Báo cáo thực tập Khoa tiếng Anh thương mại Trường Đại học Ngoại ngữ.doc

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Ministry of Agriculture & Rural Development
CARD Progress Report
008/07VIE
Commercial and High Quality Cultivars of Root
and Tuber Crops for Processing Purpose in the
Northern and Central Vietnam
MS6: THIRD SIX-MONTHLY REPORT
(January – June 2009)
October

Table of Contents
2. Project Abstract ________________________________________________________ 4
3. Executive Summary _____________________________________________________ 4
4. Introduction & Background ______________________________________________ 5
5. Progress January - June 09 _______________________________________________ 7
5.1. Implementation Highlights_________________________________________________ 7
5.2. Smallholder Benefits ______________________________________________________ 8
5.3. Capacity Building ________________________________________________________ 8
5.4. Publicity ________________________________________________________________ 9
5.5. Project Management______________________________________________________ 9
6. Report on Cross-Cutting Issues ____________________________________________ 9
6.1. Environment ____________________________________________________________ 9
6.2. Gender and Social Issues __________________________________________________ 9
7. Implementation & Sustainability Issues ____________________________________ 10
7.1. Issues and Constraints ___________________________________________________ 10
7.2. Options ________________________________________________________________ 10
7.3. Sustainability ___________________________________________________________ 10
8. Next Critical Steps _____________________________________________________ 10
9. Conclusion ___________________________________________________________ 10
LC 21 January 2010 2

1. Institute Information
Project Name Commercial and High Quality Cultivars of Root and
Tuber Crops for Processing Purpose in the Northern
and Central Vietnam
Vietnamese Institution Food Crops Research Institute
Vietnamese Project Team Leader A/Prof. Dr. Nguyen Van Tuat
Australian Organisation Faculty of Agriculture, Food and Natural Resources,
University of Sydney
Australian Personnel Prof. Les Copeland
Date commenced 02/2008
Completion date (original) 12/2009
Completion date (revised) 02/2010
Reporting period Third six months
Contact Officer(s)
In Australia: Team Leader
Name: Prof. Les Copeland Telephone: +61 2 9036 7047
Position: Professor Fax: + 61 2 9351 2945
Organisation Faculty of Agriculture, Food and Email: l.copeland@usyd.edu.au
Natural Resources,
In Australia: Administrative contact
Name: Kate Rudd Telephone: 61 2 9351 8800
Position: Adm. Assistant Fax: 61 2 9351 8875
Organisation Plant Breeding Institute, Email: kate@camden.usyd.edu.au
Faculty of Agriculture, Food
and Natural Resources,
In Vietnam
Name: A/Prof. Dr. Nguyen Van Tuat Telephone: 0320 716395
Position: Director Fax: 0320 716385
Organisation Food Crops Research Institute Email: vantuat55@vnn.vn

