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Title: Development of an attracticide for heliothine moths: from laboratory bioassay of plants to commercial field trials
Contributor(s): del Socorro, Alice (author); Gregg, Peter (author)orcid ; Hawes, A J (author)
Publication Date: 2009
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Abstract: Our research group, in collaboration with a small Australian-based company, has developed an attracticide (Magnet®) for 'Helicoverpa' moths, that has been recently registered for cotton, beans and sweet corn in Australia. We first screened a number of host as well as non-host plants of 'Helicoverpa' spp. in the laboratory using a two-choice olfactometer to identify plant volatiles attractive to the moths. The majority of the plants tested were significantly attractive to male and female moths, with the Australian natives, 'Angophora floribunda' and several 'Eucalyptus' species being the most attractive plants. Volatile profiles of these plants were determined by GC-MS. Synthetic equivalents of plant volatiles were then tested in the olfactometer singly or in combination as blends. Volatile blends consisting of floral and green leaf compounds were more attractive to moths compared with individual volatiles. For a polyphagous species like 'Helicoverpa armigera', we proposed an approach of "super blending" of volatiles that were in common between attractive plants, rather than mimicking the blend of plant odours emitted by a particular attractive plant. Field wind tunnels and traps were used to test candidate blends in the field. Small-scale field trials on various crops were conducted to determine the efficacy of a five-component blend combined with a small amount of toxicant. Field trials were also conducted to determine its effects on non-target organisms. Commercial trials in cotton demonstrated substantial reductions in heliothine numbers not only in the Magnet®-treated field but also in nearby untreated fields.
Publication Type: Conference Publication
Conference Name: Fifth Asia Pacific Conference on Chemical Ecology - Exploring diversity in life's workings: A celebration of chemical ecology, Honolulu, Hawaii, 26th - 30th October, 2009
Source of Publication: 5th Asia-Pacific Conference on Chemical Ecology Program and Abstracts
Publisher: Asia Pacific Association of Chemical Ecologists (APACE)
Place of Publication: Honolulu, Hawaii
Field of Research (FOR): 079902 Fertilisers and Agrochemicals (incl Application)
070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
HERDC Category Description: E3 Extract of Scholarly Conference Publication
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School of Environmental and Rural Science

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