THE MONTHLY BULLETIN. 



563 



SULPHURING FOR MILDEW. 



Some roses are especially susceptible to mildew attack. As in the 

 «ase of the grape, powdered sulphur if applied in season will usually 

 prevent this blighting mildew from injuring the shrubs. These mil- 

 dews are always more severe in times of fogs and a damp atmosphere. 

 The crimson rambler and Marie Henriette roses are especially liable 

 to attack. To work a sure cure, the sulphuring must be done early 

 l)efore the mildew attacks the plants. However, it will do good later 

 as the new foliage that starts after the diseased leaves fall will be saved 

 from affection. The spores, seeds of the fungus — if we may so speak — 

 are killed by the sulphur, while the fungus if started is immune. 



In advising, I have usually suggested that the first sulphuring should 

 be done at the same time that the winter cover crop is to be plowed 

 under in February. Thus, the house wife as she applies the sulphur 

 to her scarlet ram1)ler will remind the "Gude Man" of the house 

 that it is time to turn under his vetch, or vice versa. — A. J. Cook. 



PEAR-LEAF BLISTER-MITE ATTACKING FRUIT. 



The pear-leaf blister-mite, Eriophyes pyri Pgst., is quite abundant 

 in the central and northern parts of the State and its work upon the 

 leaves is familiar to all. It is not, however, generally known that this 

 mite also attacks the fruit. Considerable damage is l)eing done to the 

 .young pears this year. Mr. J. E. Hassler, county horticultural com- 



FiG. 333. — Work of the pear-leaf 

 blister-mite, Eriophyes pyri Pgst., on 

 fruit. (Original.) 



missioner of El Dorado County, sent in the first affected fruit with the 

 statement that much of the young fruit was affected. Later specimens 

 Avere sent in by Commissioner U. F. Norton of Nevada County. 



The work upon the fruit greatly resembles that upon the leaves. 

 There appear small chafed areas which enlarge and later appear as 

 distinct rings with reddish or dark border and lighter sunken center. 



