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Results for: 'end of long boom'

45:10

HST67/ENVS167#1-3_Long_Transitions

By: anbuchan

Third lecture in series on hunter-gatherers, focusing on the long transition to farming.

46:18

HST67/ENVS167#3-3: The Global Predominance of Agriculture-Based Empires

By: anbuchan

Lecture reviewing the long global predominance of agriculture-based empires.

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...

1:47

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...

1:37

Maple Color Grades

By: uvmext

There are four grades of pure maple syrup; Golden Color/Delicate Taste, Amber Color/Rich Taste, Dark Color/Robust Taste and Very Dark Color/Strong Taste. Each grade has a range in color as defined by its light transmittance. Knowing the color of p...

1:31

Photosynthesis

By: uvmext

The sugaring season has been over for a while. Maple trees ended their annual period of dormancy when their winter buds broke, allowing new leaves to emerge. These lush green leaves are now working to produce all the energy needed for the tree to ...

2:08

Tapping

By: uvmext

Winter is almost over and spring is almost here; it's time to make maple syrup. Each season sugar makers have to drill a new hole if they want to collect sap. The reason for this has to do with how trees respond to wounds. When a hole is drilled i...

1:35

Thrips

By: uvmext

Pear thrips is a species of insect that while native to Europe and Eurasia has been present in the United States for over 100 years. This insect is slender and brown as an adult and just over one mm long with delicately fringed wings. Thrips were ...

1:24

Shade Tolerance 2

By: uvmext

As trees form, the size and shape of its stem and crown, will be impacted by living in a low light environment such as the forest's understory. So-called suppressed trees are able to capture just enough sun to survive. Sugar maples growing in the ...