Treesearch

The location of M.T.U. in the Keweenaw Peninsula of Upper Michigan provides some unique advantages and disadvantages in provenance testing and tree improvement research. Extremes in summer and winter temperatures are uncommon because of the moderating effect of Lake Superior. Near the Lake we have about 140 frost-free days while inland the frost-free season is only 80 days or less. Many exotic species of plants will grow in the Houghton locality but are prevented from naturally migrating here because of the cold belt to the immediate south.

Michigan State University's first provenance test was started in 1958, a little more than a decade ago. Tests in three more species were started in 1959. Others have been added until the list of species covered now totals 28. There are such experiments in eight species of pine, six of elm, three of spruce, two each of larch and the true firs, and one each of Douglas-fir, poplar, birch, cherry, walnut, arborvitae and oak. Some were started by Michigan State University. In other cases we received planting stock or seeds from outside the State. Almost all the experiments are part of the NC-51...

This paper discusses the current status of a number of projects now under way on the National Forests in the Eastern Region of the USDA Forest Service.

The forest tree improvement work at the Center was started in 1949 with the introduction of some of Dr. Riker's grafted eastern white pine selections. Subsequently a program of selecting, grafting, breeding and testing for resistance was begun. The work was initiated at Basswood Lake (15 miles NE of Ely, Minnesota) rather than elsewhere on a more accessible site for two main reasons. First, the high incidence of rust in the area along with large numbers of infected Ribes bushes affords good material for testing for resistance to blister rust. Secondly, the area is situated on a peninsula....

The Institute of Forest Genetics at Rhinelander, Wisconsin, was formally opened June 6, 1957, by the North Central (then Lake States) Forest Experiment Station, USDA Forest Service.

Forest genetics research is carried on in the Genetics and Physiology Group at The Institute of Paper Chemistry. The Institute is located in Appleton, Wisconsin, and has a staff of approximately 300 people. It is a nonprofit research and educational institution that was started in 1929 and is affiliated with Lawrence University. The Institute is a graduate school granting M.S. and Ph.D. degrees. Research at the Institute encompasses not only work in the area of pulp and paper technology but also includes studies in biology, chemistry, chemical engineering, mathematics, and environmental...

The purpose of the research program, as evidenced by results as well as current research and future direction, is to add to the knowledge of the ecology and genetics of forest trees. Although we are interested in the practical gains that are possible and being realized in practical tree improvement, our contribution is in basic studies that stimulate and challenge young scientists and provide the basis for silviculture and tree improvement practice. Our main interests lie in genecology and evolution of woody plants.

The 1968 veneer-log production and mill receipts were 45.5 and 47.6 million board feet, respectively, in the Lake States--declines of 11 and 14%, respectively, since 1966. The Central States produced 37.0 million board feet of logs and received 48.8 million--about the same as in 1966.

Presents 1969 pulpwood production and receipt data for the Lake States and Central States. Pulpwood production for the Lake State given by species for each county, and production by Forest Survey Unit is compared to that of previous years. Also discusses production and use of mixed hardwood pulpwood since 1946. For the Central States, 1969 pulpwood production and receipt data are presented by State, and four production classes are shown by county.

Two biological growth functions, an exponential-monomolecular function and a simple monomolecular function, have been fit to published site index curves for 11 Lake States tree species: red, jack, and white pine, balsam fir, white and black spruce, tamarack, white-cedar, aspen, red oak, and paper birch. Both functions closely fit all published curves except those for white spruce and are recommended for use wherever mathematical functions can be conveniently used. A table of height factors is presented to simplify hand calculations of height and construction of new site index curves from...