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NETTLEHEAD IN HOPS
Author(s) -
DUFFIELD C. A. W.
Publication year - 1925
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.1744-7348.1925.tb04245.x
Subject(s) - biology , hop (telecommunications) , ditch , hedge , heterodera , botany , horticulture , ecology , nematode , engineering , telecommunications
SUMMARY1 Under the name “Nettlehead” two quite distinct diseases, “true” and “false,” have been noticed. 2 In the case of “False” Nettlehead the bine usually dies away in August and the root system is in a state of decay; in the “True” form the bine remains green though growth is retarded, at the same time the root system remains in an apparently healthy state. 3 The “True” form is usually to be found starting from the edge of a garden especially where the garden slopes down to a deep ditch or high hedge. “Fahe” Nettlehead, on the other hand, may be found distributed throughout the garden. 4 The Beet eelworm, Heterodera Schachtii , may be found in all hop gardens, but its presence is not correlated with “Nettlehead.” 5 “True” Nettlehead has been in greater evidence the year following a bad attack of aphis.