THE PURPOSE OF SEED CERTIFICATION
The purpose of seed certification is to maintain and make available
to the public sources of high quality seeds and propagating materials
of superior varieties so grown and distributed as to insure genetic
identity and purity.
New varieties developed by plant breeders must be increased from
a small quantity to an adequate supply for commercial planting
by Tennessee farmers. Also, other varieties that have been in use
for several years must be kept genetically pure from year to year.
Varietal purity is the first consideration in seed certification
but other factors, such as weeds, viability, mechanical purity
and grading are also important. Laboratory analysis for purity
and germination is required and each lot of seed is labeled accordingly.
Planting clean seed can reduce the adverse effects of weeds and
plant diseases. Properly cleaned and graded seed can be planted
more accurately to a desired and uniform stand.