1016] DISEASES OF PLANTS. 245 



Contribution to tlie study of the XJredineEe of Colombia, E. Mayor (In 

 Voyage d'Eavploration ^clenUfiquc en Colombie. Nevahdtel: Mem. 8oc. Neu- 

 ■chdtel. Sci. Nat., 1914, pp. 442-599, figs. 105).— The author lists as having been 

 found in Colombia 158 species belonging to the Uredinere which are included in 

 13 genera. Of the 83 species described as new, one is considered to represent a 

 new genus, whicli lias received the name Chrysocelis lupini. 



Diseases of grains and forage crops, M. T. Cook and J. P. Helyas {Neto 

 Jersey Stas. Circ. 51 (1915), pp. 3-8). — Descriptions are given of the principal 

 diseases of oats, wheat, corn, barley, alfalfa, and clover, with suggestions for 

 their control. 



Control of Fusarium, I. Wkidnek (Illus. Landw. Ztg., S5 {1915), No. 53, pp. 

 351, 352, figs. 4)- — Describing experiments testing some fungicides for control 

 of Fusarium on cereals, the author states that the preparations Fusariol and 

 Sublimoform, as furnished by the Munich Agricultural and Botanic Institute, 

 are found to be remarkably simple, effective, and inexpensive means for control 

 of this fungus on grain intended for seed. 



Experiments in control of club root of crucifers, A. Naumann (Flora, K. 

 Sachs. Oesell. Bot. u. Gartenbuit Dresden, Sit:;ber. u. Ahluindl., n. ser., 17 

 (1912-13), pp. 62-7S, pi. 1, figs. 3). — An account is given of tests from which 

 good results as regards control of Plasmodioplwra brassiccB were obtained h|^ 

 the employment of a patented preparation. The favorable effects are attributed 

 to the large proportion of lime and the loosening and aeration of the soil due 

 to the addition of mold, without which the good effects of the lime appeared to 

 have been considerably lessened. 



Combined fungus attacks on some root crops, J. Eriksson (Ztschr. Pflanzen- 

 kranlc, 25 (1915), No. 2, pp. 65-71, figs. 5). — The author gives an account of the 

 simultaneous occurrence on kohl-rabi of Fusarium brassicce and Pseudomonas 

 campestris, also on beets of F. b-etce and Phorna betw. 



Crown gall of alfalfa, J. Ritzema Bos (Tijdschr. Plant enziekten, 20 (1914), 

 No. 4, pp. 107-114, fig. 1). — This is a discussion of the earlier appearances of 

 Urophlyctis alfalfw in different countries, the systematic relations and biology 

 of the fungus, and measures for protection against it, including the destruction 

 of affected plants and soil drainage. 



Common diseases of beans, M. T. Cook (Netv Jersey Stas. Circ. 50 (1915), 

 pp. 2-4). — Descriptions are given of the more common diseases known to attack 

 the bean together with suggestions for their control. 



Yellowing of beets by disease, J. Vasters (Landio. Ztschr. Rheinprov., 16 

 (1915), No. 42, pp. 641, 642). — It is stated that over large areas of the Rhine 

 Province both ordinary and sugar beets showed this year premature yellowing 

 of the leaves which was particularly noticeable in certain sections named. 

 Besides animal parasites which had visibly injured the plants in some instances, 

 examination showed the presence of mycelium or spores of Uromyces betw, 

 Sporidesmium (Clasterosporium) putrefaciens, Cercospora betieola, and spores 

 of two fungi, possibly Phyllosticta beta; and P. tabifica. The plants suffered 

 more or less premature loss of foliage with corresponding decrease of product. 

 The possible bearing of rotation, manuring, and more directly protective 

 measures Is discussed. 



A bacterial disease of cassava, G. Bondae (Bol. Agr. [Sao Paulo'\, 16. ser.. 

 No. 6 (1915), pp. 513-524, figs. 4).— A description is given of a serious stem 

 disease of Manihot palmata, ascribed to Bacillus manihotis, which causes a 

 form of subcortical giimmosis, wilting, and, in case of young plants, death in the 

 majority of cases. The disease, it is thought, may be transmitted by insects, 

 also by tools. Of the three varieties of M. palmata discussed, one shows con- 

 siderable resistance while another is very susceptible. 