2. Project Abstract
The adoption by farmers of improved sweetpotato1
cultivars with good potential
commercial quality and improving cultivation and postharvest practices are important ways
to enhance productivity and quality of agricultural products in several provinces in northern
and central Vietnam. In the areas selected for the project, there has been little improvement
of cultivars, farmers retain cuttings from inferior varieties from previous seasons, and
cultivation practices, postharvest and processing treatments and value-adding technology
have undergone little development. Consequently, quality of sweetpotato planting material
is poor, yield is low, the price and value are not competitive, and economic return is limited.
This project will select two or three improved sweetpotato cultivars developed by FCRI,
which are suitable for cultivation in the provinces concerned and have high quality for
commercial processing purposes. Through field trials and workshops for scientists,
extension officers and farmers, the project will encourage adoption of improved cultivars
and planting materials, suitable cultivation techniques and postharvest technology for these
regions, and thereby provide farmers with options for value adding from root and tuber
crops. The project benefits will come from improving current cultivars and practices for
growing sweetpotato, rather than from increasing the number of farmers who grow
sweetpotato, which is largely controlled at provincial and commune levels.
3. Executive Summary
The objectives of this project are to improve sweetpotato production in Thanh Hoa, Bac
Giang and Quang Tri provinces in northern and central Vietnam. These objectives will be
achieved through encouraging adoption of improved cultivars and planting materials, and
demonstrating suitable cultivation techniques and postharvest technology through field trials
and workshops for scientists, extension officers and farmers. The project benefits will come
from improving current cultivars and practices for growing sweetpotato, rather than from
increasing the number of farmers who grow sweetpotato, and by providing farmers with
greater options for value adding from root and tuber crops.
Since the project commenced in February 2008, the following progress has been achieved.
• A baseline survey was designed and implemented to collect data in the three provinces
on current cultivars of sweetpotato grown, farmer practices (including cultivars,
cultivation practices, planting and harvest times, inputs), yields, and uses of
sweetpotatoes. The output from the survey was submitted as Milestone 2.
• Three field sites were chosen in Bac Giang, Thanh Hoa and Quang Tri Provinces and
field trials of sweetpotato varieties from the FCRI were grown in the Winter (Bac Giang
and Thanh Hoa) and Spring (Quang Tri) seasons. The trials wetre designed and analysed
in collaboration with the Australian collaborating partners. After analysing the data, two
or three varieties have been selected for further evaluation in trials to be grown in 2009.
• A review of the print and electronic literature on sweetpotato was completed.
• A method for extracting high quality starch from sweetpotatoes has been developed
at FCRI.
• Several training workshops have been held
1
Use of sweetpotato is in accordance with terminology recommended by CIP

Workshop Presenter Audience and approx
numbers
Measuring quality in food products, July 08, FCRI Les Copeland Scientists, Extension
officers (30)
New varieties for sweetpotato production, Sep 08, Bac Les Copeland, Extension Officers,
Giang Province Truong Cong farmers (50)
Tuyen
New varieties for sweetpotato production, Sep 08, Les Copeland, Extension Officers,
Thanh Hoa Province, Truong Cong farmers (50)
Tuyen
Plant breeding for crop improvement; Molecular plant Les Copeland Scientists and
breeding; Sweet potato in cropping systems; Plant Peter Sharp Extension officers (30)
breeding and molecular techniques for improving Richard
sweet potato; Quality of agricultural products: sweet Trethowan
potato; Breeding strategies; New molecular techniques
in plant breeding; Research management, Oct 08,
FCRI,
Theory and practice of enzyme analyses of sweet Les Copeland Scientists (15)
potato roots and products, Feb 09, FCRI,
Molecular marker and selection technologies for plant Richard Scientists and
breeding, Apr 09, Uni of Sydney, Trethowan Extension Officers (5)
• Several collaborative exchange visits have been made
Visit
Feb 2008 Les Copeland, Peter Sharp to Inspect field sites, training workshops
VN
Jul 2008 Les Copeland to VN Inspect field sites, training workshops
September 2008 Les Copeland to VN Inspect field sites, training workshops
October 2008 Les Copeland, Peter Sharp, Inspect field trials, training workshops
Richard Trethowan to VN
February 2009 Les Copeland to VN Training workshop
April 2009 Five scientists and Ext Officers Study tour of Australian sweetpotato
to Aust production
This progress report describes activities that were conducted between January and June
2009, including:
• the training workshop in theory and methods of laboratory analysis for quality of
sweetpotatoes, conducted at FCRI by Les Copeland in February 2009
• the Australian study tour by scientists and extension officers from Vietnam (April
2009)
• completion and analysis of sweetpotato field trials in Bac Giang, Thanh Hoa and
Quang Tri provinces, and selection of varieties for further development (June 2009).
4. Introduction & Background
The area under sweetpotato in Vietnam annually is about 200,000-400,000 ha, with an
average yield of 8 tonnes per ha, providing a potentially large amount of material for
processing. Sweetpotato can be grown well in various locations in northern and central VN,

