"This USDA website will not be updated during a lapse in federal funding. Content on this website will not be current or maintained until funding issues have been resolved. However, if there is information that affects security, life, and property, this website will continue to update that information during a funding lapse."

Home Publications Nursery Manuals Forest Nursery Manual—Bareroot Chapter 4: Assuring Seed Quality for Seedling Production- Cone Collection and Seed Processing, Testing, Storage, and Stratification

Chapter 4: Assuring Seed Quality for Seedling Production- Cone Collection and Seed Processing, Testing, Storage, and Stratification

This chapter summarizes current technology concerning cone collection and seed processing, testing, storage, and stratification for the six major conifer species—Douglas-fir, ponderosa pine, lodgepole pine, noble fir, white fir, and western hemlock -produced as seedlings in North - west bareroot nurseries. Though great advances have been made in the past 20 years, further refinements are deemed necessary to continue improving seedling-production technology, especially as use of valuable seed-orchard seed is favored ove r natural-stand seed.


Download this file:

PDF document Download this file — PDF document, 208Kb

Details

Author(s): Yasuomi Tanaka

Publication: Nursery Manuals - Forest Nursery Manual—Bareroot

Personal tools