All crops require some form of skilled or unskilled labour.
There is a difference between semi-skilled labor and unskilled labor. Semi-skilled labor requires some training. Unskilled labor does not require the same type of training.
unskilled, semi-skilled and skilled labor
A limiting factor limits the development or growth of a population, an organism or process. Examples include: shortage of skilled labor and materials, limited labor hours and machine hours.
The term skilled labor refers to work that can only be done by people who are highly trained.
skilled craftsmen
American federation of labor limited its membership to skilled craft union.
the three features of labour are: skilled semi-skilled unskilled
General labor includes many non-skilled tasks. An example of this is cleaning, sweeping, moving, and lifting. Most general labor jobs require very basic tools such as a broom, mop, or shovels.
unskilled labor
semi-skilled labor
American Federation of Labor