Witches Broom--Continued. 



863. MYERS, J. G. Source of witch-broom infection 

 believed to be wild cacao in Surinam. West India Com. 

 C. 45:43-44. Feb. 6, 1930. 8 W524 



Excerpts from his Notes on wild cacao in Surinam and 

 in British Guiana (Item 589). 



864. OTOYA, F. J., and ROJAS PENA, E. La "escoba 

 de bruja" en la Intendencia del Meta [Colombia]. Agr. 

 Trop. 5(6):47-53. June 1949. 26 Ag8 



Distribution of the disease on plantations in the district 

 and recommendations for combatting it. 



865. PARK, M. Witch-broom disease of cacao. Trop. 

 Agr. [Ceylon] 61:170-173. Ref. Sept. 1933. 26 T751 



866. POUND, F. J. Ecuador: its agriculture in 1937. 

 Agr. Soc. Trinidad & Tobago Proc. 37:335-339. Sept. 

 1937. 8 T73 



Discusses briefly cacao culture and the resistance to 

 witches broom of a strain from Venezuela. 



867. POUND, F. J. The quest for witches' broom 

 resistant trees. Agr. Soc. Trinidad & Tobago. Proc. 43: 

 55-63. Mar. 1943. 8 T73 



Reviews events leading to discovery of highly resistant 

 trees on the Napo River, a tributary of the Amazon. 



868. POUND, F. J. Search for resistance to witch- 

 broom in cocoa. Agr. Soc. Trinidad & Tobago. Proc. 

 40:35, 37. Mar. 1940. 8 T73 



869. POUND, F. J. Witches' broom resistance in 

 cacao. Trop. Agr. [Trinidad] 17:6-8, map. Jan. 1940. 

 26 T754 



Notes on a survey of South American cacao areas in 

 search of immune trees. 



870. RUMEAU, J. Estudios sobre el parasito 

 causante de la escoba de bruja. Ecuador. Depto. de Agr. 

 Rev. l(2):18-26. Apr. 1931. 9.5 Ag8B 



Marasmius perniciosus. 



871. SINGER, R. A monographic study of the genera 

 "Crinipellis" and "Chaetocalathus." Lillia 8:441-534, 

 illus. Ref. 1942. 450 L62 



Transfers Marasmius perniciosus to Crinipellis and 

 describes it as C. perniciosa (Stahel) Sing. comb, nov., 

 p. 503-505. 



872. STAHEL, G. Bijdrage tot de kennis der 

 kruUotenziekte. Surinam. Dept. van Landb. B. 39, 34 p., 

 illus. Ref. Dec. 1919. 9.6 D95 



English translation by B. G. Montserin in Trop. Agr. 

 9:167-176. June 1932. 26 T754 



873. STAHEL, G. De kruUotenziekte in Brazilie. 

 Indische Mercuur 58:71. Feb. 6, 1935. 286.8 In2 



874. STAHEL, G. De kruUoten-ziekte op Trinidad. 

 Indische Mercuur 53:564-565, map. July 2, 1930. 

 286.8 In2 



Summarized in Bergcultures 4:1238-1239, Nov. 15, 

 1930. 22.5 B45 



875. STAHEL, G. [Witch broom disease of cacao.] 

 Agr. Soc. Trinidad & Tobago. Proc. 29:12-16. Jan. 1929. 

 8 T73 



876. STELL, F. Witch broom disease of cacao. Agr. 

 Soc. Trinidad & Tobago. Proc. 28:375-377. Sept. 1928. 



8 T73 



Marasmius perniciosus. 



877. STELL, F. Witch-broom disease of cacao. A 

 review of the position. Agr. Soc. Trinidad & Tobago. 

 Proc. 32:23-31. Jan. 1932. 8 T73 



878. STELL, F. Witch-broom disease of cacao and 

 its control. Trinidad & Tobago. Dept. Agr. B. 21(3):1- 

 14, illus. 1928. 8 T732B 



Comments by A. B. Carr, p. 13. 

 Spanish translation in Ecuador Agr. 2:111-115, Mar. 

 1929. 9.5 Ec92 



879. THOROLD, C. A. Witches' broom disease inves- 

 tigations. V. Large-scale experiments on direct control. 

 Trop. Agr. [Trinidad] 20:176-181. Ref. Sept. 1943. 



26 T754 



880. THOROLD, C. A. Witches' broom disease inves- 

 tigations, vn. Observations on direct control. Trop. "Agr. 

 [Trinidad] 20:239-244. Dec. 1943. 26 T754 



881. TRINIDAD. DEPT. OF AGRICULTURE. Cacao 

 and witches' broom disease (Marasmius perniciosus). 

 Report by Dr. E. J. Pound ... on a recent visit to the 

 Amazon territory of Peru, September, 1942-February, 

 1943. St. Clair? 1943. 14 p., illus., map. 464.09 T73C 



Search for immune or resistant trees. 



882. TRINIDAD. DEPT. OF AGRICULTURE. Cacao 

 and witchbroom disease (Marasmius perniciosus) of 

 South America, with notes on other species of Theobroma. 

 Report by Dr. F. J. Pound ... on a visit to Ecuador, the 

 Amazon Valley and Colombia, April 1937-April 1938. 

