No. 2, March, 1921] PATHOLOGY 169 



1130. Cockayne, A. H. Fire blight. New Zealand Jour. Agric. 20: 15&-157. 1920.— 

 Fire blight due to Bacillus amylovorus has appeared in New Zealand. Control methods are 

 suggested, and hope of eradication is expressed. — N. J. Giddings. 



1131. Cruchet. Etudes mycologiques. Les champignons parasites du "brome dresse," 

 Bromus erectus Huds. [Fungous parasites of B. erectus.] Bull. Soc. Vandoise Sci. Nat. 51: 

 583-586. 1918. 



1132. Drayton, F. L. The essentials of a Dominion plant disease survey. Ann. Kept. 

 Quebec Soc. Protection of Plants 12: 31-33. 1920.— A paper pointing out the advantages to 

 be derived from a well-organized plant-disease survey of the Dominion of Canada and the 

 necessity for cooperation in this survey. — B. T. Dickson. 



1133. DucoMET, V. Un oidium de la pomme de terre. [A powdery mildew of the potato,] 

 Bull. Soc. Path. Veg. France 7: 57-58. 1920.— An oidium is reported on potato (var. Czarine) 

 in Lotet-Garonne in September. Several species have been reported on potato. It is thought 

 this is probably Erysiphe polygoni, which was also found on weeds among the potatoes. — 

 C. L. Shear. 



1134. Eastham, J. W. Report of the Provincial Plant Pathologist. Dept. Agric. British 

 Columbia Ann. Rept. 14:41-44. 1920.— Yellow rust of raspberries (Phragmidium imitans) 

 caused some alarm by its unusual prevalence early in the season, but did not seem to result 

 in much injury to the crop. Gymnoconia interstitialis has not been recorded in British Colum- 

 bia. Walnut bacteriosis ( Pseudomonas jiiglandis) was severe on certain trees near Vancouver. 

 Western tomato blight (cause uncertain) brought about loss in the southern Okanagan. 

 Experimental spraying for the control of apple tree anthracnose (Neofabraea malicorticis) 

 shows that one early application of 3-4-40 Bordeaux mixture gave good control, and in the 

 case of the variety chosen (Baldwin) gave no extra cost in marketing, the spray material 

 having all disappeared from the fruit during storage preceding packing. As a result of spray- 

 ing, the fruit also kept better. — J. W. Eastham. 



1135. MtJLLER, N. C. Bericht iiber die Tatigkeit der Agrikulturchemischen Kontroll- 

 station und der Versuchsstation fiir Pflanzenkrankheiten der Landwirtschaftskammer fiir die 

 Provinz Sachsen fur die Jahre. 1916 und 1917. Halle a. s. 60 p. 1918.— On pages 25 to 29 E. 

 MoLz reports on diseases occurring in the province. Early blight of potato (A. solani) was 

 wide-spread. Ftisarium culmorum in roots of asparagus was investigated. Stem rot of red 

 clover (Gloeosporium caulivorum) occurred to the extent of 50 to 60 per cent. [Through abst. 

 by: O. VON K[irchner1 in Zeitschr. Pflanzenkr. 30: 22. 1920.]— D. Reddick. 



1136. Pachano, Abelardo. La enfermedad de California o de Anaheim. [The California 

 vine disease.] QuintaNormalEstac.Expt.Circ.il. 8 p. 1918.— The California vine disease 

 has been discovered at Ambato, Ecuador. The symptoms are described, and the theories as 

 to the cause are reviewed. — F. M. Blodgett. 



1137. PtJTTEMANS, A. Sur I'Oidium du Chene au Brazil. [The powdery mildew of oak in 

 Brazil.] Bull. Soc. Path. Veg. France 7: 37-40. 1920.— Quercus pedunculata, which has 

 been introduced into Brazil, has been found to be attacked by several fungi, and in 1912 the 

 powdery mildew was first observed on it in the vicinity of San Paulo. The disease was so 

 severe in September and October that the plants were defoliated. The weather was cold and 

 wet.— The fungus is thought to have been introduced from Europe. In order to determine 

 whether or not the conidia would live for a sufficient period to allow of transmitting the dis- 

 ease from Europe to Brazil, experiments were tried, and it was found that the spores retained 

 the power of germination for a period of from ten to twelve days; this would permit of its 

 transporation from Madeira to Brazil. — C. L. Shear. 



1138. Ramirez, Roman. Dos parasites de la remolacha. [Two beet parasites.] Rev- 

 Agric. [Mexico] 5: 141-142. 1 fig. 1919.— An insect pest and a leaf spot due to Septoria sp. 

 are reported on the beet (Beta vulgaris). — John A. Stevenson. 



