Treesearch

Lake States pulpwood production increased to 9.4 million cords in 1993. Central States pulpwood production decreased 19%--from 356 thousand cords in 1992 to 288 thousand cords in 1993. Plains States pulpwood production was 114 thousand cords. Pulpwood production is shown by county and species group for Michigan, Minnesota, and Wisconsin.

The fifth inventory of Michigan's Western Upper Peninsula Unit reports 12,329.1 million acres of land, of which 4,836.5 million acres are forested. This bulletin presents statistical highlights and contains detailed tables of forest area, as well as timber volume, growth, removals, mortality, and ownership.

The fifth inventory of Michigan's Northern Lower Peninsula forests reports 11,345.1 thousand acres of land, of which 7,415.2 thousand acres are forested. This bulletin presents statistical highlights and contains detailed tables of forest area, as well as timber volume, growth, removals, mortality, and ownership.

Lake States pulpwood production increased to 8.8 million cords in 1992. Central States pulpwood production increased about 5%--from 339 thousand cords in 1991 to 356 thousand cords in 1992. Pulpwood production is shown by county and species group for Michigan, Minnesota, Wisconsin, Iowa, Missouri, Illinois, and Indiana.

Presents herbaceous legumes as an alternative to herbicides in forestry. Discusses benefits associated with the capability of legumes to control weeds and promote the growth of young trees.

Gives procedures for the field identification of birdseye in standing sugar maple (Acer saccharum Marsh.) trees.

The Southern U.S. pulpwood harvesting industry experienced substantial changes in productivity and logging costs from 1979 to 1987. This research measures physical and economic changes in southern timber harvesting and the degree of industry shifting between different levels of harvesting mechanization.

Poplar leaf nitrogen should generally be maintained at more than 3%, but concentration varies with clonal parentage, tree age, year, and site. Recommendations are given for establishing a fertility monitoring program.

Reports that both forest floor removal and soil compaction significantly reduced biomass and height of 2-year-old aspen suckers in plots in northern Minnesota.

Describes a network of short-rotation, Populus research and demonstration plantations that has been established across a 5-state region in the north-central U.S. to identify suitable hybrid poplar clones for large-scale biomass plantations in the region. Reports 6-year results.