especially in regions where farmer income is low. In addition to its usefulness as a food for
humans, and as an improver of soil fertility, texture and structure, sweetpotato has high
potential for value adding including use of the unharvested parts as a source of feed for
animals. Using this crop in rotations can reduce the risk of major pests and diseases in other
crops like rice and vegetables, thereby better protecting the agricultural environment. There
is a market for products from root crops such as sweetpotato, for example flour and starch
as a raw material for industry in the manufacture of foods, confectionery, pharmaceuticals,
paper and textiles. The demand for starch for industry in VN annually is about one million
tons, much of which is imported. The lack of good cultivars and relevant technology for
cultivation and processing of sweetpotato means that this crop is not achieving its great
potential for contributing to increasing income and providing socioeconomic benefits for
farmers in poorer regions. At FCRI, several cultivars, such as sweetpotato No.8, K4, KB1,
KL5, K51, VD1 and CN, have been identified good cultivars, and characterized for their
agronomic and adaptive traits, resistance to key insect pests and diseases, and nutrient
requirements. However, these cultivars have not been evaluated for yield and dry matter
production and performance in processing. The central region and some northern provinces
of Vietnam have suitable growing seasons for sweetpotato crops but their role as part of a
sustainable cropping system that increases farmer income needs to be investigated.
Project Objectives
1. Conduct a baseline study in three provinces of Northern and Central of Vietnam on
current farmer practices, including cultivars, cultivation practices, planting and harvest
times, inputs, yields, uses of sweetpotatoes and derived products, etc., so that the
potential impact of project can be estimated. Methods used to encourage farmers to
adopt new cultivars and technology will also be reviewed to further enhance the
likelihood of the impact of project.
2. Choose a small number of sweetpotato cultivars (no more than 2 or 3) from those
designated by FCRI as potentially suitable for cultivating in northern and central
Vietnam and conduct field trials in two seasons in selected locations to evaluate these
cultivars according to yield and dry matter content for value-adding purposes
3. As part of an initial scoping stage of the project, we will seek to obtain an overview of
quality testing and processing technology (for example production of flour and starch
for food processing) used for sweetpotatoes by the laboratories and companies who will
participate in the project. Based on existing methods and available capacity amongst the
VN partners, select, refine and validate protocols for quality testing of sweetpotatoes
and derived products. The potential for interactions in the project from QDPI and the
International Potato Centre will be explored at this stage.
4. Examine methods that are used by small-holder farmers for fermenting leaves and stems
of sweetpotatoes into a silage-type product for animal feeding, and explore how they
may be adapted in central and northern VN.
5. With the assistance of the Australian partners, improve the scientific knowledge of
Vietnamese researchers and extension workers in modern techniques for plant
improvement, storage and food processing technology, analysis of food quality
6. Conduct field days at experimental sites to improve knowledge and skills of farmers for
cultivation of sweetpotato as part of a sustainable farming system.
7. Produce extension materials (pamphlets, CDs, websites, etc.) for extension workers and
farmers.

