Crippling viruses threaten Michigan blueberries

By Caroline Scott-Thomas

- Last updated on GMT

The Michigan Department of Agriculture has announced that it will meet with blueberry producers to discuss ways to protect the industry after two crop-devastating viruses were detected by researchers.

Michigan produces more blueberries than any other US state, harvesting 110m pounds of the fruit last year, valued at $124m. The fruit has become particularly popular in beverages in recent years on the back of a raft of science detailing its high antioxidant content.

This is the first time that the two exotic viruses, known as blueberry shock and blueberry scorch, have been found in Michigan, although they have been known to cause serious losses for blueberry producers in West Coast and mid-Atlantic states. The viruses were discovered as part of routine crop surveys being carried out by researchers from Michigan State University (MSU).

Although blueberry shock and blueberry scorch have the capacity to devastate crops, they are not harmful to human health.

The Michigan Department of Agriculture (MDA) said in a statement: “MDA is working with a team of blueberry experts at MSU to develop a response plan that will protect Michigan’s blueberry industry. The initial action will include eradication of the infected plants and then monitoring of nearby blueberry plantings to assure that the disease has been eliminated. MDA and MSU have partnered to assure adequate outreach information on these exotic viruses is provided to blueberry growers.”

Following the surveys, MDA has said it will meet with blueberry producers in September to discuss science-based strategies to protect the industry.

The MDA said that the viruses were found at “several locations in west Michigan.”

There is no known cure for either of the diseases, which are passed between plants by pollinating insects and aphids, affecting blossoming, foliage and crop yield.

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