroy all sources of infection, 

 i. e., clean out all cankers (Fig. 20) in 

 the apples, pears and quinces, cutting 

 well into the healthy tissue and remov- 

 ing the diseased bark. Disinfect the 

 cut with corrosive sublimate solution, 

 I part to one thousand of water (easily 

 made up by adding one of the tablets, 

 Fig. 2, purchased at any drug store to 

 a pint of water). This solution may be 

 carried in a bottle or wooden pail and 

 applied to the wound with a sponge. 

 Fig. 2 shows outfits that have proved 

 very effective in actual practice. This 

 disinfection may seem to the grower at 

 first to be unprofitable and unnecessary. 

 However, he will soon appreciate its 

 importance if it is omitted. Clean up 

 old pear, apple or quince trees in the 

 neighborhood that may harbor the disease organisms. If necessary, 

 destroy them. All hawthorns along the fence rows or in nearby pas- 

 tures should be destroyed also. 



(2) Make a regular inspection of every tree in the orchard at least 

 once a week throughout the growing season, beginning as soon as the 

 blossoms begin to fall. It may sometimes be necessary to inspect every 

 day. 



(a) Break out all blossom-spurs that show the disease and remove 

 them from the orchard. They should be burned. It will not be necessary 

 to disinfect the wounds made by breaking these out. The removal of 



Fig. 20. — Canker extendingdown- 

 ward from cankered stub of 

 previous season. Cleaned out, 

 ready for disinfection and 

 painting. 



