findervef.blogg.se - Doug fir seedlings

#DOUG FIR SEEDLINGS HOW TO#

Effects of stem girdling on cone yield and endogenous phytohormones and metabolites in developing long shoots of Douglas-fir ( Pseudotsuga menziesii).

Range-wide chloroplast and mitochondrial DNA imprints reveal multiple lineages and complex biogeographic history for Douglas-fir. Khasa, Jesús Vargas-Hernández, Javier López-Upton, Barry Jaquish, Jean Bousquet.

Xiao-Xin Wei, Jean Beaulieu, Damase P.

Comparative genetic responses to climate in the varieties of Pinus ponderosa and Pseudotsuga menziesii: Reforestation. Comparative genetic responses to climate in the varieties of Pinus ponderosa and Pseudotsuga menziesii: Clines in growth potential. Comparative genetic responses to climate for the varieties of Pinus ponderosa and Pseudotsuga menziesii: Realized climate niches. glauca) artificially inoculated with Armillaria ostoyae. Douglas-fir (Pseudotsuga menziesii (Mirb. Resistance and tolerance in juvenile interior Douglas-fir trees ( Pseudotsuga menziesii var. This region was excluded in the program’s early stages because of low site productivity however, recent increases in planting numbers combined with severe seed shortages for the area necessitated the establishment of orchards for these lands. In 2010, parent trees from southern SPZs were selected on the basis of projected climate similarity to establish new seed orchards for the Thompson Okanagan SPZ. In 2016, approximately 15.3 million (31 percent) of the 49.4 million Interior Douglas-fir seedlings scheduled for planting in B.C. Seed orchards for each SPZ were established in the North Okanagan in the early 1990s. coastal breeding program and superior submaritime seed sources growing in the 40-year-old Trinity Valley range-wide Interior Douglas-fir provenance test. The Nelson second-generation breeding population has been augmented with high breeding value parents from the B.C. Inter-varietal (Coastal/Interior Douglas-fir) hybrids have shown to be hardy and fast growing in the Nelson low elevation zone. The first-generation progeny testing program includes 1,466 open-pollinated families and 31 test sites across the six seed planning units (SPU). The second-generation crossing program focuses on the Nelson SPZ and includes selected parents from the West Kootenay, Shuswap Adams and Mica regions. Within south-central B.C.’s wide-ranging and ecologically diverse land base, six seed planning zones (SPZ) were delineated based largely on biogeoclimatic information and population genetic differentiation. The recent discovery of resistance to Armillaria root disease in Interior Douglas-fir suggests that resistance to root diseases could become an important trait of interest.

The breeding goal is to improve traits related to tree size (height, diameter and volume) while maintaining wood relative density near old growth values.

#DOUG FIR SEEDLINGS HOW TO#

Forest Service office for instructions on how to treat a major infestation or if the tree's needles begin to yellow and drop.The Interior Douglas-fir tree breeding program began in 1982 with the objective of producing improved and genetically diverse seed for planting on productive forest land in south-central British Columbia. Contact your county extension agent or regional U.S. Spray smaller trees with a direct stream of water from a garden hose nozzle to remove minor infestations of mites, aphids and caterpillars. The Nursery will also be open to the public for pick up on Saturday, April 29th Saturday, May 13th and Saturday. Inspect the trees routinely for pests and disease. Starting on Monday, April 24th, the State Forest Nursery in Boscawen, NH will be open from 8:00 am to 3:30 pm, Monday through Friday for customers to come in and pick up their seedling orders. If you elect to grow a flat-sided, flat-top Douglas fir hedge rather than allowing the trees to soar naturally, use hedge shears to manicure the outer edges and a chain saw to periodically cut back the trunk tops. When Douglas fir trees are more than 5 feet high, you may cut the lowest branches off flush with the tree trunk using a pruning saw. Prune the tips of a young tree's branches only if necessary to maintain the pyramid form. Thereafter, established trees need supplemental watering only during extended periods of drought.

During the second and third year after planting, continue routine watering when the top inch of soil becomes dry. Continue watering trees weekly during the first year, except for periods when rainfall is sufficient to keep the roots moist. Water newly planted trees promptly, soaking with an open garden hose or multiple buckets of water until the surrounding ground is moist. The Biodiversity Heritage Library works collaboratively to make biodiversity literature openly available to the world as part of a global biodiversity.