woods

Woods

• Secondary xylem is called wood
• Angiosperms wood having vessels is known as porous wood , while the vessels gymnospermous wood is called non-porous wood
• Wood formed during spring season and having larger xylem elements , while the wood formed during winter or autumn having smaller xylem elements is known as winter wood & autumn wood or late wood
• Wood peripheral in position in stem, which is lighter in colour and meant for conduction of water and minerals  is known as wood or laburnum . while the central position of the wood which is dark in colour due to deposition of tannins, resins , gums and tyloses is called dark wood or heart wod or dura known men . it performs mechanical function
• Drying of wood or minimizing  water content of wood is known of seasoning  wood . it can be done by two ways , either naturally by air seasoning or artificial by kiln seasoning

Important wood :-

1.       Lightest Wood :- Balsa wood or Ochroma

2.       Heaviest wood :-  Krugiodendron ferrum

3.       Iron wood :- Guaiacum officinale

4.       Walnut wood :- Juglans regia

5.       White willow:- Salix alba

6.       Mulberry wood:- Morus alba

7.       Ebony wood:- Diospyros ebenumona

8.       Indian red wood:- Dalbergia sissoo

9.       Indian rose wood or Indian black wood :-Dalbergia latifolia

10.   Austrailian black wood :- Acacia melanoxylon

11.   Teak wood :- Tectona grandis

12.   Sal wood :-Shorea robusta

13.   Haldoo wood :-Adina cordifolia

14.   Populus :- Plywood , match sticks, paper pulp etc