DISEASES OF PLANTS. 145 



3). — A statistical account is giveu of the quautity and value of pulp wood 

 produced in Canada according to Provinces, species used, and method of manu- 

 facture, of the pulp wood exported from the Dominion, and of the imports and 

 exports of wood pulp during the calendar year 1913. The report also contains 

 a map showing the location of the pulp mills of the Dominion. 



DISEASES OF PLANTS. 



[Report on plant protection in Baden, 1913], C. von "Wahl and K. MOller 

 (licr. IlauptstcUc P/htnznischutz Baden, 1912, pp. 70, figs. 5). — This report is 

 similar in plan and scojie to that of the previous year (E. S. R., 31, p. 539). 



Several newly proiwsed treatments tested for Perouospora on grapevines 

 proved inferior to Bordeaux mixture for this purpose. Iron sulphate in 20 per 

 cent solution brushed into scab areas on vine stocks was only partially suc- 

 cessful in eradicating the scab, which afterwards reappeared. 



Fungi parasitic on plants in and near the Province of Turin, 1912, P. 

 VoGLiNo {Ann. R. Accad. Agr. Torino, 56 {1913), pp. 115-138). — This is a sys- 

 tematic arrangement of the parasites as noted on various plants in this portion 

 of northwest Italy, including more or less discussion in connection with each. 



Culture studies with. Uredinae, 1911—1913, W. Tranzschel {Mycol. Ccnthh, 

 Ji {191Jf), No. 2, pp. 10, 71). — Results are here sketched of studies carried out 

 on Pticcinia hclianthi, P. elymi, P. perplexans, P. isiacce, P. stipina, P. permixta, 

 P. UttovaUs, and P. opizii; also on the incomplete fungi P. simplex, P. hemcro- 

 calUdis, P. nitidula, and a form said to be a variety of P. stipw-sihiricw and 

 claimed to be a new biological form. 



[The stem rot of cereals], L. Mangin (Jour. Agr. Prat., n. scr., 27 (1914), 

 No. 9, pp. 267-269). — ^This is a brief review of the history of stem rot or foot 

 rot of cereals and of observations concerning that condition, its causation, and 

 treatment, since about the year 1878. Alternation with noususceptible crops, com- 

 bined with eradication of stubble, later planting with employment of drill seed- 

 ing, resistant varieties, and drainage, are given as the chief means of avoiding 

 loss from this source. 



Grain rusts and their control, E. Riehm {Deut. Landw. Presse, J^l {1914), 

 Nos. 51, pp. 631-633, figs. 8; 52, p. 649, figs. 2).— This is a brief discussion of 

 the life history, injuries, effects, and control of Tillctia tritiei, Ustilago hordei, 

 U. avence, and U. oeculta as parasites of wheat, barley, oats, and rye, respec- 

 tively. 



Barley streak disease, H. C. Mijller and E. Molz {Dent. Landw. Presse, 41 

 {1914), A^'o. 17, pp. 205, 206. fig. i).— Reporting tests made looking to the control 

 of Pleospora trichostoma {Helmintlwsporium graminemn) on barley, the author 

 states that treatment of the seed wuth a 0.5 per cent solution of copper sulphate 

 was very successful with winter barley. The hot-water treatment of the seed 

 was not uniformly successful as a preventive, but the intermittent plan gave 

 very good results, and a combination of the hot water with the copper sulphate 

 treatment was successful. Formaldehyde was not successful, and the hot-air treat- 

 ment apparently increased the attack and Impaired germiuability. Temperature 

 during early stages of growth appears to exert some influence on this disease. 



Stinking smut in wheat, H. M. Woolman {Washington Sta. Popular Bui. 73 

 {1914), pp. 8). — A popular preliminary report is giveu of investigations carried 

 on at the station, in part in cooperation with the Bureau of Plant Industry of 

 this Department, for the control of stinking smut in wheat. 



From these experiments it is apparent that the organism may, under certain 

 conditions, be present in the soil and affect the crop in that manner. In treating 



