574 EXPERIMENT STATION RECORD. 



(Icnirmiii developed in July and August on the bark of I'lrms si/ln'stris is not to be 

 confounded with that r)c'curring on P. strohus. 



Some causes of pine-leaf cast, Frombling {Ztschr. Fnrvt. v. J(i(/t/ir.,^j (1900), 

 No. S, pp. 4'^3-4<i7). — Unfavorable atmospheric conditions are said to cause pine-leaf 

 cast. 



Combating' pine-leaf cast, Kiexitz {Ztschr. Forst. n. Ju<jdii:, 32 {1900), Xo. (J, pp. 

 3(>4-37-J). — Spiay:'n<_'^ young pine trees with Bordeaux mixture between the first and 

 fifteenth of August is reconnnended for the prevention of leaf cast. 



A fungus disease of cottonwood, H. A. Bedford {Canada Expt. Farma Jtpt,^. 

 ISOO, p, 322) . — It is reported that for the past 2 or 3 seasons the cottonwood {Popxdus 

 deltoidea) has been seriously affected by a fungus disease which destroys the leaves. 

 During the summer a growth, resembling rust, makes its appearance on the leaves, 

 especially on the young succulent ones, which in a short time are discolored and fall 

 from the tree. In the following spring a large portion of the wood is found to be in 

 a dying condition. The value of fungicides for controlling this disease will be a sub- 

 ject of investigation during the coming season. 



The influence of copper fungicides on the quality of -wine, E. Chuard ( Chron. 

 Agr. Canton Vaud, IS {1000), Xo. IS, pji. 4-'> 1-4-'j7 ) . — The claim is made that in years 

 when atmospheric conditions are favorable for ripening the grapes the application of 

 copper solutions has no effect upon the quality of wines, Init in cold seasons unfavor- 

 able for ripening the fruit that process is further retarded by the action of the fungi- 

 cide on the jilant whereby its functions of growth are prolonged and the maturation 

 delayed. 



Formalin as a fungicide for bean anthracnose, S. A. Bedford {Canada E.vpt. 

 Farma Rpts. 1899, p. 323). — A series of experiments were conducted in which beans 

 were soaked for 2 hours in a solution of 1 oz. of formalin to 1 gal. of water. The 

 germination of the beans was not aiipreciably affected b}' either this or stronger solu- 

 tions, and the test seems to indicate that formalin is a useful deterrent to the bean 

 anthracnose. 



Potassium permanganate as a fungicide, M. Truchot ( Vigne Amer. el Vit'ic%iU. 

 Europe, 24 {1900), Xo. (i, ]>p. 187-190). — The addition of 125 gm. of potassium per- 

 manganate to 100 liters of copper fungicide or a simple solution of 125 gm. of potas- 

 sium permanganate, 3 kg. lime, and 100 liters of water are recommended as fungi- 

 cides for spraying grapes. 



Acetate of copper as a fungicide, J. Durand ( Vigne Amer. et VUicult. Europe, 24 

 {1900), Xo. 4, ]ip. 118-120). — In efficiency and ease of ajiplication this compound is 

 thought to etpial Bordeaux mixture. 



Preparation of Bordeaux mixture, G. Battanchon ( Yig)ie Amer. et VHicuU. 

 Europe, 24 {1900) , Xo. 7, pp. 198, 199) . — Directions are given for the ])roper prepara- 

 tion of a neutral Bordeaux mixture. The method described is essentially that given 

 in Farmers' Bulletin 38 of this Department (E. S. K., 8, p. 240). 



ENTOMOLOGY. 



Report of the entomologist, J. Fletcher {Canada Expt. Farms 

 EpU. 1800, 2>p- loO-lS}f.,Ji(j^. lo). — Brief popular notes are given on 

 a large number of injurious insects. The Hessian fl}" is reported as 

 having been unusually destructive during the past year. From an 

 examination of specimens collected in various parts of jVIanitoba. it is 

 believed that there is only one brood of the Hessian fly in that region. 

 The remedies recoinmeiided against this insect are late sowing of wheat, 

 burning of rubbish, and l)urning or plowing under the stul »1 )le. / Vyr/- 