Project benefits
Project benefits are expected from improving cultivars and cultivation and postharvest
practices, and convincing farmers to use better planting materials than retaining cuttings
from inferior cultivars grown in previous seasons, rather than from increasing the number of
farmers who grow sweetpotato, which is controlled at provincial and commune levels.
Making farmers more aware of the range of options provided by growing sweetpotatoes will
be a key factor in achieving these benefits.
Benefits to farmers from the project will be increased sweetpotato production through
adopting better cultivars developed by FCRI along with improved cultivation techniques for
planting density, bed dimensions and spacing of rows, fertiliser and water application, crop
care, pest management, and assessing quality of produce. In this way, it should be possible
to increase yield of sweetpotato tubers from the current value of about 8-10 tonne/ha, which
is low compared to the global average of 14-15 tonne/ha, by about 30-40%.
There is demand for sweetpotato roots in households and for commercial processing and
export purposes. Roots may be sliced and dried in the sun for 2-3 days for use as snacks or
for making flour for use in cakes or other food dishes. Dried sweetpotato slices can be
packaged for marketing or commercial production of sweetpotato crisps, flour and starch.
The tubers and green parts are used as animal feed, either after simply cutting and drying, or
after making silage by drying harvested material to about 25% moisture, adding salt and
other agricultural by- products (for example, rice bran, chicken manure, cassava tops) and
storing in plastic bags for 3-6 months.
The availability of a good supply of high quality sweetpotato tubers is likely to stimulate
interest from companies. Much of the commercial starch manufactured in Vietnam is
produced from cassava, which has environmental problems and results in waste that is
difficult to process. Sweetpotato roots are a good source of starch; and processing facilities
for starch production from cassava starch may be suitable for use with sweetpotato tubers.
Sweetpotato roots may also be fermented of into wine and sake (in Japan).
Growing sweetpotatoes will provide farmers with the options of a versatile crop. It can be
used as a cover crop on dry land with sandy soils, for intercropping with other food crops,
or for successful weed control, as occurs in central Vietnam. Its uses vary from domestic
use, as a cash crop, a good source of animal feed, and for commercial contracts, for
production of foods and starch.
5. Progress January - June 09
5.1. Implementation Highlights
The implementation highlights in the period January – June 2009 were
¾ a training workshop in theory and methods of laboratory analysis for quality
of sweetpotatoes, conducted at FCRI by Les Copeland in February 2009
¾ an Australian study tour by scientists and extension officers from Vietnam
(April 2009)

¾ completion and analysis of sweetpotato field trials for evaluation and selection
of new varieties in Bac Giang, Thanh Hoa and Quang Tri provinces, and
selection of varieties for further field trials in the 2009/10 season (June 2009).
Details of activities a. and b. are given in Appendices A and B, respectively, at the end
of this document. The sweetpotato field trial is described in the separate Technical
Report, which is one of the project outputs.
A website hosted by VAAS was established, and an item submitted to the CARD
Newsletter.
The project suffered a significant setback in May 2009 with the tragic death of one of the
key members of the Vietnamese team, Dr Pham Quam Duy. Dr Duy had made considerable
contributions to the project in the scientific program and technical language translations.
5.2. Smallholder Benefits
Benefits to farmers from the project will be increased sweetpotato production through
adopting better cultivars developed by FCRI along with improved cultivation techniques for
planting density, bed dimensions and spacing of rows, fertiliser and water application, crop
care, pest management, and assessing quality of produce. In this way, it should be possible
to increase yield of sweetpotato tubers from the current value of about 8-10 tonne/ha, which
is low compared to the global average of 14-15 tonne/ha, by about 30-40%.
Growing sweetpotatoes will provide farmers with the options of a versatile crop. It can be
used as a cover crop on dry land with sandy soils, for intercropping with other food crops,
or for successful weed control, as occurs in central Vietnam. Its uses vary from domestic
use, as a cash crop and a good source of animal feed, to commercial contracts, for
production of foods and starch.
5.3. Capacity Building
Training courses will be designed and conducted in VN for selected scientists and extension
officers in Thanh Hoa, Bac Giang and Quang Tri provinces. These courses will help to
improve the research and management capacity of these organizations. Two training courses
will be held, one in 2008 and another in 2009, with each course for up to 30 trainees
selected on their commitment, prior learning and local knowledge. The Australian partners
will have responsibility for organizing and overseeing the training courses. The Vietnamese
partners will be responsible for registration and reception, arranging the accommodation for
participators, preparing and presenting about the extension activities, the appropriate
contents of research and dissemination in each region. A small number of scientists will be
selected to participate in a study tour in Australia to gain new and different perspectives on
production, processing, and natural resource management. The training materials will be
made available electronically and in print.
Farmers who are involved in the project will have the opportunity to advise on selection of
cultivars based on their experiences and local knowledge. Then, they will form the interest
group of the project and participate in some of the project activities such as evaluation of
sweetpotato cultivars in field experiments, quality checking, processing and cooking some

