Pest, disease and weed management

Permanent URI for this collectionhttp://elibrary2.sugarresearch.com.au/handle/11079/13843

Research outcomes: A comprehensive RD&E program that addresses existing and emerging pests, diseases and weeds, allowing sugarcane growers to manage their crops efficiently with minimal environmental impacts. An enhanced industry capacity to deal with incursions of exotic pests, diseases and weeds.

Browse

Filters

1997 - 19982

Advanced Search

Filter by

Settings

Author: search.filters.author.Oehlschlager, AC

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Field Experiments to Optimise Lures for Mass-Trapping of Cane Weevil Borer
    (BSES, 1998) Robertson, LN; Giblin-Davis, RM; Oehlschlager, AC
    Cane weevil borer, Rhobdoscelus obscurus (Biosduval) (Coleoptera: Curculionidae: Rhynchophorinae), is an introduced pest of sugarcane in Queensland, Hawaii and Fiji. It was accidentally introduced from Papua New Guinea about 1900 with sugarcane planting material (Veitch 1917). Previous research showed that male cane weevil borers produce aggregation pheromones which attract both male and female cane weevil borers. Three compounds emitted by feeding males were identified by Dr R Gries ata Simon Fraser University (see Robertson et al 1997). These compounds were synthetically produced by ChemTica Internacional SA and two of these, 2-methyl-4-octanol and 6-methyl-2-hepten-4-ol (rhynchophorol), were shown to be the active compounds for attracting cane weevil borer (Robertson et al 1997). The experiments reported here were designed to determine the optimum ratio of the two active compounds to attract cane weevil borer. In addition, the relative attractiveness of they synthetic lures was compared with that produced by feeding male cane weevil borers. Finally, a chemical known to increase trap catches of other species of Rhynchophorinae, ethyl acetate (marketed as 'Weevil Magnet'), was tested for its ability to synergise the attractiveness of the aggregation pheromones.
  • Thumbnail Image
    Item
    Field Evaluation of Aggregation Pheromones for Mass-Trapping of Cane Weevil Borer
    (BSES, 1997) Robertson, LN; Giblin-Davis, RM; Oehlschlager, AC; Gries, R
    Sugarcane weevil borer, Rhobdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae: Rhynchophorinae), is native to Papua New Guinea, but was accidentally introduced to Queensland, Hawaii and Fiji with imported sugarcane material in the late 1800x (Veitch 1917). the larval stage is a serious pest of commercial sugarcane in those countries, and is also a minor pest of palms in queensland (Halfpapp and Storey 1991). Males of several species of Rhynchophorinae are known to produce pheromones which attract both males and females (Giblin-Davis et al. 1996.) Chang and Curtis (1972) first showed that males of R. obscurus release a pheromone after feeding on fermenting sugarcane. Fermenting sugarcane is also attractive to R. obscurus (Bell 1937). The aggregation pheromones of several species of Rhynchophorinae have been chemically identified and synthesised. Oehlschlager et al. (1995) has tested synthetic rhynchophorol as a method of removal trapping of the palm weevil, Rhynchophorus palmarum (L.), in oil palm plantations in Costa Rica.