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
Dept. of Primary Industry and Fisheries
Technical bulletin (Northern Territory. Dept. of Primary Industry and Fisheries) ; no. 295
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Technical Annual Report 2000/01 191 RESOURCE PROTECTION PROGRAM: Resource Protection SUBPROGRAM: Plant Pathology PROJECT: Inspections and Indexing of Plants in Post-entry Quarantine for Interception of Diseases Project Officers: R. Pitkethley, B. Cond and A. Daly Location: Darwin Objective: Detect exotic plant diseases in post-entry quarantine. Background: Ornamentals and tropical fruits usually make the bulk of imported plants in the Berrimah post-entry quarantine facility. The quarantine plant pathologist makes progress inspections and full-term inspections for release. Method and Result: As usual, tropical fruit and ornamental species predominated in post-entry quarantine in 2000-2001. Other species included snake beans. Some problems were experienced when grafting imported mango and longan when some scions and rootstocks died. In mangoes, secondary Aspergillus niger and Fusarium sp. were isolated from the base of the rootstock, while Botryodiplodia theobromae was isolated from the scion where it was apparently acting as a weak or opportunistic pathogen. The problem appears to be due to the slowness of the scion to establish, for one reason or another, preventing the leafless grafted plant to take up water from the potting medium. The result is excess water in the medium with an associated oxygen deficit.