test products, to engage in “learning by doing”. Farmers who participated in an earlier IPM
course (not part of this project), or who are members of crop production cooperatives such
as rice production cooperatives, will be encouraged to join the project because of their
demonstrated willingness to be innovative.
5.4. Publicity
Dissemination of research outputs and outcomes from the project will be essential for
encouraging for farmers to grow root and tuber crops. Demonstration of demand for high
quality products and their availability in the markets, will push farmer to pursue better field
management practices, including planting improved varieties with high yield and better
quality and quality assurance. Farmers can learn field technologies through various
activities such as farmer training, field day meetings, farmer field school (FFS), training of
trainers (TOT), farmer participatory research, on-farm research, etc. The use of media such
as agricultural journals, local newspapers and magazines, national and local broadcasting
stations will advertise and publicise the project achievements, so that other provinces or
localities can learn about the project.
5.5. Project Management
The Australian partners will oversight the design of the experiments and field trials, data
analysis and interpretation, and preparation of reports. Monitoring and evaluation are
essential activities of project that will be performed on an ongoing basis as an essential part
of the project management, not only to meet reporting requirements, but also to review
action plans for the project.
6. Report on Cross-Cutting Issues
6.1. Environment
Sweetpotato is a crop that needs relatively few chemical inputs. Therefore, best cultivation
practice of sweetpotatoes can contribute to the protection of environment, by reducing
contamination from excessive use of pesticides and fertilizers, thus increasing benefit and
income for farmers by saving production costs. Nevertheless, fungal and viral diseases can
significantly reduce yield of both the green tops and roots. The development of more
resistant cultivars will further enhance the environmental sustainability of this crop.
6.2. Gender and Social Issues
Both the above ground biomass and root are used in Vietnam. The green tops provide feed
for animals and the roots can be fed to animals or consumed by humans. As animals are an
important source of income for many families, genetically improving the overall biomass of
sweetpotato will have a direct impact on livelihoods.

7. Implementation & Sustainability Issues
7.1. Issues and Constraints
There is significant genetic diversity among sweetpotato germplasm in Vietnam with
varieties clonally propagated from selected plants using tip or stem cuttings. Little or no
directed crossing is conducted. However, a directed population improvement approach
could significantly improve the adaptation and productivity of this species.
7.2. Options
Sweetpotato is an open pollinated hexaploid (2n = 6X = 90) and the opportunity exists to
breed better varieties using a polycross approach. Lines representing genetic variability for
key traits, sourced from diverse backgrounds (determined using DNA fingerprinting) could
be combined in this way and advanced using mass selection techniques.
7.3. Sustainability
In the USA there is concern that little of the existing genetic diversity in sweetpotato is
represented in the cultivars grown. It would be important in this project to ensure that
diversity for disease resistance is maintained among the different sweetpotato growing
regions. These will avoid genetic vulnerability to yield limiting pests and diseases.
8. Next Critical Steps
Outline of plans for next six months
• Oct 09 Visit to Vietnam by Les Copeland, Richard Trethowan and Peter Sharp for field
work, evaluation of new cultivars; presentation of workshop on experimental design,
data analysis, writing proposals, reports and papers; revisit quality testing (as requested
by VN partners); planning for final report
• Nov 09Planting of second field trials in Bac Giang and Thanh Hoa Provinces
• Nov/Dec 09 Assessment of competency improvements – scientists, extension officers,
farmers
• Dec 09Validation of project against baseline study - changes in farmer practices in
relation to baseline study
• Jan 09 Planting of second field trial in Quang Tri Province
• Jan/Feb 09 Visit Vietnam by les Copeland for drafting of final report
• Feb 09Submit Final Report
9. Conclusion
An assessment of the impact on stakeholders/beneficiaries is expected to be included in the
Project Completion Report.

