Treesearch

A supplement to Research Paper NC-9 published in 1966, and Research Paper NC-70 published in 1971, this list covers 223 additional references dealing with the growth and production of walnut.

A collection of plans; instructions for assembly, preservation and finishing; and general information on the use of hardwoods for picnic tables, benches, stadium seats, shelters, cabins, and signs.

The application of principal component analysis for interpretation of multivariate data sets is reviewed with emphasis on (1) reduction of the number of variables, (2) ordination of variables, and (3) applications in conjunction with multiple regression.

Includes 495 literature citations that deal with the environmental and pollution aspects of timber production, processing, and utilization; and general relations between forests and the environment.

Red pine sawtimber mills will increase significantly in the Lake States in the next 50 years as young stands established since the 1930's mature. The long-range effects of this increase for the Chippewa National Forest in northern Minnesota are analyzed using Timber RAM. Red pine sawtimber cut may increase eightfold in the next 50 years for the Forest.

Presents allometric volume and weight equations for Minnesota quaking aspen. Volume, green weight, and dry weight estimates can be made for wood, bark, and limbs on the basis of individual trees, diameter classes, or entire stands.

Storage of yellow and paper birch seeds for 12 years does not appear practical but seed visibility can usually be maintained for at least 8 years, if the seeds are kept in closed containers at 36? to 40?F.

Prediction of black walnut height at age 25 is graphically represented for two soil-site groups. The landowner or manager can use this growth prediction to assess the productivity of yung black walnut plantations.

An alternative to burning is needed for clearcut peatlands where only slash disposal is required to rapidly reproduce black spruce. A 2-year trial in north-central Minnesota indicates that reproduction will be rapid after full-tree skidding on nonbrushy sites taht have well-distribted sphagnum seedbeds and ample natural seeding. Broadcast burning is still recommended for most other conditions. The overall cost of slash disposal should be less by skidding than by burning if most trees are merchantable.

Amount of organic matter on the forest floor under a typical southeast Missouri oak stand varies about 2.1 tons/acre from season of greatest to season to least accumulation. This also corresponds to the amount of annual litter fall. Maximum accumulation of 7.5 tons/acre occured in Novermber after leaf-fall. Summer decomposition is rapid; minimumof 5.4 tons/acre was present in September before major leaf-fall