Principles: Growth tests arc based on the principle that vigorous seeds grow
at a faster rate than poor vigour seeds even under favourable environments.
Vigorous seeds rapidly germinate, metabolize and establish in the field. 'Iherefore,
any method used to determine the rapidity of growth of the seedling will give an
indication of seed vigour level.
Apparatus and equipment: All the equipment,>and materials needed to
conduct a germination test are required. Additionally, a LOp loadingbalance and an
air oven are also required.