Most of the approximately 25 to 30 million tons of industrial wood waste generated in the United States per year is burned for energy and/or landfilled. In this study, kraft pulp from industrial wood waste was evaluated and compared with softwood (loblolly pine, Douglas-fir) and hardwood (aspen)…
Keywords: Pseudotsuga menziesii, Pinus taeda, Populus, Waste wood, Sulfate pulping, Bleaching, Mechanical properties, Optical properties, Strength, Chlorine dioxide, Kappa number
Source: 1998 Pulping Conference : October 25-29, 1998, Queen Elizabeth Hotel, Montreal, Quebec, Canada. Atlanta, GA : TAPPI Press, c1998.:p. 993-1000 : ill.
The Lake States of Michigan, Minnesota, and Wisconsin consist of 49.4 million hectares (122 million acres) of land, 19.8 million hectares (49 million acres) of which are forested, with 6% of those having been removed by law from timber production. Aspen (Populus tremuloides) is an important…
Keywords: Populus, Lumber, Mechanical properties, Structural timbers
Source: (Research paper FPL ; RP-573):8 p. : ill. ; 28 cm.
Finely divided aspen and spruce woods and a high lignin pine kraft pulp have been selectively delignified to low lignin levels using aqueous solutions of polyoxometalates under anaerobic conditions. The reduced polyoxometalates in the solutions can be reoxidized with oxygen and act as wet oxidation…
Keywords: Picea, Pinus, Populus, Sulfate pulping, Delignification, Chlorine, Polyoxometalates
Source: 1998 Pulping Conference : October 25-29, 1998, Queen Elizabeth Hotel, Montreal, Quebec, Canada. Atlanta, GA : TAPPI Press, c1998.:p. 1571-1583.
We describe here recent methods for quantitative assessment of specific P. chrysosporium mRNAs in organopollutant contaminated soils and in Aspen wood chips. Magnetic capture techniques were used to rapidly purify poly(A)-RNA, and quantitative RT-PCR protocols were developed for all known lignin…
Keywords: Phanerochaete chrysosporium, Populus, Soil fungi, Genes, Transcription, Soil pollution, Contamination, Wood chips, Genetic improvement, Lignocellulose, Strains, Organopollutants
Source: [Proceedings of the fourth meeting on the Genetics and Cellular Biology of Basidiomycetes : 1998 March 27-30, Nijmegen, The Netherlands. Horst, The Netherlands : Mushroom Experimental Station, 1998].:p. 89-93 : ill.
Most restoration projects strive to create a sustain able plant community but exclusive use of vegetatively propagated material may be preventing this goal. The dioecious willows and cottonwoods of the Salicaceae are widely used in riparian restoration projects. Hardwood cuttings have…
Keywords: Salicaceae, Populus, seed collection, seed propagation
Source: Native Plants Journal 4(2):110-117
The cottonwood leafcurl mite, Aculops lobuliferus Keifer, 1961, is renamed as Tetra lobulifera (Keifer). This eriophyid mite is capable of inflicting substantial damage on plantation- and native-grown cottonwoods (Populus spp.). We report new State and County collection records from the eastern and…
Keywords: Atari, Eriophyidae, cottonwood leafcurl mite, distribution, Populus, Tetra lobulifera, USA
Source: Intemat. J. Acarol Vol. 30, No. 1, p. 3-8
Use of competition indices in the analysis of forestry experiments may improve detection and understanding of treatment effects, and thereby improve the application of results. In this paper, we compared the performance of eight indices in an analysis of a spacing trial of four Populus…
Keywords: Analysis, clone, competition index, Populus
Source: New Forests. 27: 201–214
Abstract: The cottonwood leaf beetle, Chrysomela scripta F., is the most serious defoliator of young plantation-grown Populus in the eastern United States, yet there is a paucity of data on larval feeding performance across Populus clones used in tree breeding. Field experiments were conducted in…
Keywords: Chrysomela scripta, Populus, larval performance, short-rotation forestry
Source: Environ. Entomol. 30(4): 748-756
- The impact of cottonwood leaf beetle Chrysomela scripta F. defoliation on four plantation-grown Populus clones was examined over three growing seasons. We used a split-plot design with two treatments: protected (by insecticides) and an unprotected control. Tree height and diameter…
Keywords: Above-ground volume, chemical protection, Chrysomela scripta, defoliation impact, Populus, short-rotation forestry
Source: Agricultural and Forest Entomology (2002) 4: 293-300
An artificial diet was developed for labortory rearing of the cottonwood leaf beetle, Chrysomela scripta F., and the imported willow leaf beetle, Plagiodera versicolira (Laicharting). To reduce microbial contamination of the media, procedures were developed for the separating egg masses and…
Keywords: Chrysomela scripta, Plaiodera versicolora, artificial diet, Populus, cottonwood leaf beetle, imported willow leaf beetle, Coleoptera, Chrysomelidae
Source: J. Entomol. Sci. Vol. 25 no. 3.:p. 475-480