842 EXPERIMENT STATIOIT RECOED. 



The root parasites of the Bombay Deccan, H. Van Buuben (Poona Agr. Col. 

 Mag., 5 (1914), No. 3, pp. 193-196, pi. 1). — The author describes the attack of 

 Striga lutea on durra, pearl millet, maize, and other grasses in India. 



Propagation of rust of cereals, J. Beauverie (1. Cong. Internat. Pathol. 

 Vompar^e [Paris], 1912, vol. 2, Comp. Bend., pp. 960-965). — In this brief pre- 

 liminary note the author claims to have demonstrated the frequent presence of 

 uredospores, teleutospores, and mycelium of grain rusts in the pericarp of wild 

 and cultivated grains. It is thought that the young plants are often thus 

 contaminated as soon as they begin to develop in spring. 



Powdery scab, a new potato disease, E. S. Bkigham (Bui. Vt. Dept. Agr., No. 

 18 (1914), pp. 1-7, fig. 1). — ^A popular report is given of the powdery scab, due 

 to Spongospora suMerranea, in order that potato growers may be informed re- 

 garding the avoidance of its possible introduction. 



Wart disease of potatoes, J. Eriksson (Jour. Bd. Agr. [London], 21 (1914), 

 No. 2, pp. 135, 136). — The author reports the results of an experiment bearing 

 upon the possibility of eradicating the wart disease of the potato. 



Diseased tubers were planted in plats surrounded to a depth of 1 meter by 

 a zinc casing, the ground being treated some weeks later with a 1 per cent 

 solution of commercial formalin at the rate of 10 liters per square meter (about 

 1 qt. per square foot). All the plats so treated were entirely free from the dis- 

 ease, while the control plats showed about 66 per cent of the plants infected to 

 some extent. It is thought possible to eradicate potato wart disease from any 

 field by employing stronger solutions where necessary. 



Bacterial diseases of the roots of sugar beets, G. TszHEBiNSKii {Vi^stnik 

 Sakhar. Promysh., No. 36-39 (1911); ahs. in Zhur. Opytn. Agron. (Russ. Jour. 

 Expt. Landic), 13 (1912), No. Jf, pp. 621-625). — The author gives an account of 

 studies of a dry and a slimy rot of beet roots noted on plantations in the Gov- 

 ernment of Kiev. 



In connection with the former disease, which is described in three forms ac- 

 cording to the portion of the plant attacked, he found two bacteria. This form 

 of rot, which is widely distributed in southwestern Russia, differs from the dry 

 rot as known in Germany accompanied by heart rot, in that the latter appears 

 in the first year of the growth and not during the wintering of the roots or in 

 transplanting. The slimy rot shows the presence of both these bacterial forms 

 and also of a third, which is described, as are also the symptoms characteristic 

 of this form of rot. Both transfer and contact inoculations from roots affected 

 with slimy rot produce dry rot in healthy beets. The author is inclined to con- 

 sider dry rot of the roots as dry bacteriosis. 



Puccinia subnitens on the sugar beet, Venus W. Pool and M. B. McKay 

 (Phytopathology, 4 (1914), No. 3, pp. 204-206, pi. i).— Attention is called to the 

 occurrence of the recial form of P. suhnitens on sugar beets, the telial host of 

 which Is said to be Distichlis stricta. 



For the control of this disease, which is said to be of increasing economic 

 importance, the destruction of salt grass, which is quite common along the road- 

 sides and ditches, is recommended. 



[Lime treatments of soil for Plasmodiophora brassicae], D. A. Gilchrist 

 (County Northumb. Ed. Com. Bui. 21 (1914), PP- 84-88). — Giving in connection 

 with figures previously reported (E. S. R., 29, p. 752) the results obtained from 

 the use of various treatments in 1913 for finger-and-toe disease of swedes, the 

 author states that a decrease was noted in the beneficial infiuence of lime mud 

 after its employment for nine successive years on the same ground. 



Diseases and deformities of mushrooms, F. Gu:fiGUEN (1. Cong. Internat. 

 Pathol. Compar^G [Paris], 1912, vol. 2, Comp. Rend., pp. .056-960).— Giving 

 results of some observations made on cultivated mushrooms showing abnor- 



