You are here

Keyword: seed production

Comparisons of cultivation methods for Lupinus sericeus, L. argenteus, L. prunophilus, and L. arbustus

Publications Posted on: October 02, 2019
Fire and invasive weeds have increased the demand for native seed for restoration across the Great Basin region of the US. Cultivation of native forbs could provide lessexpensive seed in necessary quantities to meet restoration needs that cannot be harvested from wildland populations alone. We evaluated 2 cultivation methods of 4 lupine species (Lupinus (Tournefort) [Fabaceae]) - hairy bigleaf lupine (L. prunophilusM.E.

Engelmann spruce seed production: Long-term study on the Fraser Experimental Forest

Projects Posted on: August 26, 2019
In 1968, thirteen permanent research plots were established in Engelmann spruce-subalpine fir forests along an elevational gradient on the Fraser Experimental Forest. Seed traps were installed on these plots and have been sampled annually since 1968.  

Engelmann spruce seed production is influenced by climate

Science Spotlights Posted on: August 26, 2019
In 1968, thirteen permanent research plots were established in Engelmann spruce-subalpine fir forests along an elevational gradient on the Fraser Experimental Forest. Seed traps were installed on these plots and have been sampled annually since 1968. In 2011, tree cores were sampled to examine the relationship between climate and 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.

Pages