Workshop on “Enzyme analyses of sweet potato roots and derived
products” held at FCRI from 17-19 February 2009
Objectives: To demonstrate the theory and practice of enzyme analyses of food products.
Enzyme analyses are used almost universally in the food industry as the method of choice
because of their convenience, specificity and general lack of interference from other
components in the material being analysed. The availability of commercial kits for the
assays makes them simple to perform, once the basic theory is understood. The objective
of the workshop was to introduce the scientists at FRCI to enzyme kits. There were about
15 participants in the workshop, most of who were the FCRI laboratory scientists. The kits
used were from Megazyme International, which is the world leader in these products.
Lectures
- Theory of biochemical analysis
- Use of enzyme for analyses;
- Analysis of mono-, oligo- and polysaccharides
- Comparison of analytical methods
- Reporting of results
The lecture material is provided in a separate attachment.
Practical
- Preparation of reagents
- Use of analytical kits
- Analyses of sweet potato: moisture content; total starch; sugars (maltose,
sucrose, glucose, fructose); alpha-amylase activity in sweet potato
- Calculation and interpretation of results
Comments
The scientists who participated in the workshop demonstrated good practical skills and
appeared to learn the new techniques quite quickly. However, there is a need for follow up
to ensure that the skills are applied confidently and become standard practice in the
laboratory. While the laboratory has a reasonable stock of major equipment, it lacks the
basic consumables (plastic labware, minor items of equipment, reagent grade chemicals)
needed to maintain a good quality analysis laboratory.
11

Appendix B
AusAID CARD 008/07VIE Australian Study Tour, 12-19 April 2009
A delegation of five senior scientists representing the Food Crops Research Institute of Vietnam
participated in an Australian study tour from 12-19 April 2009. The members of the FCRI delegation
were Drs Nguyen Van Tuat and Pham Quang Duy (senior scientists) and Drs Nguyen Dat Thoai,
Pham Van Thuan, and Dao Xuan Thang (extension officers/scientists). Professors Les Copeland and
Peter Sharp of the University of Sydney accompanied the group during the trip. The activities and
enterprises visited during the tour were as follows.
Sunday 12 April: Visit to the RAS Easter Show
The delegation visited the Show where they held discussions with exhibitors, and inspected
livestock and the district displays of produce. They commented that the visit provide a good
introduction to the Australian agricultural scene, and an opportunity to interact with producers.
Monday 13 April: Tour of the University of Sydney Plant Breeding Institute and an overview
of peri-urban vegetable production in the Camden region
A tour of the laboratory, field and glasshouse facilities of the Plant Breeding Institute at
Cobbitty, including a demonstration trial of several Australian varieties of sweetpotato, was
followed by an inspection of vegetable production in the Camden district. The group visited a
major supermarket to see how fresh produce was marketed in Australia.
Tuesday 14 April: DArT P/L, Canberra, and NSW Department of Primary Industries
Elizabeth Macarthur Agricultural Institute, Menangle
Diversity Array Technologies (DArT) P/L is a private enterprise that specialises in fee -for-
service genotyping and genetic map construction of agricultural and native plant species. The
company takes a novel approach based on whole genome analyses, rather than using specific
molecular markers. Originally focused on cereals, DArT has diversified in recent years and has
an international portfolio of projects that cover over 50 plant species, including sweetpotato
lines accessed from CIP. The delegation heard presentations from Andrej Killian and Eric
Huttner, Director and General Manager, respectively, and were shown the company operations
by Peter Wenzl, Principal Scientist. The group was impressed by the DArT approach to
genotyping crop species and observed that it would be valuable for the improvement of crop
and indigenous vegetable species of Vietnam. There was considerable interest in following up
the visit and developing collaborations.
At NSW Department of Primary Industries Elizabeth Macarthur Agricultural Institute the
group was met by Nerida Donovan, Citrus Pathologist. She presented an overview of the
Institute’s activities in service, extension, research, surveillance, quarantine and certification of
disease free planting materials for farmers.
Wednesday 15 April: Plant Breeding Institute, Cobbitty
The day was spent at the PBI in workshops and discussions on topics related to the project.
Richard Trethowan (Professor of Plant Breeding, University of Sydney) conducted a workshop
on “Molecular marker and selection technologies for plant breeding”, including case studies
from international projects on cereal breeding for drought tolerance. Graham Brown, of the
PBI and an affiliated company Nuflora, and Paul Hogan of JatOil (a company with a presence
in Vietnam) discussed their interests in commercial cultivation of Jatropha as a feedstock for
biodiesel production, and in floriculture and horticulture. They and the tour participants raised
possibilities for collaborative projects with organizations in Vietnam. Peter Sharp presented
two workshops on “Tools for analysis of genetic diversity in sweetpotato”, and “Map
construction and marker assisted selection”. Les Copeland and Peter Sharp gave a half-way
status report on the project and considered future directions (see Attachment 1).
12

