Agricultural startup BVT bets on bees to protect crops

On a perfect sunny afternoon in late May atOrganics Family Farm in Markham, Ont., David Passafiumeis carefully dotting his newly planted strawberry field with eight man-made bumblebee hives.

The hives are constructed out of lightweight corrugated plastic, and inside each hive is a colony of bees that, over the next few weeks, will work non-stop to help protect his crop from a grey mould called botrytiswhile at the same time keeping his strawberries certified organic. (In order to remain certified, the farmcan't use chemical fungicides.)

Just a few botrytis spores are enough to wipe out an entire field of strawberries if left untreated.

Protective powder

The hives are part of a research study being conducted by Bee Vectoring Technology, or BVT,a startup biotechnology company based in Mississauga, Ont.

They are placed in the field, and as the bumblebees exit the hiveto pollinate flowers, they must walk through a small tray of grey powder that sticks to their legs. When they land on a flower, some of the powder falls off.

The powder is a proprietarycompound produced by BVT thatcontains a fungus thecompany says is safe for humans, animals and the bees. When it's deposited by the bumblebee onto the strawberry plants, it blocks the botrytis fungus that will spoil the fruit.

The upside to using bees to treat plants is that this method uses no water, requires no heavy machinery and delivers the protective compound directly to the fruit with very little waste, says AshishMalik,CEO of BVT.

"It's a very sustainable delivery system," said Malik.

In the field, you can observe just how efficient a bee can be as it moves from flower to flower. A single bumblebee hive of 300 bees can come into contact with approximately 10 million flowers over the bloom period.

Still work to be done

Although the idea of using bees to deliver biological pesticides to plants has been around for about 20 years and agricultural researchers have been running small-scale experiments during that time, BVThas only recently tested it in the fieldin Europe and North America.

In mid-2016, BVT's microbe was approvedby theU.S. Environmental Protection Agency for use in field tests, and it's expected to be approved for general usein early 2018.

But in Canada, the road to full government approval by Health Canadais longer and more demanding. Not only does BVT have to prove its product is safe for bees, people and the environmentit also must prove that it is an effective fungus control and delivery system.

Keeping an eye on all this is Agriculture and Agri-Food Canada. The federal department says it is intrigued by this technology but admits there is still a lot of work to be done.

"In general, the technology is really in its infancy, but it has an enormous potential," said RoselyneLabb,a research scientist at Agriculture andAgri-FoodCanada.

Much of the work now will be focused on finding the right compounds to control the specific pests that target various crops.

Even Malikadmits thattraditional methods of spraying crops will likely still continue, but he says bees will be another useful tool in a farmer's tool kit.

Bees might benefit, too

Like at many tech startups, there is a sense of excitement at BVT.The initial trials the company has conducted have shown positive results. Farmers using BVT'ssystem and researchers at Agriculture and Agri-Food Canadafeel there is merit to the idea, but more testing and refining of the technology is needed before it can be brought to market.

Beyond what's being tested in the field currently, there is potential for various species of bees tobe used to deliver other useful compounds.

Another potential area of studyis whether or not BVT's precise delivery of biological pesticides could be beneficial to the bees themselves.

Spraying for pests with traditional neonicotinoid products and methods has been shown to be harmful to be bees and other insects and is thought by some to possibly contribute towhat is known as "colony collapsedisorder," where the majority of bees leave the hive and eventually die off.

• Beelifespanshortened by exposure toneonicotinoids, study says
• Pesticides may threaten spring breeding of wild bees, researcher says
• Health Canada proposes ban of controversialneonicotinoidpesticide

By using bees to deliver lower levels of pesticides in a more targeted way, farmers may get the protection they need for their cropswhile at the same time keeping excess amounts of chemical pesticidesout of the environment.

Pesticide useis an issue that has beentop of mind for Canadians, at least according to one recent survey.

Expansion could be next

Malikhas been with BVT less than a year butsees "tremendous potential" in the company's technology.

He hopes to expand outside North America and break into big markets in Latin America and Asia. Todo that, BVTmay have to partner with a much larger multinational company to helpscale up.

At the farm, Passafiume's daughter, Brittany, takes a break from hand weeding the strawberry field that can't be sprayed with traditional fungicides if the farmis to retain its organic certification. As someone who spends long hours working in the fields, she says she thought BVT's system seemed like a"healthy alternative" to chemical pesticides.

The Passafiumes havebeen using it for threeyears now.

"It's been incrediblysuccessful," she said.