United States Department of Agriculture
Describes and illustrates a technique to mail and store diseased leaf samples to prevent deterioration or damaage.
Compares effeects of various wee-control methods, including hericides, cultivation, and legume cover crop, on tree survival and height growth of 2-year-old hybrid poplars. Cultivation and herbicides singly or in combination gave consistently better results than the other treatment tested.
Describes the financial performance of red pine on site index 60, 70, and 80 lands by using new yield evidence and up-to-date cost and revenue assumptions. Best combinations of initial stocking, residual basal area after thinning, an rotation age are identified for two different financial criteria: soil expectation value and internal rate of return.
Herbicides of 17 different rates and formulations were oversprayed on newly planted 1-0 European larch seedlings in teh spring of 1983 at the recommended rates. Simazine, bifenox, oxyfluorfen, promamide, and oryzalin provided adequate weed control with no damage to the larch. Height growth at the end of the first growing season was one-and-a-half times greater in the...
Contains 17 papers summarizing up to 5 years of recent study on insect and disease problems of black walnut and butternut given at a workshop sponsored by the USDA Forest Service's North Central Forest Experiment Station and held in Carbondale, Illinois, June 13 and 14, 1978.
Species coefficients are reported for predicting individual tree survival for nine Lake States species, supplementing a previous report for 10 species. Tree attributes are diameter growth rate and diameter at breast height. Regional and local performances are summarized.
In 1981 wooded strips and windbreaks in Kansas coverd 336,000 acres and were more than 54,000 miles long. Wooded strips contained 300 million board feet of sawtimber and 92 million cubic feet of growing stock.
Two study sites in central Missouri oak-hickory forests were searched for nest sites of cavity nesting birds. Researchers located and measured 133 nests of 11 species. Cavity nesting bird habitat selection is affected by both snag characteristics and vegetation structure.
Projected softwood shortages and high costs of mechanized tree planting indicate that more efficient planting equipment and systems are needed. This paper presents cost and productivity data for mechanically planting red pine seelings on a site previously occupied by hardwoods in northern Wisconsin
A model is described for estimating total and merchantable tree heights for Lake States tree species. It is intended to be used for compiling forest survey data and in conjunction with growth models for developing projections of tree product yield. Model coefficients are given for 25 species along with fit statistics. Supporting data sets are also described.
Contains 26 papers that present the state-of-the-art of nongame bird research and management in the northeastern United States.
Presents equations for estimating biomass and woody size class distributions for shrubs and small trees (<2.5 cm d.b.h.) of 17 northeastern Minnesota species. Relations between stem diameter at 15 cm above ground and plant height, crown length, and stem diameter at ground are also given.
The third inventory of the timber resources of Kansas shows a 1.4% increase in commercial forest area and a 42% gain in growing-stock volume between 1965 and 1981. Highlights and statistics are presented on area, volume, growth, mortality, removals, utilization and biomass.
Discusses Minnesota saw log and pulpwood logging utilization factors developed during 1975-1976 and their implications. Compares factors for several species groups and shows their use in estimating growing stock cut for pulpwood and saw logs.
Discusses recent Minnesota forest industry trends; timber removals for industrial roundwood in 1973; production and receipts in 1973 of pulpwood, saw logs, and other industrial roundwood products. Shows trends in pulpwood and veneer log production and compares saw log production in 1960 and 1973. Discusses primary wood-using mill residue and its disposition.
Discusses 1977 pulpwood production and receipts and recent production in the Lake States and Central States. Shows pulpwood production in the Lake States (Michigan, Minnesota, and Wisconsin) by species for each county and compares production by Forest Survey Unit with that of previous years. Presents 1977 pulpwood production and receipts data by state for Central...
The volume of timber harvested from Minnesota tax-forfeited land increased from about 145,000 cord equivalents in 1960 to 235,000 cord equivalents in 1975. Actual prices paid for stumpage decreased slightly in the 1960's and increased in the 1970's. However, in deflated dollars, stumpage prices decreased slightly throughout the period.
Five site preparation treatments consisting of combinations of tillage, contact herbicide (glyphosate), and pre-emergent herbicide (linuron) were tested for their effects on tree survival and growth. Treatments had little effect on tree survival, but effects on second-year-tree height were significant and additive -- i.e., tree height increased as the number of types...
Between 9 and 12 years Larix eurolepis grew annually about 1.3 m in height and 0.6 cm in diameter. In plots with 0.8 to 1.5 m(2) of growing space, total woody biomass increased from 70.1 to 98.8 mt/ha, and the mean annual biomass increment from 7.8 to 8.2 mt/ha.
Lake States pulpwood production rose to a record 6.54 million cords in 1983. Pulpwood production is shown by county and species group in Michigan, Minnesota, and Wisconsin.