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Agri-Food Research & Development Initiative Newsletter
February 2008


What’s ARDI?

ARDI is a research and development granting program of Agriculture and Agri-Food Canada and Manitoba Agriculture, Food and Rural Initiatives. It is funded through the Agricultural Policy Framework, a federal-provincial-territorial action plan for agriculture.



 

PhiBer Commercialization Success

Starter Cultures and Antibiotic Resistance

Dr. Rick Holley at the University of Manitoba is using an ARDI grant to investigate whether starter cultures used in food manufacturing have antibiotic resistance. Starter cultures are important in cheese, sourdough bread, sauerkraut, pickle and sausage manufacturing. "Antibiotic resistance is problematic in human clinical medicine," notes Holley. "Do starter culture bacteria serve as reservoirs for antibiotic resistance? Maybe there's no risk, for these organisms to serve as reservoirs, but if there is, we have to take steps to ensure we are not unwittingly making things worse."

Pea Bar Travels

A Manitoba-made snack bar pea barcontaining peas is being shown at conferences around the world. Best Cooking Pulses developed the pea bar at the Food Development Centre in Portage la Prairie with the help of ARDI funding. The bar has been shown in Honolulu, San Francisco and most recently, in Toronto at the Pulse Food Symposium.

ARDI announces support for new projects at U of M

In December, ARDI announced eight grants worth more than half-a-million dollars. Research questions relate to human health, nutrition, food, water, soil and plant health. "You can easily see the links between agriculture, agri-food and health," said ARDI Chair David Gislason at a news conference held in the Atrium of the U of M's Agriculture Building. ARDI research "is all about enhancing the viability of agriculture in Manitoba, but clearly, it's also about enhancing the health of Manitoba's citizens."

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Dr. Michael Trevan, Dean of the Faculty of Agricultural and Food Sciences, speaks at ARDI news conference in December 2007.

Ag Days Winner

Charlie Main, of Virden, won ARDI's contest to identify the berry pictured in Brandon's Ag Days program. We sent Charlie a basket full of Manitoba food products made by companies that have received ARDI funding. Products included John Russell Honey, Miinan Wild Blueberry Salad Dressing, Prairie Lane Saskatoon Topping and Northern Forest Diversification Wild Mint Tea.

Council Meetings

ARDI Council meets twice in March to review funding applications submitted by the Feb. 1 deadline.

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Efficient Irrigation: Plants Draw their own Water as Needed

ranjan sri ranjan

Ranjan Sri Ranjan explains how water is continuously available to pepper plants through tubes.

If you tend to over-water or under-water your plants, you'll love the self-watering system being developed at the University of Manitoba.

<pepper plants>The system allows plant roots to draw water directly through a capillary-irrigation system made of porous material. If you look closely at the photo to the left, you can see that the soil in the plastic cups is actually resting on a membrane above a layer of water. Pressure prevents water from leaking out freely under gravity. Also visible in the photo are small, clear tubes running out from the bottom of the cups. These tubes ensure water is always available for the plant to draw into the soil. The micro-pores on the membrane allow water to pass through only when the plant's roots generate a greater negative pressure against the membrane. Dr. Ranjan Sri Ranjan with the Department of Biosystems Engineering says it's negative pressure that allows the plants in your house or yard to move water into the roots from the surrounding soil. In Ranjan's experimental greenhouse, negative pressure also draws water through membrane into the root zone.

"The water is constantly available, stored just beneath the plant's root systems, "says Sri Ranjan. "Since the irrigation is entirely controlled by the plant's water needs, different plants with different water needs can be grown side-by-side without drowning each other out."

Even savvy greenhouse operators with drip irrigation systems can save water by allowing the plant to determine its own water needs. That's because traditional drip irrigation systems send a predetermined amount of water to the soil even when the water needs of adjacent plants are different. Over-watering can be avoided with skilled greenhouse staff, but some water may still ultimately be wasted, through evaporation into the air.

Sri Ranjan is currently evaluating the water use efficiency of different greenhouse plants using the capillary-irrigation system. He is also trying to establish optimal root volume for various plants. In conventional irrigation, large root volume is required for temporary storage of water between two irrigation events. In this system, since the plants take up water and nutrients directly from the porous membrane, the root volume need not be as large as in traditional pot-based growth systems, leading to a reduction in volume of potting media. The peppers shown above would normally be grown in much larger pots, meaning that the capillary-irrigation system may free up valuable greenhouse space, potentially without any loss in yield.

Sri Ranjan's research is expected to lead to the development of low-cost, self-watering greenhouse production systems suitable for use by remote northern communities. ARDI and Manitoba Hydro are funding partners in this project.


PhiBer Bale Accumulator a Commercialization Success

rick lussierToday, PhiBer's Bale Accumulator is sold throughout North America. Back in 1999, the accumulator was still just a great idea that needed to be tested.

At the time, the people at the Crystal City, Manitoba office of PhiBer Manufacturing knew they were on to something with their design for a large square bale accumulator. ARDI provided a $50,000 grant to help PhiBer fine tune the design, including changes to the wheels and the electronic control system. The company also needed to come up with a way to adapt to various tractor hydraulic systems. In the years since, PhiBer has continued to refine the features and options of its flagship product.

PhiBer's Business Manager Rick Lussier (pictured with the accumulator at Ag Days in Brandon) says ARDI funding helped the company move forward faster. "The accumulator is still the bread and butter of our business," says Lussier. The accumulator allows producers to group bales into a package that will match both loader capabilities and stacking preferences. PhiBer Big Bale Accumulators are now sold throughout North America through Case New Holland and Krone North America. PhiBer is also mounting accumulators on Hesston/Massey/John Deere/Freeman and the new Taarup balers from Europe.

As PhiBer said nearly ten years ago in a report to ARDI, "Designing and developing prototype equipment is expensive and time consuming, requiring rigorous field-testing, and implementing modifications before achieving a marketable product. PhiBer Manufacturing Inc. is pleased that ARDI supports small rural based manufacturing industries that create employment and enhance community development." PhiBer is now looking outside of North America and into Europe for its next marketing challenge.

ARDI
© ARDI 2008

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