Seedling: A plant grown from seed till it attains a height of aboutone metre

Sapling:

• A young tree from the time when it reaches about one metre(3’) in height till the lower branches begin to fall (L.S.Khanna, 1981)
• A small tree, usually between 4 and 10 cm diameter at BH and height more than one metre (DoF, 2004).

Pole:

• A young tree from the time when the lower branches beingto fall off to the time when the rate of height growth begins to slow down and crown expansion becomes marked.
• A young tree usually between 10 and 30 cm in diameter at BH (DoF, 2004).

Tree: The stage of growth beyond the pole stage when the rate of height growth begins to slow down and crown expansion becomes marked. Or Woody plant having one erect perennial stem or trunk at least 30cm dbhand 4 metresof height (DoF, 2004).

Sustained Yield: The material that a forest can yield annually or periodically in perpetuity

Stand: A group of trees that occupies a specific area and is similar in species, age and condition

Canopy: The forest cover of branches and foliage formed by tree crowns

Virgin Forest: Natural forest uninfluenced by human activity.

Growing stock: Sum (by number or volume) of all the trees in a forest or in a specified part of the forest

Rotation: The planned number of years between the formation

Stagheaded: The condition of the tree with dead upper branches projecting above the green portion of the crown

Wind throw: Uprooted by wind

Wind firm: Able to withstand strong winds without being thrown or broken