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Technical annual report 2000-01



Technical annual report 2000-01


Dept. of Regional Development, Primary Industry, Fisheries and Resources technical annual report; Department of Regional Development, Primary Industry, Fisheries and Resources technical and annual report; Reports; PublicationNT; Technical bulletin (Northern Territory. Dept. of Primary Industry and Fisheries) ; no. 295




Made available via the Publications (Legal Deposit) Act 2004 (NT).






Agriculture -- Northern Territory -- Periodicals; Fisheries -- Northern Territory -- Periodicals

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Dept. of Primary Industry and Fisheries

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Technical bulletin (Northern Territory. Dept. of Primary Industry and Fisheries) ; no. 295



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Technical Annual Report 2000/01 217 possibly been confused with the pink wax scale C. rubens Maskell, a common pest on mangoes, citrus, avocados, rambutans and numerous other tree and ornamental crops but is regarded as less damaging than pink wax scale. After intensive field searching in the NT and further detections at Nhulunbuy and Townsville, the leafhopper appears to be a new species distinct from A. devastans and possibly confined to beach hibiscus Hibiscus tiliaceus. Insectary and limited field host preference trials appear to corroborate this hypothesis. A further "post-East Timor survey was conducted during the 12 month period, at the end of the Wet season in May-June. No important detections were made although several hundred specimens were collected and many hundreds of others examined in the field without collection. Trapping for melon thrips (Thrips palmi Karny (Thysanoptera: Thripidae)), Poinsettia whitefly (Bemisia tabaci type-B) and Western flower thrips (Frankliniella occidentalis Pergande (Thysanoptera: Thripidae)), continued in 17 nurseries in the Darwin region and four nurseries in the Alice Springs area during the year. Poinsettia white fly was detected in Alice Springs, but after treatment, appears to have been eradicated. The ash white fly Siphonius phillyreae (Haliday) (Hemiptera: Aleyrodidae) was detected on Alice Springs properties. This species had first been recorded in Australia several years earlier. Following detection of Queensland fruit fly Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) in the Ti Tree area during late December, an eradication program was mounted on three Accredited Production Areas (APA) to regain area freedom. At 30 June 2001, one area encompassing nine properties had regained area freedom and the other two APAs were expected to regain that advantage within several months. PROJECT: Dissemination of Information Project Officers: All Branch Officers Location: Territory wide Objective: Provide relevant agricultural entomology information to a range of clients. Background: The Branch is the main provider of information on agricultural entomology relevant to the Northern Territory. All primary producers, government employees and the general public may request information on a wide range of insect pest problems. This information is normally provided in the form of telephone discussions, onfarm visits, examination of submitted specimens, original or annotated Departmental Agnotes, extracts from published works or illustrated talks, media interviews and lectures. The provision of advice occurs through the Entomology Branch offices in Darwin and Katherine. In addition, the Branch provides data on arthropod occurrence and distribution to national and international organisations which is frequently used for pest management or trade purposes. In conjunction with the NT Parks and Wildlife Commission, all applications for the introduction into, or release from quarantine, of biological control agents used against agricultural pests, diseases and weeds are reviewed by the Branch as part of an Australia- wide assessment. Results: In providing a pest and disease identification and advisory service to primary producers, government departments and the public, the Entomology Branch processed more than 2,200 enquiries during the year. In addition, Branch Officers attended eight technical or scientific conferences/workshops, presented 11 publications and conference papers and provided display material for 14 events during the year. Numerous radio interviews were conducted and 14 articles on entomological matters were provided to local newspapers. Talks were also presented to visiting groups of primary and high school students and project information made available for universities in the NT and interstate. Insect display materials were provided