 Port -of -Spain, 1938. 58 p., map. 464.09 T73Ca 



Report of a trip in search of strains of cacao resistant 

 to witches broom disease. 



Witches Broom--Continued. 



883. TRINIDAD. DEPT. OF AGRICULTURE. Report 

 of Mr. F. Stell, mycologist. Department of Agriculture, 

 on his visit to Ecuador to study Witchbroom disease 

 (Marasmius perniciosus) of cocoa. Trinidad & Tobago. 

 Leg. Council. Council Paper 1933(137), 12 p., map. 

 464.09 T73 



Appendix: Monilia of cacao, extract from J. B. Rorer's 

 report of this disease in Ecuador, p. 9-12. 



884. TRINIDAD. DEPT. OF AGRICULTURE. Report 

 on special witchbroom control carried out in Turure and 

 Tamana wards, in May and June, 1932, by Mr. S. M. 

 Gilbert. Trinidad & Tobago. Leg. Council. Council Paper 

 1932(76), 20 p., illus. 1932. Libr. Cong. 



Conditions in the area worked and results achieved in a 

 special campaign conducted by the Trinidad Department of 

 Agriculture. 



885. VIEIRA, J. T. "Lagartao" ou "Vassoura de 

 Bruxa." Brazil. Min. da Agr. B. 31(ll):39-45. Nov. 1942. 

 9.2 Ag83 



Witches broom disease: description, causes, and means 

 of defense. 



Also in Soc. Bras, de Agron. B. 5:393-400, illus., Dec. 

 1942. 9.2 Sol3 



886. WARDLAW, C. W. Witch-broom in Suriname. 

 Trop. Agr. [Trinidad] 6:348-349. Dec. 1929. 26 T754 



887. WILSON, J. R. S. La "escoba de bruja" del 

 cacao. Hacienda 24:27, illus. Jan. 1929. 6 Hll 



Marasmius perniciosus. 



Physiological Diseases 



888. HARDY, F. Marginal leaf-scorch of cacao. Its 

 relationship to soil potash deficiency. (With a note on the 

 ecology of cacao thrips). Imp. Col. Trop. Agr. [Trinidad] 

 Cacao Res. Ann. Rpt. (1936)6:13-24, illus. 193'?. 



68.39 Cll 



889. HUMPHRIES, E. C. Studies in the physiology of 

 Theobroma cacao, with special reference to cherelle wilt. 

 Imp. Col. Trop. Agr. [Trinidad] Cacao Res. Ann. Rpt. 

 (1939)9:33-51; (1940)10:12-22; (1941-44)11:23-27. Ref. 

 1940-44. 68.39 Cll 



I. Preliminary investigation of the factors concerned in 

 wilt. II. Growth rate and mineral intake by the pod. 

 III. Leaf-flush and mineral intake by the shoot. [IV.] 

 Progress report. [V.] Further progress report. 



890. HUMPHRIES, E. C. Wilt of cacao fruits 

 (Theobroma cacao). I-V. Ann. Bot. [London] n. s. 7:31- 

 61; 8:57-70; 11:219-244; 14:149-164, illus. Ref. Jan. 

 1943-Apr. 1950. 450 An7 



I, An investigation into causes; II, A preliminary survey 

 of the carbohydrate metabolism with special reference to 

 wilt susceptibility; III, Changes in mineral content during 

 development; IV, Seasonal variation in the carbohydrate 

 reserves of the bark and wood of the cacao tree; V, 

 Seasonal variation in potassium, nitrogen, phosphorus, 

 and calcium of the bark and wood of the cacao tree. 



891. KADEN, O. F. Untersuchungsergebnisse iiber 

 nichtparasitare kakaokrankheiten in San Tom6 und , 

 Principe. Tropenpflanzer 36:321-340. Ref. Aug. 1933. 

 26 T75 



Contents: Die kakaostarre (morte subita); II, Die ^ 



gelbfriichtigkeit oder mela; HI, Friihreife und stein- 

 frijchtigkeit; IV, Der zwergwuchs und die kakaowelke. 



Reprinted, with summaries in French, English, Spanish, 

 and Italian, in Off. Internatl. du Cacao et Choc. B. Off. 

 8:263-277, July/ Aug. 1938. 68.38 Of2 



892. PARK, M. Further notes on cacao disease in the 

 Dumbara Valley [Ceylon], 1933. Trop. Agr. [Ceylon] 83: 

 78-86. Raf. Aug. 1934. 26 T751 



"Sudden death disease" believed caused by marked 

 fluctuations in rainfall and consequently in humidity. 



893. PARK, M. A preliminary note on cacao disease 

 in the Dumbara Valley, 1933. Trop. Agr. [Ceylon] 81: 

 207-211. Ref. Oct. 1933. 26 T751 



Rapid wilting and death attributed to the unusually wet 

 season. 



Virus Diseases 



894. BAKER, R. E. D. Cacao virus diseases. Agr. 

 Soc. of Trinidad & Tobago. Proc. 45:289-294. Dec. 1945. 

 8 T73 



895. BAKER, R. E. D., and DALE, W. T. Notes on a 

 virus diseases of cacao. Ann. Appl. Biol. 34:60-65, illus. 

 Ref. Feb. 1947. 442.8 An72 



In Trinidad. 



27 



