174 EXPERIMENT STATION RECORD. 



dery mildew ia carried over in its conidial phase from season to season, and gives 

 the results of some of his own observations upon the subject. 



As far as the author's information goes, he has never been able to find any conidia 

 of the fungus on the shoots or bark, although they have been more or less covered 

 with the mycelium. The buds seem to be a common abiding place for the funj 

 during the winter time and the disease is frequently first observed upon the stipules. 



In attempting to combat this disease the author states that the reason why some 

 fungicides are not efficient is that they do not thoroughly wet the plant. On this 

 account Bordeaux mixture and some of the more adhesive fungicides are inadequate, 

 but if the leaves and bunches of fruit are thoroughly wet with a fungicide it is possi- 

 ble to control the mildew. 



On the simultaneous treatment of the powdery and downy mildew, 

 E. Chuakd and ('. Dussekre i Chron. Agr. Canton Vaud, 17 [1904), A T o. 11, pp. 



. -Spraying grapevines with a fungicide composed of Bordeaux mixture to which 

 is added a form of sulphur, which the authors state is easily wet with water, is recom- 

 mended as a treatment for the prevention of both the powdery and downy mild 



This form of sulphur is said to be in the market in 2 qualities, one, which is used 

 as a simple mixture and is applied at the rate of 1 to 3 kg. per 100 liters of Bordeaux 

 mixture, and a second, which contains a portion of carbonate of soda, it is also said 

 that the sulphur may lie used with Burgundy mixture, verdigris solutions, etc. 



Destruction of grape buds by copper sulphate, L. Vekxet ( Prog. Agr. >/ Vit. 

 i Ed. V Est I, 25 ( 1904 I, No. 15, pp. 467, 468). — In order to protect grapes against late 

 spring frosts it is a common practice to cover them with screens of coarse bagging. 

 These are very commonly dipped in a ■"> per cent solution of copper sulphate to pro- 

 tect them against mildew, etc., and prolong their durability. 



The author states that dew and rain falling upon the screens cause the copper sul- 

 phate to go into solution and drop through upon the vines, frequently burning and 

 destroying the buds. In order to prevent this injury he recommends soaking the 

 screens in eau celeste. Rain or dew falling upon this does not make as injurious a 

 fungicide and at the same time the screens protect the buds. 



A disease of coniferous trees, P. Van Biervi if.t (Rev. Gen. Agron. [Lotivain'], 

 13 ( 1904), No. .'/, pp. 166-168). — An account is given of attacks on spruce, silver fir, 

 and other coniferous trees by Botrytis douglasii. As a preventive measure the author 

 recommends the burning of the diseased trees, and where possible spraying with a 

 fungicide composed of copper sulphate 900 gm., copper carbonate 1,360 gm., potas- 

 sium permanganate 85 gm., soft soap 225 gm., and rain water 80 liters. 



Two fungi growing in holes made by wood-boring insects, P. Spaulding 

 {Missouri Hot. Garden Rpt. 1904, PP- 73-77, ph. ./). — An account is given of 2 species 

 of fleshy fungi which were observed in the long-h af pine district of eastern Texas in 

 a region where Pinus paluslris is exclusively cut for timber. After lumbering, the 

 tops and small logs are left on the ground to rot and this material is the home of 

 a great number of wood-boring insects; one species in particular is very abundant, 

 making a hole about ', in. in diameter. On many small logs were found fungi of the 

 Agaricus type, and upon being submitted to Prof. Charles H. Peck they were identi- 

 fied as Flammula sapineus and Claudopus nidulans. 



The fungus mycelium was found in every instance to extend but a short distance 

 into the portions which were tilled with a mass of wood fiberwhich had been chewed 

 up by the borer. The mycelium was found only in the somewhat decayed material 

 in the burrows and apparently never entered into the wood which bounds the open- 

 ing left by the grub. Similar instances are sighted of other fungi which are associ- 

 ated with bark-boring and other insects. 



Revised plant import regulations, C. P. Lounsbdry (Agr. Jour. Cape Good JIujir, 

 . J 4 (1904), A'«. <:. pp. 702-707). — After calling attention to the necessity for the inspec- 

 tion of nursery stock and the dangers from the introduction of diseases, the author 



