|| Home || Search || Contact || Free Publications || Eshop || Privacy Statement ||
RIRDC Completed Projects in 2003-2004 & Research in Progress as at June 2004
|
|
|||||
|
No |
|
|
|
|
|
System Design and Environmental Sustainability
|
|
|
|
|
|
Pests and Diseases
|
|
|
|
|
|
|
|
|
|
|
|
Conversion Processes
|
|
|
|
|
|
Communication and Facilitation
|
|
|
|
|
|
Pests and Diseases
| Project Title | Evaluation of potential for chitosan to enhance plant defence |
| RIRDC Project No.: | SAG-4A |
| Start Date: | 11-Nov-02 |
| Finish Date: | 30-Aug-04 |
| Researcher: | Dr Rachel Walker |
| Organisation: | Serve-Ag
Pty Ltd
PO Box 690 DEVONPORT TAS 7310 |
| Phone: | 03 6423 2044 |
| Fax: | 03 6423 4876 |
| Email: | mtrebilco@serve-ag.com.au |
| Objectives |
· Recommendations on whether chitosan should be used along, or in combination with reduced applications of copper and conventional pesticides. · RIRDC report on the efficacy of chitosan against specific vegetable diseases, and information about compatibility with organic and IPM/conversion practises. · Initiation of product development work for a natural polymer that has potential for use in organic agriculture. This will be valuable if product registration (and organic certification) proceeds. · A better understanding of plant morphological and physiological responses to chitosan. |
| Background | The
term ‘plant defence booster’ applies to a group of compounds which act
by triggering various physiological and morphological responses within
the plant that help to stimulate natural defence mechanisms. The practical
significance of plant defence boosters is that they can help to reduce
the amount of crop protection chemicals applied to crops.
Chitosan is a plant defence booster derived from deactylation of chitin. Chitin is readily available from shellfish waste from food processing. Agricultural applications of chitosan are for stimulation of plant defence. The chitosan molecule triggers a defence response within the plant, leading to the formation of physical and chemical barriers against invading pathogens. |
| Research | Screening
trials were conducted in tomatoes, peas, carrots, beetroot, lettuce, snow
peas, cucumber and capsicums. Replicated field and pot trials were conducted,
and intensive yield and quality assessments were made. In this project,
trial results were most promising in tomatoes. Aminogro® chitosan resulted
in yield increases of nearly 20% in two out of three tomato trials. In
all tomato trials, chitosan applications resulted in a significant improvement
in powdery mildew disease control.
Plant physiological studies were limited because of difficulties with enzyme activity methods. No relationships between chitosan application and stimulation of chitinase enzyme activity was identified. Results from the literature indicate variability in detection of plant defence responses following application of plant defence boosters. It is recommended that the most conclusive results about plant defence activation would be achieved with molecular studies, although this would be very expensive. |
| Outcomes & Implications | Trial results and recent publications in international literature indicate Solanaceae plants may respond well to plant defence booster products. Screening of plant defence booster products in potatoes is recommended for future trial work. Solanaceae crops are significant vegetable crops in Australia, and there is a potentially large target market. Growers would have considerably more confidence in chitosan as a crop protection input if it was registered with the Australia Pesticides and Veterinary Medicines Authority (APVMA). A checklist of requirements for registration of chitosan with APVMA is included in the report. |
| Publications |
·2 Presentation to Greenhouse Growers of Tasmania, August 2003 ·3 Presentation to Organic Research Seminar, Burnie, November 2003 ·4 Article in Soilless – Journal of Australian Hydroponics and Greenhouse Association, July 2003 ·5 Grower reports and regular verbal updates provided to growers and regional agronomists · Article in Research for organic growers - update from Serve-Ag Research, October 2003. |
| Project Title | Managing high input farming systems to commercially viable organic systems |
| RIRDC Project No.: | RFR-1A |
| Researcher: | Mr Michael Blakeney |
| Organisation: | Rimfire
Resources Pty Ltd
Ground Floor 50 Leichardt Street BRISBANE QLD 4000 |
| Phone: | (07) 3831 7966 |
| Fax: | (07) 3831 7044 |
| Email: | mblekeney@rimfireresources.com.au |
| Objectives | The development of a management and decision support system to enable producers to adopt progressive and programmed organic management by identifying and managing impediments to the adoption of organic systems. |
| Background | It became noticeable to the researcher that while the idea of organic systems was well received by commercial producers, there are perceived impediments and gaps in accessible knowledge and management techniques to implementing viable organic production on a large commercial scale. A support tool to address these gaps may assist producers assessing the potential of converting to a certified organic system. |
