450 EXPERIMENT STATION RECORD. 



Jahrh. Schwch, 20 (IDOG). No. S, pp. Ji.',r,-.',!)0. figsi. ,1). — An extended account is 

 given of experiments in treating seed wiieat and rye with various fungicides 

 for the prevention of tlie stinlving snuit. The fungicides tested were copper 

 sulphate, Ceres powder, hot water, Bordeaux mixture, soda Bordeaux mixture, 

 and formalin. The effect of these different solutions on the germination of the 

 seed and their efficiency in preventing the smut are described at length. 



In conclusion the autlu)r states that while all the treatments are more or less 

 efficient, yet for general jmrposes the use of a solution of formalin is to be 

 preferred. 



The relation of the weather to rust of cereals, W. H. Moreland {Mem. 

 ])ept. Agr. India. Bot. Scr.. 1 {lUOC). So. 2, pp. 53-')8, dgm. 1). — The author 

 has compiled data to show the influence of the character of the season on the 

 rust* of cereals; the amount of rain in October, which determines the wetness 

 of the seed bed ; the average humidity of January and February, and the aver- 

 age of January and February taken together. 



It was found that the amount of October rainfall hps no influence on deter- 

 mining the amount of rust on wheat. Where harvest is earliest the extent of 

 rust varies with the humidity during January. Elsewhere the rust varies gen- 

 erally with the humidity of the months of January and February taken to- 

 gether. 



The occurrence of a case in which barley was badly rusted while wheat was 

 free from it will re(iuire some exjflanation other than weather relations. 



Investigations on the disease of rice called brusone, U. Brizi (Ann. 1st. 

 Agr. [Milan], 5 {1901-190Ji), pp. 77-'>J). — After briefly reviewing the various 

 reputed causes of brusone of rice the author gives an account of experiments 

 carried on with this disease. While he is not able to say definitely what are 

 the causes of the disease, yet from his investigations he concludes that it is pri- 

 marily due to some functional disturl)ance of the root system of the plants and 

 IS not caused by fungi or other parasites. It seems possible so to disturb the 

 normal activities of the plant as to make it readily attacked by different fungi, 

 but the disease can originate indej^endently of all parasitic attacks. 



Some fungus diseases of corn, L. 11. Pammel (Iowa Agr., 7 (1906), No. 2, 

 pp. 47-50). — Popular descriptions are given of corn rust, bacteriosis, eorn wilt, 

 and leaf browning. 



Recent investigations on potato and tomato diseases, O. Appel (Jahreshcr. 

 Ver. Vertreter Angew. Bot., S (1904-5), pp. 122-l.Ui, figs. 2).— Notes are given 

 of recent observations on a luimber of diseases of potatoes. Among them are 

 the speck rot of tubers due to Stijsanus stemonitis, a disease attributed to 

 l^pondylorJadimn atrorirens. injury due to mites, a Fusarium disease, the rot 

 caused by Plnjtophthora infcstans, a leaf rolling disease caused by a Fusarium 

 that is said to be similar to but not identical with F. o.njsponim (E. S. R., 1"), p. 

 1088), a bacterial disease of potatoes, and bl;ick shank of potatoes. 



The early and late blight of potatoes and how to combat them, W. J. 

 Green and C. W. Waid (Ohio 8ta. Circ. 58, pp. .'/). — Descriptions are given of 

 the early and late blight of potatoes and suggestions for their prevention. The 

 cii'cular is issued in advance of a bulletin on the same subject. 



Fungus diseases of sugar cane in Bengal, E. J. Butler (Mem. Dept. Agr. 

 India, Bot. »S'cr., 1 (1906). No. 3. pp. 53, pis. 11). — A preliminary report Is given 

 of the principal fungus diseases which affect sugar cane in Bengal. The cause 

 and characters of the different diseases are briefly described and recommenda- 

 tions made for combating them so far as means are known. 



The diseases described are red rot or red smut (CoUetotrichwm falcatum), 

 smut (TJstilago saccliari), Diplodia cacaoicola, Cytospora sacchari, pineapple 

 disease (ThieJaviopsis ethaccticus), black rot (Spharonania adiposum), brown 



