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Persistence and identification of downy mildew Pseudoperonospora humuli (Miy. and Tak.) Wilson in hop rootstocks
Author(s) -
COLEYSMITH J. R.
Publication year - 1964
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.1744-7348.1964.tb03786.x
Subject(s) - downy mildew , biology , rootstock , hop (telecommunications) , humulus lupulus , pseudoperonospora cubensis , botany , agronomy , horticulture , computer network , pepper , computer science
SUMMARY Evidence is presented which suggests that Pseudoperonospora humuli persists, in a high proportion of infected hop rootstocks, for at least 4 years in this country, and the grubbing of these rootstocks is recommended. Methods are described for diagnosis of downy mildew during the dormant season in the field and in the laboratory.