— 4— 



which we learned in the last lesson, called anthracnose 

 because of its black color. Copper sulphate, one pound, 

 dissolved in fifteen gallons of water and sprayed on 

 the canes before the leaves come out would probably be 

 effective, but even this will not always check the disease, 

 and then the only thing left to be done is to root up the 

 bushes and plant varieties not so easily affected by this 

 disease on some other part of the fruit plantation. For 

 the anthracnose of grape vines a sulphate of iron solution 

 is used. It can be put on with a white-wash or other 

 brush. 



For the black knot of plums, there is no satisfactory 

 remedy. The best way is to cut out and burn the dis- 

 eased branches. In late winter or early spring heavy 

 applications of bluestone (copper sulphate) solution may 

 be used, followed later in the season by Bordeaux mix- 

 ture. For the leaf blight apply Bordeaux mixture just 

 after the blossoms fall and once again in about two weeks. 



Brown rot of plums and cherries is a difficult thing 

 to fight as there is little use to spray after the disease has 

 made its appearance. When the disease is known to 

 exist, the trees should be sprayed with the copper sul- 

 phate solution before the buds open. After the blossoms 

 fall the Bordeaux mixture should be applied every two 

 weeks until the fruit is nearly mature. 



For the pear blight, which may also attack apples 

 and quinces, there is no remedy but to cut out and burn 

 the diseased limbs. This may do something to check the 

 disease. Some people also recommend spraying with 

 Bordeaux mixture, ^ 



For apple scab fungus, make three applications of 

 Bordeaux mixture at intervals of a week or ten days, the 

 first application to be made just before the blossoms open. 



