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1:47

Late Season Defoliators

By: uvmext

As late summer progresses so-called late-season defoliators are beginning to become visible in Vermont woods. Two such insects are maple leaf cutter and maple trumpet skeletonizer. The first report of damage from maple leaf cutter was in 1911 when...

1:42

Invasive Worms

By: uvmext

Gardeners know that earthworms can be beneficial for growing vegetables and flowers by helping with soil aeration and producing fertilizer through their castings. Sugar makers may not know that earthworms and relatively newer invaders the so-calle...

1:27

International Maple Syrup Institute

By: uvmext

The International Maple Syrup Institute (IMSI) was founded in 1975 to promote and protect pure maple syrup and other pure maple products. Its mission remains largely unchanged: The organization provides an important international framework for com...

1:22

Hydrometers

By: uvmext

The Vermont maple law requires packaged maple syrup have a density of between 66.9 and 68.9 degrees Brix. Brix is a measure of sugar concentration in a pure sugar solution. Although we know there are other many dissolved minerals in maple syrup th...

0:53

Grading

By: uvmext

Grade A pure maple syrup is graded on four criteria; density, clarity, color, and flavor. All syrup must be fit within a standard density of 66.9-68.9 percent sugar. Syrup must be clear and free of any suspended particles that could form during th...

1:46

Forest Tent Caterpillars Update

By: uvmext

It appears as though the recent widespread defoliation event related to forest tent caterpillar has ended. According to the Vermont Department of Forest Parks and Recreation, there have been no reports of defoliation attributed to this native inse...

1:29

Fall Color

By: uvmext

Autumn colors in leaves of maple trees is an annual phenomenon that is highly prized for its beauty and is also economically important. As day length shortens, the tree stops making new green chlorophyll pigment while the chlorophyll already in th...

0:44

Color 1

By: uvmext

Why is maple syrup different colors? Pure maple syrup ranges in color from light golden amber to dark reddish brown. Over the course of the maple production season, the color of maple syrup produced in an individual maple operation will gradually ...

50:42

Lecture 15, plant toxins II 2-25-2022

By: gwellman

Lecture 15, plant toxins II 2-25-2022