202 Studies in Bacteriosis 



Moreover, artificial inoculations of plants with BaciUii.s lath/ri made 

 in October, when the plants were well developed, have resulted in no 

 more sign of disease than such lesions in the pith as are shown in 

 this photograph. It is only when plants are growing rapidly that the 

 typical stripes are produced upon the stems. 



In view of the present work therefore it seems highly desirable that 

 a further investigation of the Grand Rapids Disease should be carried 

 out, 



SUMMARY. 



(1) A Stripe disease of tomatoes growing under glass is described. 



i'l) The causal organism is a small yellow bacillus believed to be 

 identical with Bacillus lathyri, Manns and Taubenhaus. 



(3) The effect of manurial treatment on the incidence of the disease 

 shows that excess of nitrogen increases susceptibility in the plant and 

 this can be largely counteracted by increase of potash. 



(4) Different varieties of tomatoes show varying degrees of suscep- 

 tibiUty to the disease. 



(5) It is tentatively suggested that the Grand Rapids Tomato 

 Disease, described by Smith, may be identical with this Stripe disease 

 and that the organism which has been described as the cause of the 

 Grand Rapids Disease may prove to be a saprophyte. 



REFERENCES. 



(1) Bailey, L. H. Winter Blight in "Some troubles of winter tomatoes." Cornell 



Univ. Agri. Sta. Bui. 4.3, p. 149, 1892. 



(2) HowiTT, J. E. and Stone, R. E. "A troublesome disease of winter tomatoes." 



Phytopathologij, vi, p. 163, 1916. 



(3) Manns, T. F. "Some New Bacterial Diseases of Legumes." Delaivare College 



Agr. Exp. Sla. Bui. 108, 1915. 

 (i) and Taubenhaus, J. J. "Streak: A Bacterial Disease of the Sweet Pea 



and Clovers." Gard. Chron. 53, p. 215, 1!)15. 

 (5) Paine, S. G. "Internal Rust Spot Disease of the Potato Tuber." Annals of 



Applied Biol, v, p. 77, 1918. 

 (()) and Stansfield, H. "A bacterial Leaf -spot Disease of Protea cynaroides, 



cxhibifinj^ a Host Reaction of possibly bacteriolytic nature." Annals of 



Applied Biol, vi, p. 27, 1919. 



(7) Selby, a. D. "A Blight of Forced Tomatoes." Ohio Agri. Exp. Sta. Bui. 73, 



p. 237, 1896. 



(8) Smith, E. F. "The Grand Rapids Tomato Disease Bacteria in Relation to Plant 



Diseases." Washington, D.C. vol. iti, p. 161, 1914. 



( 



