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Forest Science Database

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Abstract

The responses were studied of 2 quaking aspen (Populus tremuloides) sucker stands and 2 hybrid aspen (P. alba X grandidentata and P. tremuloides X P. tremula) plantings in northern Wisconsin to fertilization (F) and irrigation (I). Growth increases were measured over 7- and 6-yr periods for the...

Author(s)
Einspahr, D. W.; Wyckoff, G.
Citation
Tappi, 1978, 61, 3, pp 49-52
Abstract

Bigtooth and quaking aspen [Populus grandidentata, P. tremuloides] comprise approximately 11.9 million acres in US Lake States, 4.4 million acres in western US, and 100 million acres in Canada. Use of aspen timber is summarized: for the US Lake States, it accounted for 47-55% of total pulpwood...

Author(s)
Einspahr, D. W.; Wyckoff, G. W.
Citation
Northern Journal of Applied Forestry, 1990, 7, 4, pp 168-171
Abstract

Whole tree chips from a hybrid poplar clone (Populus 'Tristis No. 1') grown under short rotation, intensive culture (SRIC) were separated into three fractions using vacuum airlift segregation (VAS). The fractions were: accepts, which was predominantly a woody fraction; rejects, which contained less ...

Author(s)
Phelps, J. E.; Isebrands, J. G.; Einspahr, D. W.; Crist, J. B.; Sturos, J. A.
Citation
Wood and Fiber Science, 1985, 17, 4, pp 529-539
Abstract

The following projects are outlined: mass production of conifer (Pseudotsuga menziesii and Pinus taeda) hybrids using tissue culture and protoplast fusion techniques; study of bark characteristics of pulpwood spp. (in relation to segregation from wood, pulping and/or use as fuel; data are given on...

Author(s)
Einspahr, D. W.
Citation
General Technical Report, USDA Forest Service North Central Forest Experiment Station, 1976, No. NC-21, pp 39-42
Abstract

Summarizes, from several previous studies on Populus tremuloides in N. Wisconsin and upper Michigan [cf. F.A. 25 No. 189; 29 No. 187], data on genetic control, parent-tree superiority and expected genetic gains for a number of growth, wood and fibre properties, and concludes that the greatest gains ...

Author(s)
Einspahr, D. W.
Citation
Genet Physiol. Note Inst. Paper Chem., Appleton, Wis., 1968, No. 3, pp 6
Abstract

Data from a sand-culture experiment in which the amounts of N, P, K, Ca and Mg were varied revealed that seedlings from the P. tremuloides X P. canescens cross grew faster (as reflected in green-weight production) than those from the P. canescens X P. tremuloides, P. tremuloides X P. tremuloides or ...

Author(s)
Einspahr, D. W.
Citation
Genet Physiol. Note Inst. Chem., Appleton, Wis., 1968, No. 4, pp 17
Abstract

The survival, growth, and wood and pulp properties of 25 full-sib families of Populus tremuloides were studied in Wisconsin. Narrow-sense heritability estimates (h2) based on inter-class correlations and progeny/mid-parent regression data indicate: moderate to good control over fibre length, sp....

Author(s)
Einspahr, D. W.; Benson, MK.; Peckham, J. R.
Citation
Genet. Physiol. Note. Institute of Paper Chemistry, 1967, No. 1, pp 6
Abstract

Tests were made of the application of weed killers to the soil before planting 1-year Populus tremuloides seedlings. All treatments were more or less effective in reducing competition from grasses and herbaceous weeds, but only diuron did so without severely reducing survival and growth of the...

Author(s)
Benson, M. K.; Einspahr, D. W.
Citation
Tree Planters' Notes, 1964, No. 67, pp 15-7
Abstract

Discusses the characteristics of Populus grandidentata and P. tremuloides and possibilities of their genetic improvement [cf. F.A. 29 No. 462]. Proposes the management of selected native stands and improved varieties on short coppice rotations, with a mechanized harvesting system that includes...

Author(s)
Einspahr, D. W.; Benson, M. K.
Citation
Journal of Forestry, 1968, 66, 7, pp 557-60

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