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INSECT CONTROL AND THE NEW SYSTEMIC INSECTICIDE FOR HOPS
Author(s) -
Ripper W. E.
Publication year - 1951
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1951.tb01613.x
Subject(s) - insect , toxicology , biology , hop (telecommunications) , botany , computer science , computer network
Following a description of the characters of the principal insect pests of hops, an account is given of the development of organo‐phosphorus insecticldal preparations. One of these, now in use, is absorbed into the plant sap and proves lethal to sap‐sucking insects without killing predatory insects such as ladybirds which merely suffer contact with the spray. The protective effect is long‐lasting, and whilst treatment within 6 weeks of hop picking is not recommended, there is no evidence that the sprayed plants are toxic to higher animals a short time after treatment.