Treesearch

Arkansas' economy depends heavily upon the State's forest resource. In value added by manufacture, wood-using industries far outrank all others; they also furnish a livelihood for almost half of all employees engaged in manufacturing.

During the past few years several pulp and paper companies in the Southeast have started to purchase pulpwood by weight rather thanby volume. The trend toward buying by weight is strong and getting stronger. This conversion from volume to weight measurement of pulpwood brings up many questions. For instance, is the weight basis fair to both buyer and seller? What are exact weight equivalents for a cord of wood? So far, the weight basis seems to be working out with reasonable justice to buyer and seller.With regard to equivalents, we do not have exact answers because the matter is complicate...

The genus Torymus is a group in which the vast majority of species are ectoparasitic on dipterous or hymenopterous gall makers. Three species, however, have been recorded from Homoptera, one on the eggs of Cicadidae and two others as gall parasitoids of the genus Pachypsylla which are gall makers of Celtis sp. (hackberry). Torymus pachypsyllac (Ashmead) is recorded, Ashmead (1888), from twig gals of Pachypsylla venusta (Osten Sacken). An additional host record is supplied by Lienk (1951), who reords it from the leaf gall maker. Another species, Torymus scalaris (Huber), is recorded from...

The Southern Appalachian Research Center is one of seven such sub-divisions within the territory of the Southeastern Forest Experiment Station. It is responsible for the U.S. Forest Service research program in the highlands of southwestern Virginia, western North Carolina, eastern Tennessee, and northwestern Georgia.

This study is part II of an investigation pertaining to the peripheral-milling process of planing lumber. Some relationships were determined between cutterhead horsepower and various combinations of specimen, cutterhead, and feed factors. Power demand curves were interpreted through comparison with simultaneously taken one micro-second photos of the forming chips. Secondary consideration was given to the quality of surface obtained. The cutterhead variables, feeds, and speeds employed are in the range of those commonly used in industry, i.e., feed speeds to 500 FPM with cutterheads ranging...

Another record high was established in pulpwood production by southern states during 1955. The total harvest amounted to 18,014,600 cords, an increase of 1,745,000 cords, or 10.7 percent, over production in 1954. The sharp upward trend of production in the South is especially apparent when compared with earlier years. The 1955 cut was about double the amount cut in 1947 and three times as great as the total production in 1940. