Providing science-based information to serve Hawaii's Farming Community
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September | October | November 2009
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Sustainable & Organic Research &
Outreach News
News from Hawai'i's Researchers and Extension
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Farming for Functionality: Enhancing phytonutrients in vegetables through crop management
Ted Radovich,
University of Hawai'i at Manoa, CTAHR
The flavor, color and human health potential of vegetables have a chemical basis that is influenced by many factors, including genetics and growing environment. This article briefly discusses the influence that management practices such as variety selection, irrigation and fertilization can have on plant compounds that contribute to the health promoting function of fresh vegetables. Glucosinolates, compounds influencing flavor and anti-carcinogenic activity in cabbage family vegetables, are highlighted as an example. Exploiting the effects of genotype and environment on the chemical quality of vegetables has potential to improve marketability and grower profits. However, it will require the continued, cooperative efforts of researchers, industry groups and growers to realize the full potential of “Farming for Functionality.”
READ the full article here
FMI: Dr. Ted Radovich, Email: theodore@hawaii.edu
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Growing Your Business
Linda J. Cox,
University of Hawai'i at Manoa, CTAHR
Get Ready to Retail Your Products
Every company in the marketing channel from the producer to the final consumer should be seen as a customer by the agricultural producer. Whole Foods Market is used as an example to help illustrate how a farmer could develop a marketing strategy to target this retail outlet that specializes in healthy living products.
READ the full article here
FMI: Dr. Linda Cox, Email: lcox@hawaii.edu
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CTAHR Sustainable & Organic Research News
News from our researchers
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Functional Foods: The Crossroads of Nutrition, Food Science and Agriculture
Corilee Watters
University of Hawai'i at Manoa, CTAHR
A Functional Food conference, sponsored by CTAHR, was held a few months ago. “Functional foods” have health promoting qualities in addition to the nutrients they contain. Promoting functional foods is another way to market healthy eating and encourage increased consumption of fruits, vegetables and whole grains.
READ the full article here
FMI: Dr. Corilee Watters, Email: cwatters@hawaii.edu
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The Sweet Smell of Success: The Odorless Piggery
Michael DuPonte
University of Hawai'i at Manoa, CTAHR
The EPA now has more stringent guidelines for livestock operations, which means that the best management practices (BMPs) used in the past are not acceptable any more. Techniques being used in South Korea for swine production could be potential BMPs in the United States. The use of indigenous micro organisms (IMO); natural ventilation and site selection to encourage cooling and drying within the shelter, and a green waste bedding system create a piggery that is not affected by flies, odors and manure handling concerns.
READ the full article here
FMI: Michael DuPonte, Email: mduponte@hawaii.edu
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Changes in soil properties and vegetable growth/quality during the transition toward organic farming in Hawaii
Nguyen V. Hue
University of Hawai'i at Manoa, CTAHR
The tropical, nutrient-poor soils of Hawaii may present a challenge to organic vegetable producers. An experiment done at the Poamoho Experiment station compared a control treatment with no soil nutrients added, a treatment of 500 lb/acre of the chemical fertilizer urea, and two types of compost/chicken manure amendments that provided approximately 300 lb/acre total nitrogen (N). Chinese cabbage (Brassica rapa, Chinensis group) and eggplant (Solanum melongena) were grown sequentially in the four treatments. The treatment with urea promoted better growth in the first crop (cabbage), whereas a good-quality compost, made of grass-clippings/tree trimmings, lime and rock phosphate, gave the best growth in the second crop (eggplant), suggesting N mineralization from organic inputs requires at least three to four months in the field before N became most available to crops.
READ the full article here
FMI: Dr. Nguyen Hue, Email: nvhue@hawaii.edu
For more detailed article
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Pastured Poultry for the Backyard
Matt Stevenson
University of Hawai'i at Manoa, CTAHR
CTAHR publications entitled Pastured Poultry Production (LM-1) and Small-scale Pastured Poultry Grazing System for Egg Production (LM-20) by CTAHR livestock agent Glen Fukumoto provide information on a backyard poultry grazing system that reduces the amount of supplementary feed necessary for consistent production. Pasture based birds are expected to provide higher quality products than birds raised in confinement. A workshop that explains the system has been developed and conducted on Kauai. The workshop will be held again on Kauai and possibly on other islands.
