Territory Stories

Technical annual report 2000-01

Details:

Title

Technical annual report 2000-01

Collection

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

Date

2001-10

Description

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

Notes

Date:2001-10

Language

English

Subject

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

Publisher name

Dept. of Primary Industry and Fisheries

Place of publication

Darwin

Series

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

ISSN

0158-2763

Copyright owner

Check within Publication or with content Publisher.

Parent handle

https://hdl.handle.net/10070/223369

Citation address

https://hdl.handle.net/10070/687151

Page content

Department of Primary Industry and Fisheries 202 cucumbers had blisters. The growers were advised to remove infected plants and to control aphids. However, the virus was traced to a long-standing mosaic virus infected long melon crop in a neighbouring farm. Inoculation work with herbaceous indicators on some samples was commenced late last financial year and completed early this financial year. The samples indexed as ZYMV rather than PRSV-W or WMV2. The critical reactions were severe systemic mosaic rather than local lesions on Kiwano (Cucumis metuliferus) and Cucumis melo cv. 633-3, absence of chlorotic lesions and failure to recover virus from inoculated leaves of okra (Hibiscus esculentus), and strong chlorosis of new growth leaves of inoculated sinqua (Luffa acutangula). Work last year and this year demonstrated that both Jap gramma (Cucurbita moschata) and long melon (Lagenaria siceraria) are important hosts in the epidemiology of virus spread onto commercial farms. These two hosts act as long term reservoirs of the virus, and are particularly important in the epidemiology of the disease where they are grown and on nearby farms. It would be beneficial to replace these two plants with resistant lines in the Asian vegetable production system to eradicate serious cucurbit virus problems. PROJECT: Management System for Diseases of Peanuts Project Officer: S. Bellgard Location: Katherine Research Station Objective: Sustainable peanut farming systems Background: Leaf spot and Rhizoctonia limb blight are the two major disease problems in commercial peanut production. Two commercial peanut farms were visited fortnightly since planting to monitor the incidence of leaf spot. Additionally, an on-farm trial at Early Storms, Douglas Daly Region, is testing the efficacy of tebuconazole on Rhizoctonia limb blight. Results: The observation is continuing to investigate wet-season rotation cover-crop options that will aid in the reduction of soil borne leaf and limb disease inoculum. PROJECT: Management System for Diseases of Sesame Project Officer: S. Bellgard Location: Katherine Research Station Objective: Sustainable sesame farming systems. Background: Together with the Sesame Industry Development project we have started an investigation of disease tolerance in commercial sesame cultivars.