OBJECTIVE FORESTRY

Detailed explanation-1: -This pattern of growth forms one growth ring per year. This also creates two fairly distinct zones within each growth ring which are called earlywood (or springwood) and latewood (or summerwood). Earlywood tends to be lighter in color than the latewood.

Detailed explanation-2: -Within the secondary xylem, regions of more densely packed cells formed in the dry and/or cold season are called late wood. These alternate with rings of larger cells formed in the following growing season, called early wood. An annual growth ring is composed of the early wood and late wood formed in a single year.

Detailed explanation-3: -Tree rings form in the trunk of a tree from new cells generated in the cambium, the meristem (growing point) that lies just beneath the tree’s bark. In the early part of the growing season when the tree is emerging from dormancy and growing conditions are near perfect cells grow rapidly and are less dense.

Detailed explanation-4: -Earlywood is porous, and made up of thin walled cells, compared to latewood, which is influenced by colder temperatures and drier conditions. As a result, latewood is made of densely-layered, strong, thick-walled cells. Both earlywood and latewood serve a purpose for the tree.