200 PATHOLOGY [BoT. Absts., Vol. VIII, 



eluded that there is no material reduction in the sugar content of juice from affected plants. 

 When stalks are so severely affected that they are cracked open, fermentation sets in and 

 sucrose is lost. — The juice of diseased cane shows a higher acidity; this is not suflficient to 

 cause inversion except in very acute stages of the disease. — D. Reddick. 



1379. Melchers, Leo E., and John N. Parker. Three winter wheat varieties resistant 

 to leaf rust in Kansas. Phytopath. 10: 164-171. 2 fig. 1920. — Experiments carried on for 6 

 years show 3 hard winter wheats, "P762 Kanred," "P1066," and "P1068" to be markedly 

 resistant to leaf rust, Puccinia triticina. These varieties grown in commercial fields over 

 Kansas retain their resistant qualities. — H. H. McKinney. 



1380. Townsend, C. O. An immune variety of sugar cane. Sugar 21: 305. 1919. — The 

 Kavangire cane and its immunity to the mosaic disease are described. — C. W . Edgerton. 



1381. Townsend, C. O. Una variedad immune de la caSa de azucar. [An immune variety 

 of sugar cane.] Sugar 21: 392. 1919. — A translation in Spanish of an earlier article [see the 

 preceding entry], — C. W. Edgerton. 



1382. TuBEUF, C. VON. Die Wirtspflanzen von Peridermium strobi. [Host plants of 

 Peridermium strobi.] Naturw. Zeitschr. Forst- u. Landw. 18: 214-215. 1920.— A list of the 

 hosts on which Peridermium strobi has been discovered is given: Pinus Strobus, P. Lamberti- 

 ana, P. monticola, P.flexilis, P. aristata, P. cembra sibirica, P. cembra alpina, and P. pence. 

 No case has been observed of an attack on Pinus excelsa. — J, Roeser. 



DESCRIPTIVE PLANT PATHOLOGY 



1383. B[arber], C. H. The mosaic or mottling disease of sugar cane. Internat. Sugar 

 Jour. 23: 12-19. 1 pi. 1921. — A summary of the work on sugar cane mosaic by J. R. John- 

 ston, R. M. Grey, C. W. Edgerton, F. S. Earle, G. L. Fawcett, J. A. Stevenson, and 

 E. W. Brandes. — E. Koch Tisdale. 



1384. Carpenter, C. W. Hawaii Agricultural Station reports on cane root rot fungus. 

 Sugar 22 : 20-22. 1920. — The deterioration of Lahaina cane, and its relation to a fungus of 

 the Pythium type, are discussed. — C. W, Edgerton. 



1385. Colon, E. D. La enfermedad de las rayas amarillas. [The yellow stripe disease.] 

 Sugar 21 : 52. 1919. — A short discussion of the yellow stripe or mosaic disease of sugar cane. 

 — C. W. Edgerton. 



1386. Cutting, E. M. [Rev. of: Hilet, W. E. The fungal diseases of the common larch* 

 xi + 204p., 73 pi. and diagrams. . Clarendon Press: Oxford, 1919 (see Bot. Absts. 7, Entry 

 1188).] Sci. Prog. [London] 15: 146-147. 1920. 



1387. Earle, F. S. La enfermedad del mosaico en Puerto Rico. [The mosaic disease in 

 Porto Rico.] Sugar 21 : 551. 1919. — A brief discussion of the mosaic disease of sugar cane in 

 Porto Rico is presented. — C. TF. Edgerton. 



1388. Edgerton, C. W., and C. C. Moreland. Tomato wilt. Louisiana Agric. Exp. 

 Sta. Bull. 174. 54 p., 19 fig. 1920.— Results are presented of 10 years investigations on the 

 tomato wilt, including laboratory, greenhouse, and field work. The disease shows on all 

 parts of the host plant and during all stages of its development. It is, however, most fre- 

 quently observed about the time the fruits are developing. The fungus, Fusarium lycoper- 

 sici, enters the plants from the soil. The spores of the fungus will remain alive on tomato 

 seed from fall to spring. The disease develops best on light, fertile soil ; it is very rarely found 

 in the alluvial sections of the state. Some substances added to the soil retard the develop- 

 ment of the disease. Ten tons of lime to the acre delays the wilt for about 2 weeks or more. 

 The disease develops best when the temperature is comparatively high, the optimum tem- 



