352 Keport of the Horticulturist of the 



and young twigs, but it is on the fruit that it commonly does the 

 most damage. It attacks the fruit at any stage of its development. 

 but spreads most rapidly when the cherries are nearly ready to pick. 

 With warm, moist weather at this time, the disease spreads very 

 rapidly, often nearly destroying a crop in a few days. Many of the 

 cherries rot and fall to the ground while others dry, and hang to 

 the brandies over winter as stated above. The appearance of this 

 disease on tha plum is shown in Plate XII, Fig. 1. 



Remedy. — As in the case of the leaf blight described below we 

 are only prepared to o£Eer suggestions as to the orchard treatment 

 against the fruit rot, as follows : 



1. Just before the blossoms open apply Bordeaux mixture 

 1 to 11 formida. 



2. Just after the blossoms fall apply Bordeaux mixture as before 

 with the addition of one ounce of Paris green for eighteen gallons 

 of the mixture. The Paris green is used against the curcalio which 

 causes wormy cherries. 



3. Make a third application from ten to fourteen days after the 

 second, using Bordeaux mixture and Paris green as before. 



If later applications are found necessary, use the ammoniacal solu- 

 tion of copper carbonate, whicli contains less copper per gallon than 

 the Bordeaux mixture and leaves less stain. Directions for making 

 this solution and also the Bordeaux mixture are given in article 4 

 on Fungicides and Insecticides. 



Leaf Blighi'. — See Plate XII, Fig. 2. This is a fungous disease 

 which attacks the leaves of other stone fruits besides the cherry. 

 On the cherry it frequently does considerable damage, in that it 

 seriously injures the foliage or even causes it to drop from the tree. 

 Some varieties, English Morello for example, appear to be more 

 subject to this trouble than others. Treatment of this disease on 

 nursery stock has been quite thoroughly investigated at this Station, 

 but the treatment of orchards has not yet been as thoroughly investi- 

 gated as is desirable. 



Remedy. — While it is known that the disease may be controlled 

 by spraying with Bordeaux mixture, 1 to 11 formula, the best time 

 for treatment and number of treatments can as yet be only sug- 

 gested. Let the first treatment be made as soon as the blossoms 

 fall ; the second about two weeks later, and the third just after the 

 fruit is pick' d. Should it be found necessary to spray when the 

 fruit is nearly full grown, or ripening, use the ammoniacal solution 



