Treesearch

A simple procedure for evaluating the diameter growth of young stands in relation to potential growth is described. A comparison technique is developed which contrasts relative diameter of crop trees to the relative diameter growth of the last decade to show the condition and trend of growth in the stand. The method is objective, easy to use, and has several applications such as: (1) determining relative growth performance of trees and stands, (2) confirming the need for thinning and setting of priority among stands, and (3) determining the growth impact of disease and other growth...

Successful regeneration depends upon good coordination between seed production and seedbed preparation. To aid forest managers in scheduling seedbed preparation, a simple sequential sampling plan for estimating potential cone crops as much as a year in advance of the seed fall was developed and is described herein. With advance knowledge of the cone crop prospects, the manager can schedule seedbed preparation or select an alternative action such as postponing work or substituting planting.

Average cull deductions for 11 cull indicators were determined from over 2,000 abnormalities on 1,027 merchantable Engelmann spruce in 21 stands throughout Colorado. On a board-foot basis, Fomes pini punk knots or sporophores caused an 81 percent deduction. Deduction for broken tops or dead tops with adjacent dead rust brooms amounted to 24 percent. Basal wounds, dead rust brooms, a dead leader, frost cracks, all forks, joined at the base to another tree, spike top, and trunk wounds were each responsible for a 10 percent deduction. Fomes pini was the most important decay fungus.

This paper describes salient problems in management of timberlands on the North Slope of the Uinta Mountains and discusses broad issues inherent in management of "low site" areas

Inventory data in this report are the result of the first comprehensive survey of Utah's timber resource. The survey was conducted as part of the continuing nationwide Forest Survey. Fieldwork started in 1956 and was completed in 1961. The Intermountain Region of the U. S. Forest Service inventoried National Forest lands, and the Intermountain Forest and Range Experiment Station inventoried lands outside National Forests. The Intermountain Station combined the two sets of data into the Statewide compilation on which this report is based. Statistics on timber cut and timber products output...

The acorns of Gambel oak (Querelas gambelii Nutt.) periodically provide quantities of food for deer, elk, squirrels, turkeys, and other wildlife in the forests of the Southwest. While the species currently has little commercial value for wood products, it is important for wildlife.

Much of the loss of cattle through fences results not from breakage of the fence proper, but rather from gates not fitting properly, being dislodged from their fasteners, or simply left askew because they are too hard to close. The need then is for an easily worked gate fastener that is simple, inexpensive, and keeps a gate firmly in place to turn livestock. Such a fastener was developed several years ago at the Manitou Experimental Forest in Colorado.

Thermocouples have proved valuable in research conducted by the Fire Physics Project at the Northern Forest Fire Laboratory because they can measure several important fire variables besides flame and convection column temperatures. These include rate of spread and flame residence time. Describes a simple, rapid method of fabrication and reports useful and diverse applications of thermocouples in laboratory and field use.

Generally speaking the false truffles (Hymenogastrales) are so rarely found in abundance that ecological observations on them are necessarily fragmentary, and studies of the variability of species within, as well as between, populations are fraught with difficulties caused on the one hand by inadequate information on basic features of the supposedly well known species, and on the other by a lack of agreement as to species concepts in the various groups in the family. In the course of attacking these problems the writer has had the opportunity of following the fruiting of many species in a...

The first complete inventory of Colorado's 22.6 million acres of forest land shows 12.3 million acres of commercial forest with a volume of 52.7 billion board feet in sawtimber trees. Although timber use has almost quadrupled since 1935, Colorado's timber cut in relation to its inventory is the lowest of the Mountain States. Discusses problems in managing and increasing the cut from the State's big area of old-growth forest. Other forest values - water, forage, and recreation - are also examined from the standpoint of trends in use and present and anticipated future importance to the State...