READ the full article here
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Soil solarization and cover cropping as alternatives to soil fumigation for pineapple growers in Hawaii
Koon-Hui Wang
University of Hawai'i at Manoa, CTAHR
Results indicate that sunn hemp cover cropping (SH) and soil solarization (SH+Sol) reduced two third of the weed pressure as compared to untreated plots. Although SH did not suppress nematode pests as efficiently as Telone, it suppressed reniform nematodes below its threshold level prior to crop planting. SH with or without Sol, enhanced soil biodiversity and microbial activities involved in nutrient cycling.
READ the full article here
FMI: Dr. Koon-Hui Wang, Email: koonhui@hawaii.edu
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Fate of Organic Amendments Within and Below the Crop Root Zone.
Ali Fares
University of Hawai'i at Manoa, CTAHR
Organic amendments, i.e., compost, chicken and cow manures, are major sources of macro- (e.g., Nitrogen, Phosphorus, Potassium) and micro-nutrients (e.g., Zinc, Magnesium, Calcium), although the improper
application of organic amendments may impact the environment through nutrient leaching (e.g., Nitrogen) and greenhouse gases emission. During several growing seasons we monitored soil water content, and nutrient availability and leaching within and below the root zone of a sweet corn crop grown on a Wailua soil amended with commercially available organic compost (CP) and chicken manure (CM). Application of organic amendments improved soil water holding capacity and infiltration rates as compared to control treatments. Chicken manure increased the concentration of nutrients within and below the root zone, which resulted in a better performance of the sweet corn. Farmers should avoid excess application of organic amendments and over-irrigation in order to minimize losses of valuable nutrients and substantially reduce groundwater contamination.
READ the full article here
FMI: Dr. Ali Fares, Email: afares@hawaii.edu
For more information about our research, see our monthly CTAHR Research News Magazine.
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CTAHR Publications & Programs
for sustainable and organic production system
Western Extension Marketing Committee (with collaboration from Dr. Stuart Nakamoto, CTAHR)
To purchase a print version, contact Dr. Stuart Nakamoto, snakamo@hawaii.edu.
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FMI/FYI
A number of growers have expressed concern that there is not enough interest by the next generation in farming and that CTAHR students should get "seed to sale" experience as part of their education. In this issue, we are delighted to introduce SOFT, CTAHR's Sustainable and Organic Farm Training Student Organization.
SOFT: The SOFT (Sustainable and Organic Farm Training) club is a student group open to everyone enrolled in the University of Hawaii that aims to teach the basics of growing food sustainably by providing students hands-on experience. The SOFT club relies on the support of CTAHR faculty and staff to assist them in various activities including managing research and garden sites, weekly produce sales, and outreach to a local elementary school.
Agroforestry Net is a nonprofit educational organization focused on advancing information to promote Pacific Island agroforestry and ecological resource management.
Food Safety & Organic Management: Food Safety News
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Western Region Sustainable Agriculture and Education Program (WSARE)
Check out these and other great resources at the WSARE website.
Since 1988, the WSARE program has been supporting agricultural profitability, environmental integrity and community strength through grants that enable cutting-edge research and education to open windows on sustainability across the West, including Hawaii. The goals of WSARE are:
- Promote good stewardship of our natural resources.
- Enhance the quality of life of farmers and ranchers and ensure the viability of rural communities.
- Protect the health and safety of those involved in food and farm systems.
- Promote crop, livestock and enterprise diversification.
- Examine the regional, economic, social and environmental implications of adopting sustainable agriculture practices and systems.
For more information, please see:https://western.sare.org/ or contact Hawaii WSARE coordinator Dr. Ted Radovich at theodore@hawaii.edu.
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This e-publication has been prepared by CTAHR research scientists and extension staff to deliver science-based information about sustainable and organic production systems to serve Hawaii's farming community.
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Mahalo nui loa,
Eric Collier, Education Specialist and Managing Editor
Dr. Linda Cox and Dr. Ted Radovich
Jody Smith, e-Extension Manager
Sustainable and Organic Agriculture Program
Cooperative Extension Service
College of Tropical Agriculture and Human Resources
The University of Hawai‘i is an equal opportunity/affirmative action institution.
Jody Smith | Web Manager | smithjos@hawaii.edu
Copyright ©2013 University of Hawai‘i - College of Tropical Agriculture and Human Resources. Updated 6 January, 2013
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