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 144 PROJECT: Improved Citrus Products for the NT - Evaluation of Citrus Cultivars in the Top End Lemon Project Officers: J. Mansfield, C. Kinnaird, A. Maddern and R. Renfree Location: KRS Objective: Identify cultivar/rootstock combinations suitable for both existing and potential markets when grown in various regions of the NT. Help growers to optimise their returns through the production of fruit of the required cultivar and quality for the intended market. There is a strong interest in growing citrus in the Top End. This is because the high temperature during the time when fruit is maturing makes the region ideal for quality, early lemon production. By controlling the growth patterns of the trees, lemons can be produced in January to March when prices on the domestic market are highest. There is also potential for export of lemons into South-East Asian markets such as Japan for the restaurant industry. Method: At Katherine Research Station four cultivars Meyer, Taylor Eureka, Prior Lisbon, and Villa Franca were budded on 15/12/92 to Benton rootstock planted on 14/7/92. Fino and Verna were budded on 15/4/93 to Benton rootstock planted on 14/7/92. For each cultivar, except Meyer, there are two trees. For Meyer there is only one tree. Results and Discussion: The lemon trees were heavily pruned during late 1999 so as to reduce tree size and improve internal branch structure. The trees failed to flower and fruit during the 2000 season and they also did not fruit in the 2001 season except for a small amount of fruiting on the Meyer tree. However, the trees have recovered from the pruning and now have good canopy structure. PROJECT: Improved Citrus Products for the NT - Evaluation of Citrus Cultivars in the Top End - Pummelo Project Officers: J. Mansfield, C. Kinnaird, A. Maddern and R. Renfree Location: KRS Objective: Identify cultivar/rootstock combinations suitable for both existing and potential markets when grown in various regions of the NT. Help growers to optimise their returns through the production of fruit of the required cultivar and quality for the intended market. The pummelo is considered to be the most suitable of the citrus species for tropical conditions. However, a major obstacle to the development of a large-scale pummelo industry in Australia is the lack of thin-skinned, high quality cultivars. The introduction of known overseas cultivars has been severely restricted by quarantine regulations. Citrus canker, citrus dieback and greening, navel orange worm, citrus mal secco, orange stem pitting (OSP) strain of tristeza and citrus fruit borer are all potential quarantine risks that could be introduced via propagating material from overseas. Therefore, it is very difficult and expensive to import cultivars. However, seeds from some overseas cultivars have been introduced. The trees currently grown in