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Flow rates and characteristics of Dimilin, Dylox 1.5, Orthene 75S, and Sevin 40 oil / by James Wernz and George P. Markin.
Insecticides.
Flow rates are presented for Dimilin, Dylox 1.5, Orthene 75S, and Sevin 4-oil at five pressures and four temperatures using three standard T-jet nozzles. Physical properties of settling, density, and viscosity and handling characteristics are also...
U.S. Forest Service Research Legacy Documents

Point and line-intersect sampling in pinyon-juniper woodlands
Pinyon pines -- United States ; Junipers -- United States ; Pinyon pines -- United States.
Two probability proportional to size (p.p.s.) sampling methods have been adapted for use in pinyon-juniper woodlands. Procedures are described for estimating biomass, stand basal area, canopy cover, tree density, and growth rates using either point...
U.S. Forest Service Research Legacy Documents

A management decision framework for winnowing simulated all-aged stand prescriptions
Forest management -- Computer programs.
The relatively simple set of WINNOW procedures and computer programs for simulating and selecting one best silvicultural/managerial all-aged prescription from many alternatives is described. The selection basis may be sustained annual volume or...
U.S. Forest Service Research Legacy Documents

Problems in lodgepole pine thinnings basal live limbs and fill-in regeneration
Lodgepole pine -- Montana ; Lodgepole pine -- Idaho ; Forest thinning -- Montana ; Forest thinning -- Idaho ; Forest regeneration -- Montana ; Forest regeneration -- Idaho.
Leaders that develop from live limbs left on stumps in thinning operations must be removed if thinning goals are to be fully realized. A linear regression model was developed to relate the height of the lowest live limbs of lodgepole pine trees to...
U.S. Forest Service Research Legacy Documents

Economic considerations in use and management of Gambel oak for fuelwood
Fuelwood crops--United States ; Oak--Economic aspects--United States
Samples of 90 trees in north-central Utah were examined to determine growth rates for Gambel oak.These growth data were used in an analysis to determine per-stem values of oak as residential fuelwood. Some oak stands in north-central Utah contain...
U.S. Forest Service Research Legacy Documents

Susceptibility of ponderosa pine to western gall rust within the middle Columbia River system
Ponderosa pine -- Disease and pest resistance -- Northwest, Pacific ; Tree rusts -- Northwest, Pacific ; Rust fungi -- Northwest, Pacific.
esponse to artificial inoculation by western gall rust. The northern inland populations were highly resistant. Only 28 percent of the seedlings had galls 39 months after inoculation. Three major resistant reactions were observed: no symptoms,...
U.S. Forest Service Research Legacy Documents

Effect of heating rate on char yield from forest fuels
Char; Forest fires--United States; Heat of combustion.
Char yield at 500° C has been measured for 40 typical forest fuels, including foliage, wood, small stems, and bark. The effect of changing heating rates was determined from 20° C/min to about 1000° C/min, to simulate a range of burning...
U.S. Forest Service Research Legacy Documents

A transmitter for tracking wildlife
Radio -- Transmitters and transmission -- Design and construction ; Animal radio tracking ; Wildlife monitoring -- Equipment and supplies.
Schematics are presented for a transmitter with an amplifier stage to increase receiving distance. Weight of the transmitter with one battery is 2 ounces, maximum battery life is 45 days, and maximum receiving distance is 2-1/2 miles.
U.S. Forest Service Research Legacy Documents

Components of adaptive variation in pinus contorta from the inland northwest
Variation (Biology) ; Evolution ; Lodgepole pine.
Genetic variation among 83 populations of Pinus contorta from the Northern Rocky Mountains of the United States was studied with 7-year-old trees planted in three contrasting environments. Analyses of nine traits reflected adaptation to biotic and...
U.S. Forest Service Research Legacy Documents

