378 PATHOLOGY [Bot. Absts. 



2589. Capus, J. Note sur le developpement de quelques maladies des plantes pendant la 

 secheresse. [Note on the development of some plant diesases during drought.] Bull. Soc. 

 Path. Veg. France 5: 94-97. 1919. [Issued April, 1919.] — Statements are made in regard to 

 the development of black rot of grape, sycamore blight caused by Gnomonia veneta, and rust 

 of wheat, during 1918 in France. In April and May there were long, cold, rainy periods fol- 

 lowed by long dry periods in June and July. Infection occurred during the wet periods but 

 the parasites continued to develop during the drought, their appearance being delayed by 

 lengthy periods of incubation. — C. L. Shear. 



2590. Capus, J. Experiences sur le valeur comparee contre le mildiou de la vigne des 

 bouillies cupriques basiques et des bouillies acides. [Experiments on the comparative value of 

 basic and acid copper mixtures for the control of Plasmopara viticola.] Ann. Serv. Epiph. 5: 

 201-209. 1918.— Five different mixtures were employed. Equal protection is afforded by 

 all five mixtures for a period of 20 days but for longer periods the basic mixtures are better. 

 Basic mixtures are immediately effective. Field experiments, which are described, were 

 supplemented by spore germinations studies in the laboratory. — D. Reddick. 



2591. Capus, J. Invasion des cultures de pois en Gironde par Heterodera schachti 

 Schmidt. [Heterodera attacking peas in Gironde.] Ann. Serv. Epiph. 5: 239-244. 1918. — 

 Evidence is presented to show that this nematode is responsible for root rot and death of peas 

 rather than Fusarium vasinjectum var. pisi although the fungus may be present and help to 

 complete the destruction. — Use of nonsusceptible crops in rotation is suggested as a means 

 of control. — D. Reddick. 



2592. Cardin, Patricio. Informe del Departamento de Entomologia y Patologia Vegetal. 

 [Report of the Department of Entomology and Plant Pathology.] Informe. An. Estac. Exp. 

 Agron. [Cuba] 1917-1918: 462-465. 1919.— Review of work in plant pathology. — John A. 

 Stevenson. 



2593. Carpenter, C. W. Report of the Division of Plant Pathology. Hawaii Agric. Exp. 

 Sta. Rept. 1918: 10, 35-45. PL 8-10. 1919.— Freckle or black spot disease (Phoma musae 

 n. sp.) affecting the Chinese banana {Musa cavendishii) is illustrated and described. The 

 diseases of Irish potatoes investigated are as follows: Mite disease, late blight (Phytophthora 

 infestans) , wilt (Fvsarium oxysporum), and early blight (Alternaria solani). An annotated 

 list of diseases affecting coffee and miscellaneous island crops is given.—/. M. Westgate. 



2594. Charmeaux, Francois. L'ensachage du raisin de table, son origine, ses raisons, 

 ses resultats. [The bagging of grapes, its origin, reasons, and results.] Jour. Soc. Nation. 

 Hortic. IV, 20: 52-56, 75-79. March and April. 1919— See Bot. Absts. 3, Entry 2320. 



2595. Cheel, E., and J. B. Cleland. Disease in forest trees caused by the larger fungi. 

 Forestry Comm. New South Wales Bull. 12. 12 p., 20 pi. 1918. — Distinguishing characters 

 and distribution are given for about 20 important timber destroying fungi recorded for New 

 South Wales. — Anna E. Jenkins. 



2596. Chiffot, J. Sur la presence de 1'ergot de seigle sur le ble dit du Manitoba. [The 

 presence of ergot of rye on Manitoba wheat.] Bull. Trimest. Soc. Mycol. France 34: 192-194. 

 PI. 8. 1919. — The author discusses Claviceps purpurea variety tritici which he found on Can- 

 adian wheat. [See next following Entry, 2597.] — Fred C. Werkenthin. 



2597. Chifflot, J. Sur la presence de 1'ergot de seigle sur le ble dit "du Manitoba." 

 [The occurrence of ergot of rye on "Manitoba" wheat.] Bull. Soc. Path. Veg. France 5: 80-82. 

 1918. [Issued April, 1919.] — The presence of this parasite on Canadian wheat recently intro 

 duced into France is reported. It is suggested that this form may be sufficiently distinct to 

 be called Claviceps tritici manitobae. — More investigations and observations are necessary in 

 order to determine the danger from this parasite and whether it will pass from wheat to rye 

 or to other grasses. [See next preceding Entry, 2596.] — C. L. Shear. 



