156 EXPERIMENT STATION RECORD. 



Studies on potato diseases, ('. Wehmkr (Centbl. Bakt. u. Par., 2. AM., 3 (1897), 

 Xos. 23-24, pp. 646-G5S ; 25-26, pp. 727-743. pis. 2).— Experimental studies are re- 

 ported on Phytophthora and Fusarium diseases. In addition to Fusarium solani, tin* 

 author states that F. moschatum and Spicaria solani attack the potato and produce 

 symptoms quite like the ordinary Fusarium disease. 



Investigations concerning a new potato disease, K. Sato ( Prometheus, 1898, 

 Xo. 3, pp. 136-140). 



Potato scab and its prevention, HoLURTJNG (Ztschr. Naturw., 70 (1898), No. 3, 

 pp. 226, 227). 



Experiments in soaking seed potatoes for the prevention of scab, Teichert 

 {Ztschr. Spiritusind., 21 (1898), Xo. 13. p. 119). 



Experiments in the repression of potato scab, T. Pemy (Ztschr. Spiritusind., 21 

 (1898), Xo. 7, pp. 57-/>9). 



Phytophthora infestans and the potato rot, E. Roze (Bui. Soc. My col. France, 14 

 (1898), Xo. 2, pp. 58-69). 



A new generic type of Schizomycetes, E. Roze (Bui. Soc. Mycol. France, 14 

 (1898), Xo. 2, pp. 69-74, pi. 1). — The author characterizes a new genus of Schizomy- 

 cetes, to which the name Chatinella scissipara is given. It was found in decaying 

 tulip leaves and in the parenchyma of potatoes. 



Culture experiments with hetercecious fungi, H. Klebahn (Ztschr. Pflanzen- 

 krank., 8 (1S9S). Xo. 1, pp. 11-30, fig. 1).— The author reports culture experiments 

 with the secidia from Bibes nigrum, with Vaccinia carids, P. schroeteriana, the secidia 

 of orchids, and puccinia of Phalaris arundinacea, and the specialization of Puccinia 

 smilacearum digraphidis, P. phragmites, I', coronata, P. dispcrsa f. secalis, P. cari-bis- 

 tortce, and P. menthw. 



Recent investigations on the leaf spot of beets, Frank (Ztschr. J'er. Bubenz. 

 Ind., 1897, p. 589; aba. in Centbl. Bakt. u. Par., 2. AM., 3 (1897), No. 25-26, pp. 754, 

 755). — The author descrihes the action of Cercospora beticola on beet leaves, and rec- 

 ommends soaking seed for 21 hours in a sort of Bordeaux mixture before planting. 



Heterodera radicicola on the roots of Corylus avellana, C. Casali (Giorn. Vit. 

 e Enol., 5, Xo. 6). 



Results of field experiments conducted in 1896 with the wet and dry rots 

 of sugar beets, Frank (Fiihling's Landiv. Ztg., 46 (1897), No. 22, pp. 663-672). 



Trials of methods of combating smut in barley, G. Grotenfelt (Landtbr. Slyr. 

 Meddel., 1897, No. 20, pp. 133-140). — Trials were made with the Jensen hot-water 

 method, Ceres powder, and the carbon bisulphid method. 



Investigations on the root disease of grapevines, J. Behrens (Centbl. Halt. u. 

 Par., 2. AM., 3 (1897), Nos. 21-22, pp. 584-589; 23-24, pp. 639-645; 25-26, pp. 743-750).— 

 Studies are given on Dematophora necatrix and allied forms. 



On the application of fungicides to grapevines, D. McAi.pixk (Ztschr. Pflanzen- 

 krank., 8 (1S9S), Xo. 1, p. 11). — Notes the advantageous use of a 10 per cent solution 

 of sulphuric acid as a wash for the prevention of grape anthracnose. 



Effect of temperature on the action of sulphur on grapes ( Ztschr. Pflanzenkrank., 

 8 (1898), No. I '. pp. 55, 56). — The best results where sulphur was used to prevent the 

 grape Oidiuni followed applications made soon after pruning, the temperature being 

 between 2.~> and 31 C. 



Spraying peach trees for peach curl ( Canad. Hurt., 21 (1898), Xo. 6, pp. 236, 237, 

 figs. 2). — A test of Bordeaux mixture for leaf curl of peaches is noted. Very good 

 results were obtained. 



New copper fungicides, L. Degrclly (Prog. Agr. et Vit., 29 (1898), No. 18, pp. 

 445-447). — A new fungicide, composed of sulphate of copper 3 kg., lime 1 kg., and 

 desiccated white of egg or dried blood 100 gm., is described. It is claimed for this 

 mixture that it will remain on leaves for months, ordinary rains not washing it off. 



On the use of benzin and carbon bisulphid for nematodes, etc., J. Rit/.ema- 

 Bos (Ztschr. Pflanzenkrank., 8 (1898), Xo. 1, pp. 42-46, fig. /).— A description is given 

 of an injector for the use of these insecticides against nematodes, phylloxera, etc. 



