Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 550728
Title Volatile compounds as insect lures: factors affecting release from passive dispenser systems
Author(s) Nielsen, Mette Cecilie; Sansom, Catherine E.; Larsen, Lesley; Worner, Susan P.; Rostás, Michael; Chapman, Bruce; Butler, Ruth C.; Kogel, Willem J. de; Davidson, Melanie M.; Perry, Nigel B.; Teulon, David A.J.
Source New Zealand Journal of Crop and Horticultural Science (2019). - ISSN 0114-0671
Department(s) Biointeractions and Plant Health
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) homologues - methyl isonicotinate - non-pheromone semiochemical - pest management - release rates - Thysanoptera

Knowledge about the behaviour of passive dispensers used to release semiochemicals for insect pest management is essential to ensure the efficacy of monitoring and control methods based on the use of the semiochemicals. The release characteristics of different passive dispenser types (commercial sachet, altered commercial sachet, polyethylene bags and cotton rolls) were investigated in the laboratory under various conditions. Using the volatile compound methyl isonicotinate (MI), a known lure for western flower thrips Frankliniella occidentalis (Pergande) and two additional homologues ethyl and n-propyl isonicotinate the effect of loading amount (0.5, 1.0 or 2.5 ml), temperatures (15°C, 25°C or 35°C) and air flow (0.1–0.15 m/s or 0.25–0.3 m/s) were tested in a low-speed laminar-flow wind tunnel. The results showed zero-order release kinetics for all tested dispenser types. Release rate kinetics relies on the type of molecule, dispenser type, and the climatic conditions with temperature being a major determinant of release rate. The results of the release characteristics of the different dispensers are discussed in regards to their practical use under greenhouse and field conditions.

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