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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 2000/01 181 PROGRAM: Ornamental Industry SUBPROGRAM: Nursery PROJECT: Nursery Industry Accreditation Scheme Australia Project Officer: M. Connelly Location: Various nursery businesses Objective: To ensure the NGINT representative has acquired the knowledge to implement and monitor the NIASA scheme for the NT nursery industry and to conduct a survey of the industry yearly for at least two years. Three nurseries retained their accreditation through the reported period. In addition to these, a fourth business attained full accreditation and two others continue to develop their nursery to the national best practice level that would warrant full accreditation. A Nursery and Garden Industry NT (NGINT) NIASA technical committee was successfully established and all administration and decisions are now undertaken by it. The appointment of a NIASA technical officer has yet to be resolved and is inhibiting the complete hand over of the NIASA scheme functions to industry; however this will take place in 2001. PROJECT: Nursery Product Diversity and Promotion Project Officers: M. Connelly, M. Hoult, J. Thomas, R. Aiton and C. Ford Location: BARC Ornamental block Objective: To identify new nursery products and to produce required visual displays and associated printed material. Palms In collaboration with local palm producers a palm poster depicting the main commercial species and their cultural requirements was prepared for printing. Euphorbia Further bulking up of the Thai hybrids of Euphorbia milii occurred with Erwinia chrysanthemi -biotype IV, a bacterial soft rot, which is proving troublesome in several accessions. This pathogen is prevalent during the Wet season and good nursery hygiene is essential in its management on Euphorbia. A bract spotting fungus, possibly Corynespora cassicola, was also prevalent during the Wet, particularly on white bracted cultivars exposed to rain. Selective use of fungicides and cover from rain should control this pathogen on susceptible accessions. The main insect pests have been mealy bug, white fly and scale, which are easily managed. Occasionally caterpillars have caused damage to foliage and flowers but can be easily managed. Of the 47 accessions that were released from postentry quarantine, three have been lost due to soft rots and four are duplicated, that is, EU 5 is the same cultivar as EU 22 and EU 17 is the same cultivar as EU 18. There may well be duplicated introductions with the later accessions as well. Release of material to the public will occur in 2001, now that sufficient numbers have been propagated.