Treesearch

Now that even-aged silviculture is well established as a successful method of growing Appalachian hardwoods, a pressing need exists for guidelines for precommercial operations. We started research several years ago on the Fernow Experimental Forest near Parsons, West Virginia, to learn more about the cost and methodology of early crop-tree release in mountain hardwood stands. In addition, we designed studies to evaluate the biological response of stands and stems to various treatments or combinations of treatments to get some measure of their response in the framework of a practical type...

Almost like an atomic explosion, the number of commercial campgrounds in the Northeast mushroomed 800 percent between 1961 and 1967. During this same period, the number of public campgrounds increased by only 40 percent. The pattern of commercial and public campground growth in the Northeast was studied over a 6-year period to find how such growth may relate to geographic features, population distribution, and existing campground locations. This information provides insight into future campgroundamarket growth trends, and may be useful in developing recreation programs and policies.

A floristic and phytochemical survey of forests in Gujarat State, India, is being undertaken to identify sources of alkaloids, saponins, and tannins. This note is a report on the results of screening 105 plant species collected from that region.

The seeds of a sugar maple tree (Acer saccharum Marsh.) do not mature at the same time every year. And different trees mature their seeds at different times. So time of year is not a reliable measure of when seeds are ripe. Better criteria are needed. In recent studies we have found that moisture content and color are the best criteria for judging when sugar maple seeds are ripe.

This paper is the second in a series on the residential and commercial hardwood flooring industry. Unlike the first paper in the series, which dealt with oak strip flooring industry, this paper analyzes several qualitative questions pertaining to the maple flooring industry. The next paper planned for this series will analyze quantitative as well as qualitative information about the hardwood parquet flooring industry.

In 1957 the Forest Service Log Grade Committee recommended a service-wide action program in log and tree grade research. Approval of the program late in 1958 resulted in the establishment of five species-oriented timber- quality research projects covering the several groups of commercially important timber species. The eastern softwood timber-quality project was activated in 1960. The initial objective of the project was to develop better log and tree gades for eastern white pine. This report presents the results of the initial research on tree grades.

Tabulated data are presented for 10 hardwood species showing how green lumber changes in volume and grade when seasoned to the rough air-dried condition.

Benomyl, in varying amounts, was solubilized in several solvents, thus allowing injection into trees for fungus disease prevention and therapy. A large amount of benomyl can be solubilized in diluted lactic acid. The resulting solution can be infinitely diluted with water without pre-cipitation. These characteristics make it the current solution of choice for our tree injection studies.

The construction and use of an apparatus for injecting solutions under pressure into trees is described. A unique and important feature of the apparatus is that it permits injection of solutions into the outermost sapwood. It has been used to inject dye solutions and solubilized benomyl into elm, oak, and maple.