Thursday 16 April: Speedy Seedlings, Leppington, and Flora International, Leppington
The delegation visited Speedy Seedlings, an enterprise that has growing at any one time
several million seedlings of about 50 vegetable species for sale to horticultural producers and
market gardeners. The proprietor, Dr John Vella gave an excellent presentation and tour of the
enterprise, discussing the simple infrastructure, and nutrition irrigation and disease control
practices he has developed to maintain this high throughput operation. The group was
impressed by the scale yet simplicity of the enterprise, which does not rely on expensive
infrastructure. The delegation also visited a large -scale floriculture production and marketing
enterprise, Flora International, which produces and markets predominantly roses produced in
temperature controlled glasshouses.
Friday 17 April QDPI Research Station and sweetpotato farming, Bundaberg
Russell McCrystal, Research Horticulturalist, Queensland Department of Primary Industries in
Bundaberg, gave an excellent presentation on sweetpotato production in the Bundaberg
district, which accounts for about 90% of the 40,000 tonnes produced annually in Australia. Of
particular note was the Pathogen Testing (PT) program of QDPI, which makes available virus-
free planting materials for farmers to buy annually or biannually. The PT program is
considered to be the main reason for a doubling of yield of sweetpotato in the district to about
50 tonnes/ha. The decline in yield in many parts of the world is considered to be due to
multiple virus and other pathogen infections. Jerry Lovatt, an extension officer of QDPI,
described how a modified PT program to produce virus-free material locally is being
introduced into PNG with support from ACIAR, and is achieving increases in sweetpotato
yields. Subsequently, several sweetpotato enterprises around Bundaberg were visited to learn
about local farming practices, land and water management, planting techniques, harvesting,
washing and packing, pest management, and the supply chain from producers to marketing.
During a debriefing session held at the conclusion of the tour, the Vietnamese delegation indicated
that they had been particularly impressed by:
- the extent to which technology and good land management systems were adopted by growers
- the yield improvement of sweetpotato in the Bundaberg district, which has led to more options
for crop diversification, and the opportunity for fallowing and better land use
- the close interactions between growers, researchers and industry, and the role played by
researcher/extension officers (QDPI’s Russell McCrystal was an excellent example)
- the benefits of providing farmers with clean sweetpotato planting materials every year, and
of diversifying the sweetpotato germplasm used.
The value of adopting scientific knowledge that underpins agricultural production was clearly noted.
Introducing PT technology into Vietnam for providing clean planting materials was seen as a high
priority. This could be achieved by sending a scientist from FCRI for training in PT methods at
QDPI, Gatton and the PBI. The possibility of building on the QDPI/ACIAR project in PNG will be
explored, as will the possibility of sending another scientist from FCRI for training in the University
of Sydney in quality analysis. Other priorities were the use of DArT technology in plant
improvement programs, making industry more aware of ongoing research and fostering closer
relationships between FCRI and agricultural industries. A number of possibilities were identified for
future bilateral research collaborations including: alternative horticulture crops, floriculture,
genotyping of VN varieties of rice, medicinal and indigenous vegetable plants. Possible future
contacts for collaboration are DArT, the PBI, Speedy Seedlings, and Graham Brown.
The delegation expressed the view that the study tour provided good opportunity to meet many
people and learn about a range of enterprises from seedling production to flowers to biotechnology.
The arrangements for travel, accommodation and food were considered to be very good.
13

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