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Epidemiological aspects of blackspot disease of roses caused by Diplocarpon rosae Wolf
Author(s) -
SAUNDERS P. J. W.
Publication year - 1966
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1966.tb05076.x
Subject(s) - biology , splash , conidium , incubation period , crop , horticulture , incubation , botany , ecology , meteorology , biochemistry , physics
SUMMARY Conidia of Diplocarpon rosae Wolf are dispersed mainly by water‐splash. Within a crop the spread of the disease can be traced from primary foci. Infection follows the ‘compound interest’ pattern, sensu van der Plank (1963), which is typical of most leafspot diseases. Accumulation of inoculum, together with certain conditions of rainfall and temperature in August, led to a characteristic, rapid development of the disease in September 1963 and 1964, after an incubation period of 2–4 weeks.