DISEASES OF PLANTS. 157 



[Apple diseases in Kentucky], H. Garman {Kentucky Sta. Bui. 133, pp. 

 62-69, pis. L't ) . — Notes are given on the occurrence and characteristics of apple 

 twig blight, bitter rot, blotch, brown rot, scab, leaf spot, leaf rust, crown gall, 

 and hairy root, with suggestions for their control where definite means are 

 known. 



A disease of olives due to Cylindrosporium olivae n. sp., L. Petri {Ann. 

 Miinih. .', {1001). \(). 'i, PI). .Ii0-3.ir,, figs. J; ahs. in But. Ccnthl., 107 {1908), No. 

 10, p. 2Jf8). — According to the author, for the past 2 years there has been preva- 

 lent in Tuscany a disease of the olive fruit which resembled in some ways a 

 disease in Portugal caused by Glceosporium oUvarum and in other ways a dis- 

 ease in Dalmatia due to the fungus Macrophoma dalmatica. A study of the 

 fungus, however, showed that it was distinct from either of these and apparently 

 an undescribed species, to which the author has given the name CijUndrospor- 

 iuin olirw n. sp. A technical description is given of the fungus and its effect 

 upon the host. 



Yellows and some other important diseases of the peach, J. L. Phillips {Va. 

 Crop Pest Com. Circ. J/, n. scr., pp. 12, figs. 9). — The author gives an account of 

 The distribution of peach yellows and some other peach diseases in Virginia, 

 describing their symptoms and methods for control. For peach yellows, peach 

 j-osette, and little peach the means for control consist of digging up and de- 

 strt)ying the affected trees. In addition an account is given of peach leaf curl, 

 due to Exoaseas deformans, for the prevention of which thorough spraying with 

 Koi'deaux mixture is advised. 



Cacao pests of Trinidad, O. W. Barrett {Proc. Agr. Soe. Trinidad and Tohago, 

 7 {1907), pt. 10, pp. 2Sl-30-'i). — This is a report to the agricultural society of 

 the author's observations regarding the fungus and insect pests of cacao, with 

 some notes upon miscellaneous crops. 



• The principal destruction of cacao appears to be due to the fungus Lasio- 

 diplodia, although a species of Fusarium, Phijtophthora omnivora, and other 

 fungi were noted as rather common upon the fruits. A number of insect pests 

 are reported, the most destructive of which is the black and white beetle 

 {Stcirastomn depressum), the larval stage of which burrows in the trunks and 

 larger branches. 



For i)reventing the fungus diseases, the author recommends the pruning out 

 of all diseased material, which, should be burned or deeply buried, and treat- 

 ing the areas cut with some antiseptic. In addition he recommends better 

 attention to cultivation, shade, wind-breaks, pruning, etc. 



Cranberry diseases in Wisconsin, C. L. Shear ([Proc] Wis. Cranberry 

 Gron-ers' As!<ne., 21 {190S), pp. 17-21). — According to the author, the scald, 

 rot, and anthracnose, the 3 most injurious fungus diseases of the cranberry in 

 the East, while present in Wisconsin, are not causing very serious loss. Those 

 diseases which are known to be most destructive in the Wisconsin cranberry 

 meadows are Sclerotinia disease, blossom blight or blast, and a disease that is 

 called by some growers false blossom. 



The Sclerotinia disease is characterized by the attack of the fungus on the 

 young shoots just as the plants are beginning to blossom. The tips wither and 

 the fungus produces a soft, white, mold-like growth on the stem and leaves. 

 It later attacks the fruit until it is nearly mature without any external evi- 

 dence of the i)resence of the fungus. At picking time the diseased berries show 

 a grayish, more or less wrinkled condition of the skin, and the whole berry 

 becomes gr:iy and shriveled. So far as known, it is in these affected berries 

 that the disease is carried over the winter, and all such fruit should be burned 

 or deeply buried. 



