No. 1, August, 1920] PATHOLOCY 101 



746. Hecke, Ludwig. Die Frage der Bekampfung des Getreiderostes. [The problem of 

 controlling cereal rusts.] Nachrichten Deutsch. Landw. Gesell. Osterreich. n. s. 2: 140-142. 

 1918. — In wheal regions of Austria the rusts cause damage to cereals in the following order: 

 to wheat, yellow rust, brown rust (P. dispersa, I', triticina), black rust ( /'. graminix); to rye 

 the same; to oats, black, crown rust (P. coronift ra) ; to barley, dwarf rust (P. simplex), black 

 rust, yellow rust. The yellow is the most destructive in rust years; brown rust attacks late. 

 Black rust is injurious chiefly in hilly sections. In southern pan, /'. maydia is general and 

 injurious. [Through abstr. by Matouschkck in Zeitschr. Pflanzenkr. 29: 210. 1919.]— 

 /). Reddick. 



747. Jehle, R. A., and others. I. Control of cotton wilt. II. Control of cotton anthrac- 

 nose and improvement of cotton. Bull. North Carolina Dept. Agric. 41 1 (Supplem.) 5-28. 

 Pig. 1-6, and 1-5. 1920.— The first part of this report contains the results of field demonstra- 

 tions in several counties of the Coastal Plain section of North Carolina, in the control of 

 cotton wilt. Dixie Wilt Resistant cotton was successfully grown on infested lands in this 

 section. The report, furthermore, includes data on the known distribution of wilt in North 

 Carolina and factors favoring its prevalence and spread. — The second part deals with demon- 

 strations of the value in cotton anthracnose control, of the selection of disease free seed 

 and improvement through breeding of these selected strains. Cleveland Big Boll and Dixie 

 Wilt Resistant cotton were employed. — R. A. Jehle. 



748. Krout, Webster S. Common diseases of celery. New Jersey Agric. Exp. Sta. 

 Circ. 112. 12 p. 1919. 



749. McCulloch, Lucia. Basal glumerot of wheat. Jour. Agric. Res. 18: 543-551. 

 PI. 62-68. 1920. — This disease is widespread in U. S. A. and occurs on leaf, head and grain 

 of wheat (Triticum) . A dull, brownish black area appears at the base of the glumes, involving 

 usually only the lower third but at times extends over nearly the whole surface. Sometimes 

 the discoloration is on the inner surface of the glume. Dissection of affected spikelets shows 

 more evidence of disease on the inner surfaces than on the outer. The grains inclosed in dis- 

 eased glumes vary from nearly perfect to ones in which the germ end varies in color from a 

 slight brown to charcoal black. — The disease is caused by Bacterium atrofaciens n. sp., for 

 which a technical description is presented. The parasite is a white, polar-flagellated rod 

 producing green fluorescence in ordinary culture media. Group number, 221.2322123. — 

 Artificial infections were secured on leaf and head, the incubation period being about four 

 days. — D. Reddick. 



750. Merino, G. Bud-rot. Philippine Agric. Rev. 12 3 : 92-96. 4 pi. 1919.— A brief 

 compilation of data on the budrot of the coconut palm. — E. D. Merrill. 



751. Moore, J. C. Experiments with parasitic fungus on the cacao thrips. Report on 

 the Agricultural Department, Grenada, 1917-18. Imperial Department of Agriculture, 

 Barbados. 1918. — Spraying experiments on thrips infesting cacao trees with cultures of the 

 fungus Sporotrichum globuliferum, parasitic on Heliothrips rubrocinclus, Giard., are here 

 noted. Although carried out under difficulties, the following points have been demonstrated: 

 (1) The fungus was readily distributed amongst thrips in the field; (2) Under favourable 

 conditions of atmospheric humidity the fungus caused death of large numbers of both young 

 and adult thrips on the inoculated trees; (3) The fungus spread by natural agencies to trees 

 outside the inoculated area. Several considerations of practical importance remain to be 

 determined. — J. S. Dash. 



752. Morgenthaler, Otto. Uber die Mikroflora des normalen und muffigen Getreides. 

 [Microflora of normal and of musty grain.] Landw. Jahrb. Schweiz. 32: 551-571. 191S. — 

 Healthy grain sown in plates shows chiefly bacteria, especially Bad. herbicola, and no fungi. 

 Musty grain yields many fungous thalli and few bacteria. Penicillin are abundant but are 

 not responsible for the odor. What organism does impart the characteristic odor was not 



