For the plant propagation technique known as softwood cutting, see Cutting (plant).
Softwood is wood from gymnosperm trees such as conifers. The term is opposed to hardwood, which is the wood from angiosperm trees. The main differences between hardwoods and softwoods is that the softwoods completely lack vessels (pores).[1] The main softwood species (pines, spruces, larches, false tsugas) also have resin canals (or ducts) in their structure.[2]
Characteristics
Softwood is wood from gymnosperm trees such as pines and spruces. Softwoods are not necessarily softer than hardwoods.[3] The hardest hardwoods are much harder than any softwood,[4] but in both groups there is enormous variation with the range of wood hardness of the two groups overlapping. For example, balsa wood, which is a hardwood, is softer than most softwoods, whereas the longleaf pine, Douglas fir, and yew softwoods are much harder than several hardwoods.[citation needed]
Softwoods are generally most used by the construction industry and are also used to produce paper pulp, and card products.[5] In many of these applications, there is a constant need for density and thickness monitoring and gamma-ray sensors have shown good performance in this case.[6]
Certain species of softwood are more resistant to insect attack from woodworm, as certain insects prefer damp hardwood.
Yew - interior and exterior furniture (e.g., chairs, gate posts and wood turning)
Applications
Softwood is the source of about 80% of the world's production of timber,[9] with traditional centres of production being the Baltic region (including Scandinavia and Russia), North America and China. Softwood is typically used in construction as structural carcassing timber, as well as finishing timber.
^Beigzadeh, A.M. (2019). "Design, modelling and construction of a continuous nuclear gauge for measuring the fluid levels". Measurement. 138: 157–161. doi:10.1016/j.measurement.2019.02.017. S2CID115945689.