462 EXPERIMENT STATION RECORD. 



Puccinia from D'iticnm caninum are reported, from which it is claimed the ^cidium 

 adxx is to ])e associated with a Puccinia of the type of P. persistans on Triticum can- 

 inum. Basidiospores of Puccinia buxi sown upon young box leaves gave positive 

 results. The infection was one month in becoming manifest, and the teleutospores 

 were formed the following year. 



Blight of maize, J. Marwick {A(jr. Jour. Natal, 3 {1000), No. 11, pp. 321-323).— 

 A popular account is given of a disease of maize due to some apparently unknown 

 cause. The affected plants are stunted in growth, have stripped leaves, and are 

 generally worthless. 



The diseases of the sug'ar beet, A. Stift ( Die Krankheiten der Zuckerrube. Vieniia : 

 \V. Prick, UtOO, j>/>. Vni+115,pls. 15). 



A contribution to the bacterial disease of sugar beets, A. Stift {Ztschr. Pflan- 

 zenkrnnk., 10 {1900), No. 1, pp. .5-15, fig-t. J). — An account is given of a bacterial 

 disease of sugar beets, a description of the organism isolated, and its effect as shown 

 by inoculation experiments and analyses of diseased roots. 



The heart rot of beets, J. Parfondky {Jour. Soc. Roy. Agr. L' Est., Belg., 1900, 

 p. 326). 



A new disease of radishes, G. R. B. von Mannagetta {Sitzher. Deut. Natuno. 

 Med. Ver. Biihmen-Lutos, 1899, No. 8, pp. 3). 



Diseases of the potato and their treatment, II. Potel {Bol. Inst. Agron. Sao 

 Paulo, 10 {1900), No. 11-12, pp. 795-799). 



The yellow blight of potatoes {Agr. Gaz. Neiv South Wales, 11 {1900), No. 8, p. 

 683). — A brief quoted reference to this disease in Ireland is given. It is said to be 

 accompanied by the stalk disease due to Peziza postuma and a root rot, neither of 

 which is characterized. 



Results of seed treatment of potatoes, H. Koch {Deut. Landw. Presse, 

 37 {1900), No. 25, p. 295). — Seed tubers of 4 varieties were soaked for 24 hours in 

 Bordeaux mixture before planting. The plants from the treated seed were 3 or 4 

 days later in coming up than the untreated, but were stronger and more healthy. A 

 considerably increased yield, attributed to the treatment, is recorded for all the 

 varieties. 



On the prevention of potato rot, T. Ritter von Weinzierl {Pub. K. K. Samen- 

 Control Sta. Wien, No. 199, pp. 3-5) . — Spraying with Bordeaux mixture, 2 kg. copper 

 sulphate, 2 kg. lime, and 100 liters water is recommended. Three applications are 

 advised. 



A nematode disease of rye, L. Mangin {Jour. Agr. Prat., 1900, I, No. 20, pp. 

 707, 706").— Describes a disease of rye due to Tglenchus derastatrix. The nematodes 

 produce bulb-like enlargements of the roots. Rotation of crops is recommended as 

 the most favorable means of prevention. 



The life history of the tobacco nematode (Heterodera radicicola) and its 

 destruction, J. Van Breda de Haan {Bui. Inst. Bot. Buitenzorg, 1900, No. 4, 

 pp. 1-10). 



Notes on some galls produced by Heterodera radicicola, M. Molliard {Rev. 

 den. lint., 12 {I'.iOo), No. 185, pj). 157-105, pi. 1, Jig. 1). — Histological structures of 

 galls on melons, colnis, etc., are <lescribed. 



Nematodes and ammonium salts, H. d'Anchald {.lour. Agr. Prat., 1900, I, No. 

 20, pp. 711, 712) . — Gas liquor and solutions of chlorid and nitrate of ammonia are said 

 to be destructive to nematodes and the efficiency of the treatment lasts over 2 years. 

 In order that all nematodes should be destroyed repeated applications, extending 

 over several years, are reconmiended. 



A new method of combating nematodes, H. Wilfarth {Ztschr. Ver. Deut. 

 Zuckerind., 1900, No. 529, I], pp. 195-204). 



Demonstration of crown gall contagion {Pacific Rural Press, 59 {1900), No. 21, 



