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Keyword: seed production

Cone and seed production of western larch in response to girdling and nitrogen fertilization - an update

Publications Posted on: May 11, 2018
Western larch (Larix occidentalis Nutt.) is a sporadic cone and seed producer. Because the species is such an important component of the -Northern Rocky Mountain forests, methods of increasing seed production are needed. Girdling, fertilizing, and a combination of the two were used on 75-year-old western larch in northern Idaho.

Estimating potential Engelmann spruce seed production on the Fraser Experimental Forest, Colorado

Publications Posted on: December 09, 2016
Two good, three heavy, and two bumper spruce seed crops were produced during a 15-year period. There was considerable variability in seed crops, however. Not all locations produced good to bumper seed crops when overall yearly ratings averaged good or better; conversely, some locations produced bumper seed crops in 3 or more years.

Increasing Native Forb Seed Supplies for the Great Basin

Publications Posted on: May 12, 2016
Over the last 150 years, excessive grazing, annual weed invasions, increased wildfire frequency, and other human disturbances have negatively impacted native plant communities of the Great Basin. Native plant materials and appropriate planting strategies are needed to recreate diverse communities in areas requiring active restoration. Although native forbs are critical components of most plant communities, available seed supplies remain low.

Seed production and establishment of western Oregon native grasses

Publications Posted on: May 12, 2016
It is well understood that native grasses are ecologically important and provide numerous benefits. However, unfavorable economics, low seed yields for some species, genetic issues, and a lack of experience behind the production and establishment of most western Oregon native grasses remain significant impediments for their expanded use.

Important biological factors for utilizing native plant species

Publications Posted on: September 24, 2014
Native plant species are valuable resources for revegetation of disturbed ecosystems. The success of these plantings is dependent on the native species selected, quality of seed used, condition of the soil, environmental conditions before and after planting, planting equipment used, time of planting, and other factors. Most native species contain dormant seed.

Lessons from historical rangeland revegetation for today's restoration

Publications Posted on: September 24, 2014
Rangeland revegetation in the Western United States historically was applied at a large scale for soil conservation and forage production purposes. Principles of revegetation that have developed over years of research include matching site potential and plant materials adaption, use of appropriate seedbed preparation and sowing techniques, and development of large supplies of seed of adapted plants.

Regional native plant strategies

Publications Posted on: September 24, 2014
Because of increasing public interest in native plants, regional groups have been cooperating to develop native species. The Federal Native Plants Initiative was formed in 1994 to coordinate and encourage the development and use of native plants. The program they developed includes public involvement, organizational structure, technical work groups, implementation plans, and followup.

Common difficulties encountered in collecting native seed

Publications Posted on: September 24, 2014
The increased demand for native seed has surpassed our ability to provide high quality range-collected seed. This paper discusses some of the hazards and common mistakes associated with the collection of wildland native seed.

Native plant restoration on the Going-to-the-Sun Road, Glacier National Park

Publications Posted on: September 24, 2014
Since 1991, 53 acres of roadside vegetation and soil were removed along sections of the historic Going-to-the-Sun Road during road rehabilitation activities. Restoration strategies used indigenous plant material to re-establish plant cover, prevent erosion, compete with exotics, and improve aesthetics. From several hundred collections, simple seed mixes were created that included early colonizers and late seral species.

Collection and production of indigenous plant material for national park restoration

Publications Posted on: September 24, 2014
The National Park Service is taking the "Restoration" approach to reestablishing native plant communities by salvaging topsoil and by seeding and planting native indigenous plant materials. In this way, they are making every effort to protect the genetic integrity of the often unique native plant resource.