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Proceedings of Past Forest Nursery Association Meetings:

Considerations for Conditioning Seeds of Native Plants
Robert P. Karrfalt
1997: Boise, ID
The conditioning of seeds of native plants can be seen as having three main components: biological,
physical, and administrative. These three interact and at different stages one can be more prominent
than the others. However, each must be given its appropriate consideration if quality seed is to be
available for native plant regeneration. The biological component is most important because it is the
care and direction given this biological component that will determine regeneration success. Seed
supplies with high viability and high vigor are indispensable. Therefore, compromises in the biological
component should be minimized as seeds are conditioned. This point is often overlooked when time
or money are in limited supply. This paper traces the conditioning of seed beginning with harvest, to
extraction and cleaning, to storage, and ending with a brief discussion on quality control, quality
assurance, and seed certification.
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