Keeping a Vineyard Pest in Check

MealybugHonig Vineyard & Winery in the Napa Valley town of Rutherford is known far and wide for its “green” practices — including the use of sniffer dogs.

Imagine a nose that is thousands of times more powerful than a human’s when it comes to detecting subtle odors. Put that nose on a golden retriever, give it some extensive hands-on training, and you have the latest weapon in the winegrape growers’ war on the vine mealybug.

In 2005, Michael Honig worked with Dr. Bonnie Bergin, founder of Assistance Dog Institute (now known as Bergin University) in Santa Rosa, to help train some special golden retrievers. Referred to as “sniffer dogs” by grape growers in Napa and Sonoma counties, they could detect the female mealybug pheromone. Early detection of the bug allows the grower to treat or remove a vine or two, alleviating any broad use of pesticides.

Vine mealybugs are difficult to detect, being nearly invisible to the naked eye, and hide under bark and roots. Dozens can fit inside of a one-inch square. They attack vineyards by feeding on the tender vines and leaving a heavy excretion of honeydew that promotes the growth of black, sooty mold.

The vine mealybug has been held in check on the North Coast to date, and area growers are being proactive in their efforts to make sure it doesn’t get established.

For that, they have, in large part, Michael Honig to thank.

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Posted in Wine and the Environment
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