By Mary L. Duryea, Thomas D. Landis

Ing harm ranged from scent. to basic visible visual appeal. Attributes of seedling caliber are categorised as both to slicing buds. to scraping bark to realize lifeless cambium. functionality attributes (RGP. frost hardiness. rigidity resistance) One nursery mentioned utilizing frost hardiness as a trademark of or fabric attributes (bud dormancy. water kinfolk. meals. while to start fall lifting. yet none mentioned utilizing it as an morphology). functionality attributes are assessed by way of putting indicator of seedling caliber earlier than delivery inventory to shoppers. samples of seedlings into certain managed environments and comparing their responses. even though a few potent brief­ 23.4.3 rigidity resistance lower tactics are being constructed. functionality assessments have a tendency merely 3 nurseries degree pressure resistance. They use to be time eating; although, they produce effects on complete­ the companies of Oregon country college and the try out tools plant responses that are frequently heavily correlated with box defined in 23.2.3. One nursery suggested that result of pressure functionality. fabric attributes. nonetheless. mirror exams didn't agree good with result of RGP assessments and that RGP merely person points of seedling make-up and are usually correlated higher with seedling survival within the box. so much pressure poorly correlated with functionality. assessments are carried out for reforestation group of workers instead of for Bud dormancy prestige looks correlated. at the least nurseries.

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Extra info for Forestry Nursery Manual: Production of Bareroot Seedlings

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Although not easily adaptable to Northwest terrains for natural-stand collection, mechanized cone collection should play an important future role when western seed orchards are in full production. 7 Cone storage Cones are stored (1) because processing equipment is not usually capable of extracting seeds from all harvested cones at once [81]; (2) to decrease cone moisture content, thereby reducing kiln drying time; and (3) to artificially ripen seeds of species such as true firs and improve seed-germination potential.

50. 51. 52. 53. 54. 55. 56. 57. 58. Cram. W. , and H. A. Worden. 1957. Maturity of white spruce cones and seed. Forest Sci. 3:263-269. , and L. V. Barton. 1953. Physiology of seeds. , Waltham, Massachusetts. 267 p. Curtis, J. D. 1955. Effects of origin and storage method on the germinative capacity of ponderosa pine seed. A. , Intermountain Forest and Range Exp. Sta.. Ogden, Utah. Res. 5 p. Czabator, F. J. 1962. Germination value: an index combining speed and completeness of pine seed germination.

G. 191 3. The technique of seed testing. , Society of American Foresters 8:127-138. Belcher, E. , and R. P. Karrfalt. 1978. The processing of conifer seed. , Small lot forest seed processing workshop. A. Forest Serv. Southeastern Area, State and Private Forestry. Bloomberg, W. J. 1969. Disease of Douglas-fir seeds during cone storage. Forest Sci. 15:176-181. Bonner, F. T. 1974. Seed testing. Pages 136 -152 in Seeds of woody plants in the United States. S. Dep. C. Agric. Handb. 450. Bonner. F. , and T.

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