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Journal of Agricultural Research 
Vol. XXV. No. 6 
coconut and cacao has shown that the coconut budrot and the blackrot 
and canker of cacao are caused by the same species of Phycomycete, 
Phytophthora faberi Maubl. The discovery of the identity of these two 
strains is of utmost importance from a control standpoint. Coconut and 
cacao trees should not be interplanted, since the fungus can be readily 
transmitted from one host to the other. 
Similar types of coconut budrot in India and Jamaica have been 
shown by the investigators in those countries to be due to a Phytoph¬ 
thora. The similarity of the strains on coconut and cacao has been 
determined only in the Philippine Islands. A comparative study of 
the Phytophthoras from India and Jamaica would be of interest. 
The presence of other strains of Phytophthora on important eco¬ 
nomic plants in the Philippine Islands, with the possibilities of cross 
inoculation between these, indicates that some may be identical with the 
strains on coconut and cacao. 
LITERATURE CITED 
(1) Ashby, S. F. 
1920. NOTES ON TWO DISEASES OF THE COCO-NUT PALM IN JAMAICA CAUSED BY 
fungi of the genus phytophthora. In West Indian Bui., v. 18, 
p. 61-73. 
(2) BUTLER, E. J. 
1907. AN ACCOUNT OF THE GENUS PYTHIUM AND SOME CHYTRIDIACEAE. In 
Mem. Dept. Agr. India Bot. Ser., v. 1, no. 5, 160 p., 10 pi. Literature, 
p. 142-147. 
1918. fungi and disease in plants, iv, 547 p., 206 fig. Calcutta. Biblio¬ 
graphy, p. 518-531. 
(4) Maublanc, An dr 6. 
1909-10. LES MALADIES DES PLANTES CULTIV^ES DANS LES PAYS CHAUDS. 
Maladies du cacaoyer. In Agr. Prat. Pays Chauds, ann. 9, p. 314- 
324, 393-4071 47 2 - 479 ; !o, p. 5 IO ~ 5 I2 » iUus- 
(5) Pethybridge, George H. 
1913. ON THE ROTTING OF POTATO TUBERS BY A NEW SPECIES OF PHYTOPHTHORA 
HAVING A METHOD OF SEXUAL REPRODUCTION HITHERTO UNDESCRIBED. 
In Sci. Proc. Roy. Dublin Soc., n. s., v. 13, p. 529-564, pi. 42-44. 
Bibliography, p. 561-562. 
(6) Reinking, Otto A. 
1918. Philippine economic-plant diseases. In Philippine Jour. Sci. Sec. 
A., v. 13, p. 165-216, 217-274, 43 fig., 22 pi. 
(7) — 
1919. PHYTOPHTHORA FABERI MAUBL.: the CAUSE OF COCONUT BUD ROT IN 
the Philippines. In Philippine Jour. Sci., v. 14, p. 131-151, 3 pi. 
Bibliography, p. 149-150. 
(8) Rosenbaum, J. 
1917. studies OF the genus phytophthora. In Jour. Agr. Research, v. 8, 
p. 233-276, 13 fig., pi. 71-77. Literature cited, p. 273-276. 