Evaluating proposed improvements of public rangelands
Rangelands -- United States
Concepts and processes for economic analysis of a rangeland development project are discussed. Various approaches to estimating the value of animal unit months of grazing use may be used. The actual method employed will depend on the analysis being...
U.S. Forest Service Research Legacy Documents

Measuring and interpreting fire behavior for correlation with fire effects
Fire
Attempts to correlate fire behavior to fire effects have been handicapped by the lack of clearly identifiable parameters for quantifying fire behavior. The authors identify two key parameters of fire behavior—heat per unit area and f ireline...
U.S. Forest Service Research Legacy Documents

Beaver in western North America : an annotated bibliography, 1966 to 1986
Beavers -- Bibliography. Rodents -- Northwest (U.S.) -- Bibliography.
This annotated bibliography of published literature on the beaver (Castor canadensis) contains 206 references to both technical and popular articles and covers a period from 1966 to 1986. Emphasis is on the Western United States and Canada. A...
U.S. Forest Service Research Legacy Documents

Shade materials for modifying greenhouse climate
Greenhouses -- Climate ; Greenhouses -- Environmental engineering ; Greenhouses -- Shading ; Temperature control.
Effects of several shading materials and methods of installation on greenhouse temperature, and on light intensity, distribution, and quality were evaluated. A synthetic fiber shade cloth installed outside produced lowest greenhouse temperatures....
U.S. Forest Service Research Legacy Documents

Estimating costs of collecting and transporting forest residues in the Northern Rocky Mountain region
Clearcutting -- Rocky Mountains Region -- Costs ; Slash (Logging) -- Rocky Mountains Region -- Costs.
A model is presented for computing the costs of harvesting forest residues, based on several key characteristics of the residues and the logging area. Costs per unit are presented in tabular form for several alternative harvesting methods.
U.S. Forest Service Research Legacy Documents

Proceedings of the Western Juniper Ecology and Management Workshop, Bend, Oregon, January 1977.
Juniper - - Congresses.
Western juniper (Juniperus occidentalis subsp. occidentalis) is an important invader of range lands in central and eastern Oregon. Many people have asked questions about its control, effect on range productivity, and its benefits. The papers in...
U.S. Forest Service Research Legacy Documents

Research natural areas in the Northern Region :
Research natural areas - - Idaho. ; Research natural areas - - Montana. ; Research natural areas - - North Dakota. ; Research natural areas - - South Dakota.
Since 1927, Federal land management agencies have been actively developing a system of Research Natural Areas (RNAs) on federally owned lands. The purpose of this guidebook is to make these areas known to the scientific community and thereby...
U.S. Forest Service Research Legacy Documents

Lodgepole pine logging residues : management alternatives .
Lodgepole pine. ; Slash (Logging)
The dollar and nondollar effects of alternative levels of residue utilization in mature lodgepole pine are compared. Net dollar returns were greater in conventional logging (removal of green sawlogs to a 6-inch top, with slash piled and burned)...
U.S. Forest Service Research Legacy Documents

Prediction of height increment for models of forest growth .
Trees - - Growth - - Computer programs.
Functional forms of equations were derived for predicting 10-year periodic height increment of forest trees from height, diameter, diameter increment, and habitat type. Crown ratio was considered as an additional variable for prediction, but its...
U.S. Forest Service Research Legacy Documents

Low-cost harvesting systems for intensive utilization in small-stem lodgepole pine stands .
Lodgepole pine. ; Timber.
Three different skidding methods (small rubber-tired skidder, horse, and small tracked tractor) were compared in an overmature lodgepole pine stand in Montana. Five comparable units were logged using two different utilization standards -- loggers'...
U.S. Forest Service Research Legacy Documents

Fire retardant ground distribution patterns from the CL-215 air tanker .
Fire extinction - - Chemical systems. ; Fire extinction - - Research.
Several fire retardants in current use were dropped from the Canadair CL-215 to determine drop height effects and for evaluation of the tank and gating system. Mathematical models for each retardant and load size were developed for predicting the...
U.S. Forest Service Research Legacy Documents

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