| Research | The researchers worked with producers and certifiers to develop and test management models that may allow the impediments to organic conversion to be overcome. A flow chart highlighting the critical decisions in the conversion process was developed. This framework was then used to develop a pilot self-test diagnostic that may be used by producers to consider the changes involved in a successful conversion to certified organic production. This was tested with producers and with certifiers to ensure it was appropriate. |
| Outcomes | This project assisted in identifying and managing impediments to the adoption of organic systems. It provides a viable methodology to support producers intending to convert to organic systems and as a result may increase the number and scale of certified organic producers. |
| Implications | The project shows that producers need decision support tools when considering a change to certified organic production systems. By removing this impediment more producers will consider the option of certified organic production. There is a need to further develop the pilot tool into a fully interactive self-test diagnostic that may assist producers in the conversion process. |
| Publications | CD
containing pilot self-test diagnostic, User-friendly report of conversion
process decisions.
RIRDC publication to be advised. |
Communication and Facilitation
| Project Title | Equivalency of imported organic product |
| RIRDC Project No.: | UG-8A |
| Researcher: | Prof David Burch & Dr Kristen Lyons |
| Organisation: | Griffith
University
NATHAN QLD 4111 |
| Phone: | (07) 3875 7223 |
| Fax: | (07) 3875 7656 |
| Email: | kristen.lyons@griffith.edu.au |
| Objectives |
· Publication of a report documenting comparison of standards and impacts for industry stakeholders · Development of presentation materials for use at conferences and industry meetings · Publication of findings in relevant industry and academic journals |
| Background | With the growth in demand for organic products both domestically and from international sources, has come the challenge to ensure that industry players are able to effectively and efficiently navigate the multiple regulatory arrangements that pertain to organic standards and related regulations. There are differing international standards for organic production, as well as differing protocol by which third party certification organisations operate. The (Australian) National Standard for Organic and Biodynamic Produce (National Standard) specifies the need to ensure that imported product complies with the requirements of the National Standard. |
| Research | This research will pull together all relevant regulations and standards from around the world that have the potential to impact on importers of product into Australia, and in turn those wishing to use such product in multi-ingredient products for export. A comparison stencil will be established which will enable the cross checking of different regulations and standards to enable value adders and marketers to make judgements on potential equivalency of regulatory arrangements, which in turn may dictate the ability to either source or sell such product as complying with the National Standard. |
| Outcomes | The outcomes are expected in late 2004 and will be made available to whole of industry as well as via presentations and publications. The outcome will be a cross comparison tool which may be used by industry players to check the compliance and/or equivalence of differing regulations from around the world with those of Australia, and vice versa. |
| Implications | Harmony and simplicity of the application and understanding of regulations and certification by industry operators are a hidden but vital element in ensuring ongoing solid development of the organic industry in Australia. This research will assist in ensuring that such regulations are as transparent as possible while also enabling operators to make judicious product and sourcing choices to bolster their business chances of end product success and their ongoing ability to source organic products in compliance with the National Standard and related international regulations. |
| Publications | RIRDC publication to be advised. |
|
|
|||||
|
No |
|
|
|
|
|
System Design and Environmental Sustainability
|
|
|
|
|
|
Soils
|
|
|
|
|
|
|
|
|
|
|
|
Conversion Processes
|
|
|
|
|
|
Supply Chain Management and Intelligence
|
|
|
|
|
|
|
|
|
|
|
|
Communication and Facilitation
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
System Design and Environmental Sustainability
Soils
Conversion Processes
Supply Chain Management
and Intelligence
Communication and Facilitation

Last updated: August 2004
Copyright © RIRDC
http://www.rirdc.gov.au/comp04/glc1.html