New York Agricultural Experiment Station. 369 



-canes when they are six or eiglit inches higli. The first appearance 

 of the disease is shown by minute spots that form on the tender 

 shoots. These are at first grayish white in color, with a dark or 

 purple outline. The spots rapidly enlarge and become darker 

 colored. As the spots become more numerous and each one enlarges 

 rapidly, they often grow into each other and form large blotches or 

 scabs several inches long and extending nearly around the cane, 

 effectually girding it. Thus it often happens that the fruit withers 

 before it is ripe, because the disease has cut off the circulation, so 

 that not enough sap ascends to keep the plant alive. In some locali- 

 ties anthracnose is very destructive, many times killing out a planta- 

 tion in a few years. It is oftener the case, however, that tlie disease 

 is not so injurious, but remains in the plantation in an active state 

 without the owner suspecting it, though he complains that his plants 

 do not produce the crop that they once did. 



Remedies. — An experiment now being conducted by this Station 

 tends to the conchision that treatment with Bordeaux mixture will 

 be successful. The exact number of sprayings that will be neces- 

 sary to prevent the spread of the anthracnose has not yet been deter- 

 mined, but we feel warranted in making the following recommenda- 

 tions : Give the new canes three sprayings with Bordeaux mixture, 

 beginning when the largest of them are about six inches tall. Let 

 the otlier applications follow at intervals of about two weeks. As 

 anthracnose is a disease more particularly of the canes, and the 

 treatment is entirely preventive, the spray should be directed at the 

 young shoots. An endeavor should be made to keep them coated 

 with the mixture for the first few weeks of their growth. When 

 the disease is severe the old canes should be removed and burned as 

 soon as they have fruited. 



Blight. — Pear blight occasionally attacks raspberries and black- 

 berries. The following account is taken from Bulletin No. 6 of the 

 Ohio Experiment Station. 



" At the base of the canes, usually quite near the surface of the 

 ground, occur brownish black patches from one-half inch to several 

 inches long and extending completely around the cane. There are 

 also smaller patches at the bases of branches, on the petioles and 

 under the surface of the mid-veins of the leaves, which curl down- 

 wards. The parenchymatous portion of the leaf does not seem to 

 be attacked. These blackish patches differ from those caused by 

 anthracnose in that the epidermis does not crack, and though black- 

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