Category Archives: University of Guelph

Water on app New app to reduce water use for Canada’s ornamental plant sector

Jared Stoochnoff

By Lisa McLean

Guelph – It takes a lot of work – and a lot of water — to grow healthy trees and shrubs for Canada’s ornamental plant sector. The industry, which boasts approximately 3,500 nurseries across Canada, uses an estimated 190 million cubic metres of water every year.

But new research suggests this is two to three times more water than healthy trees need. And soon a new tool will be available to help nursery managers determine when to turn on –and turn off – the hose.

Jared Stoochnoff, a University of Guelph graduate student in the School of Environmental Sciences Controlled Environment Systems Research Facility, is pioneering a new irrigation management strategy designed to reduce water consumption and mitigate the environmental impact of ornamental nursery operations.

“Because many nursery irrigation managers lack reliable ways to quantitatively predict a plant’s actual water requirements, they tend to err on the side of caution and overwater,” Stoochnoff says. “This results in unnecessarily high water and fertilizer run-off that negatively impacts local watersheds.” Continue reading

From waste to wealth: transforming greenhouse waste into energy

Animesh Dutta

By Jane Robinson

Guelph – When Animesh Dutta ponders the problems of the world, he lands on energy security, food security and climate change. The University of Guelph researcher’s latest project holds promise for addressing all three.

As professor and director of the Bio-Renewable Innovation Lab in the School of Engineering, Dutta focuses on taking waste from farms or food processors and finding the best solution to convert it into renewable energy that will maximize the economics.

When he started working on bioenergy, Dutta saw the benefits of creating a renewable source of energy that didn’t interfere with food production.

“The economics don’t seem to be there for using feedstock for bioenergy,” he says. “You have to purchase the raw product and farmers want a price for their biomass crop that is higher than the value of the bioenergy it makes.” Continue reading

A new solution to cleaning wastewater on shrimp farms

By Jeanine Moyer

Guelph – Ontario shrimp farmers could soon be going green – with algae. New research is using algae to naturally clean recirculating saltwater on shrimp farms. Still in the early development stages, the new, highly efficient process of removing nutrients and carbon dioxide from recirculating saltwater is being tested at the University of Guelph.

“It’s not a new idea,” admits Andreas Heyland, lead project researcher and integrative biology professor at the University of Guelph. “But we’ve been able to select highly efficient algae strains, which can be grown on the recirculating water.”

In-land shrimp farming has grown in Ontario in recent years with the demand for local shrimp in closer proximity to the marketplace. As a result, farmers are looking for new ways to manage nutrient build-up in the production system; conventional methods don’t produce much revenue and saltwater can’t be easily disposed in the environment. Continue reading

Finding the right light to grow better plants – on Earth and in space

By Lilian Schaer

Guelph – It’s an unremarkable building from the outside, tucked away on a side street on the University of Guelph campus. What’s inside, though, is most remarkable – and may well be lighting the way for future human life in space, as well as better life here on earth.

Not only are researchers in the Controlled Environment Systems Research Facility working on how to best grow food away from Earth, they’re also experimenting with using light to improve the production of medical marijuana and cancer-fighting tobacco plants, helping nurseries reduce water and fertilizer use on their trees and shrubs, and finding low cost solutions to growing more compact bedding plants.

PhD candidate Dave Hawley is using basil and strawberry plants in experiments designed to find the best LED light combination for use in small, low atmosphere growth chambers that will not only simulate but actually improve upon real sunlight – and resulting in better flavour and ultimately helping feed people on long space journeys. Continue reading

DNA doesn’t lie: new technology authenticates food ingredients

Steven Newmaster

By Jane Robinson

Guelph – Now that scientists can barcode and catalogue the unique DNA sequence of any living being, they’re putting the technology to the test to authenticate food products.

University of Guelph professor Steven Newmaster is helping food manufacturers verify the products they use don’t contain any adulterated ingredients.

University of Guelph scientists invented DNA barcoding in 2003, starting with animals and plants and identifying more than 60,000 plant species to date. Newmaster, the director of the Natural Health Products (NHP) Research Alliance at Guelph, wondered how the catalogued information could be used by the food and NHP industry.

He began by using the previous barcoding work to create new libraries of DNA information for commercial plant species used in agriculture and food. Now, he’s successfully created a new tool to deal with food fraud – the practice of using lower cost substitute ingredients in the food industry – that will soon be installed by food manufacturers for on-site testing.

“With a shrinking food supply and a population headed to nine billion, there is tremendous pressure on the supply chain, and contamination or substitution of ingredients may become more tempting for some companies,” says Newmaster. Continue reading