Juxe, 1920| PATHOLOGY 385 



2645. FOEX, Et. Note sur !e pietin du ble. [Note on the foot disease of wheat.] Bull. 

 Soo. Path. Ve"g. France 6: 52 54. Mi June, L919. Two diseasi i of wheat are said to occur 

 in France under this common name; one caused by Leptosphaeria kerpotrichoidet and the 

 other by Ophiobolus graminis. The former fundus generally attacks the plant a certain 

 distance above the soil and on one side, whereas the latter develops at the base of the culms 

 and sometimes beneath the soil and surrounds the stems. Mature ascospores of L. herpn- 

 trichoides were first found August L5. From this time until May of the following year asco- 

 Roores were found, thus providing material for infection of both winter and spring wheat. 

 Cercosporella herpotrichoides was found associated with the Leptosphaeria and also with 

 Ophiobolus herpotrickus. Its genetic connection with one or the other was suspected but 

 not proved. Both species of Ophiobolus mentioned were found associated with the Lepto- 

 sphaeria in some cases. The disease was found to attack oats as well as wheat. Spring 

 sowing, rotation of crops especially with legumes, fertilization with nitrate of soda and 

 sanitation are recommended for prevention. Application of 1000 kilos per hectare of iron 

 sulphate was found very effective in preventing the disease. [See next two preceding Entries, 

 2013. 2644.]— C. L. Shear. 



2646. Frank, Arthur. Early fall spraying for apple anthracnose effective. Better 

 Fruit 14 l : 7-8. July, 1919. — -To prevent rotting of fruit from anthracnose (Xeofabraea mali- 

 corticis) apple trees were sprayed early in the fall with Burgundy mixture, Bordeaux mix- 

 ture 3:4: 50, and lime-sulphur solution 1 : 40. The sprays were applied on September 24 

 and the stored fruit examined and final count taken on March 21. Best results were obtained 

 with Bordeaux mixture followed closely by Burgundy. Spraying with either of these mix- 

 tures after the picking of fruit resulted in almost complete control of new infections on twigs 

 and limbs of all treated trees. — .4. E. Murneek. 



2647. Fromme, F. D. The nematode disease of wheat in Virginia. Virginia Agric. Exp. 

 Sta. Bull. 222. 12 p., 4 fig. 1919. — This disease, caused by Tylenchus tritici, was first re- 

 ported in Virginia in 1917, and is now known to occur in 33 counties. Distribution and 

 severity of infection are shown by means of a table and map. The losses in a number of 

 fields amounted to 25 per cent of the crop, and in one case exceeded 50 per cent. The greatest 

 losses seem to occur in connection with consecutive wheat cropping. Symptoms, means of 

 dissemination and control measures are described. In seed treatment tests it was found that 

 a mechanical removal of galls from the seed was sufficient to insure freedom from infection 

 from this source. This was most easily accomplished by skimming the galls off in salt 

 brine. A close relation was found between the percentage of galls harvested and the per- 

 centage seeded. No marked differences in the susceptibility of the five varieties of wheat 

 commonly grown in the State were found. Recommendations for control include the use of 

 seed free from nematode galls and rotation. — F. D. Fromme. 



2648. Fitjiguro, Yosabtjro. A list of fungi on cultivated plants in Formosa. (Supple- 

 mental notes.) Bot. Mag. Tokyo 32 : (358)-(363). 1918.— A list of 100 host plants with fungi 

 occurring on them. — Anna E. Jenkins. 



2649. Gaines, E. F. Two important varieties of winter wheat. Washington [State] 

 Agric. Exp. Sta. Popular Bull. 116. 7 p., 2 fig. 1919.— See Bot. Absts. 3, Entry 1865. 



2650. Galloway, B, T. Giant crowngalls from the Florida Everglades. Phytopath. 9: 

 207-208. 10 pi. 1919. — Crowngalls caused by Bacterium tumefaciens were found on Ficus 

 aurea. One weighing 97£ pounds is believed to be the largest recorded. — F. R. Jones. 



2651. Gentner, Georg. Ueber durch Macrosporium sarciniforme Cav. hervorgerufene 

 Erkrankungen der Luzerne und des Klees. [On a disease of lucerne and clover caused by 

 Macrosporium sarciniforme.] Prakt. Bl. Pflanzenbau u. Schutz 16: 97-105. 2 fig. 1918 — 

 A leaf and stem disease of lucerne has been observed in Bavaria for several years increasing 

 in infested fields and reducing the stand. Diseased leaves placed in moist filter paper pro- 



