Oct. 8, 1917 
Endrot of Cranberries 
4i 
SUMMARY 
Endrot is a disease of the cranberry caused by a fungus which does not 
appear to have been described heretofore. 
It has been found to occur in all of the cranberry-growing sections of 
the United States and in the past few years has occasioned considerable 
loss especially to the Late Howe variety. 
The rot usually starts at either the blossom or stem end of the berry, 
finally producing complete softening of the fruit. 
The causal organism is a sphaeropsidaceous fungus which is here 
described and named ^Fusicoccum putrefaciens, n. sp.” 
Only the pycnidial form has been produced in culture. It is suspected 
on circumstantial evidence of being genetically related to a species of 
Cenangium resembling C. urceolatum Ellis. 
Cultures produce a characteristic series of colors in the mycelium, and 
pycnidia and pycnospores are produced especially on stems of Melilotus 
alba. 
Spraying experiments in Massachusetts have shown that this rot can 
be largely prevented by the use of Bordeaux mixture. 
Some injury to the cranberry vines has been associated with the appli¬ 
cation of Bordeaux mixture on the experimental plots at the Cranberry 
Experiment Station in Massachusetts, but not elsewhere. The cause is 
being investigated. 
LITERATURE CITED 
(1) Cooke, M. C., and Eixis, J. B. 
1877. new JERSEY fungi. In Grevillea, v. 6, no. 37, p. 1-18, pi. 95-96. (Con¬ 
tinued article.) 
(2) Frankun, H. J. 
1913. state bog report. In Rpt. 26th Ann. Meeting Cape Cod Cranberry 
Growers’ Assoc., 1913, p. 17-47. 
( 3 ) - 
1915. REPORT OF CRANBERRY SUBSTATION FOR 1914. MaSS. Agr. Exp. Sta. Bui. 
l60, p. 91-117. 
( 4 ) - 
1916. REPORT OF CRANBERRY SUBSTATION FOR 1915. MaSS. Agr. Exp. Sta. Bui. 
168, 48 p. 
(5) -and Morse, F. W. 
1914. REPORTS ON EXPERIMENTAL WORK IN CONNECTION WITH CRANBERRIES. 
Mass. Agr. Exp. Sta. Bui. 150, p. 37-68. 
(6) Shear, C. L. 
1912. REPORT OF CO-OPERATIVE CRANBERRY SPRAYING EXPERIMENTS IN MASSACHU¬ 
SETTS for 1911. In Rpt. 25th Ann. Meeting Cape Cod Cranberry Growers’ 
Assoc., 1912, p. 9-13. 
(7) —■ 
1913. CRANBERRY SPRAYING EXPERIMENTS IN MASSACHUSETTS IN 1912. In Rpt. 
26th Ann. Meeting Cape Cod Cranberry Growers''Assoc., 1913, p. 9-14. 
