250 EXPEKIMENT STATION RECORD. 



flbro-vascular hiiiifUes seem to constitute the most noticeable symptoms of the 

 true leaf roll disease. It was found that plants affected with this disease, 

 under favorable conditions, could put out a new root system and produce a 

 late but fair crop of tubers. 



A new smut on sorg-hum, F. Bubak {Ztschr. Landw. Vcrsnchsw. Osterr.. 

 13 (1910), No. 1, pp. 53-56, figs. 2). — The author figures and describes a new 

 species of smut (Ustilago hulgarica n. sp.) on Borglium vulgare, which infests 

 the heads of the common sorghum, filling the ovaries with a greenish-brown 

 mass of spores, covered at first with a gray epidermis which later bursts and 

 exposes the spores. 



The finger-and-toe disease and its control, J. P. Wagner (Mitt. Dent. 

 Landw. Gcscll., 2h (1909), No. Jfl, pp. 610, 611).— A popular description of this 

 common disease of cabbage, mustard, and related plants, together with recom- 

 mendations for its control are given. 



The bean anthracnose, C W. Edgerton (Louisiana Stas. Bui. 119, pp. 

 3-55,. pis. 1.1,; ahs. in Science, n. set:, 31 (1910), No. 802, p. 753).— The results 

 of two years' study on bean anthracnose (CoUetottHchutn lindemiithianuni) 

 under Louisiana conditions are given, including descriptions of the period of 

 incubation, methods by which the organism survives the winter, and relation 

 of the fungus to temperature, soil organisms, etc. 



Under the best conditions of growth the period of incubation was found to 

 be 4^ to 6 days. 



The fungus survives the winter by means of mycelium in the seed and by 

 spores. It is xniable to live during the summer months in Louisiana on ac- 

 count of the high temperature. A mean temperature of 80° F. with the 

 minimum above 70° seems to destroy it. 



Various soil organisms, especially a species of Fusarium, were found to de- 

 stroy much of the anthracnose by causing the rotting of the seed and the 

 crowding out of the anthracnose organism itself. 



As a result of inoculation experiments with spores of the bean anthracnose, 

 slight infection was secured on pole beans and Lima beans, but none on peas, 

 young cucumber plants or fruits, alfalfa, or cotton. 



A bibliography is appended. 



A new species of Endomyces, C. E. Lewis (Abs. in Scienee, n. ser., 31 

 (1910), No. 799, p. 638). — The author briefly describes a new species of En- 

 domyces found associated with an apple decay studied by him at the Maine 

 Experiment Station. 



Banana disease in Costa Rica (Jour. Jamaica Agr. Soc, IJf (1910), No. 3, 

 pp. 101, 102). — Attention is called to the fact that the so-called banana disease 

 (E. S. K., 22, p. 748) is due to grubs which attack the suckers at the bulb and 

 eat their way through the heart to the top, while the little mole-like animals are 

 responsible for only about 8 per cent of the losses. 



It is further claimed that the largest proportion of deaths of banana plants 

 is due to lack of drainage and to the soil being too long under bananas and 

 heavily shaded, rather than to any specific organism. 



Sooty mold of the olive, D. Vidal (Prog. Agr. et Vit. (Ed. VEst-Centre), 30 

 (1909), No. 24, pp. 730, 731). — ^A brief description is given of the sooty mold of 

 olive trees, which is caused by a fungus following certain insects. The author 

 recommends for its control spraying the trees witU a 2 per cent Bordeaux mix- 

 ture to which 1 liter of turpentine is added to every 100 liters of Bordeaux mix- 

 ture. This should be sprayed upon the trees twice during the season, the first 

 spraying when the eggs of the insect are deposited in the greatest number, and 

 the second application about the first of September when the conditions of 

 humidity and temperature favor the develoi)ment of the fungus. 



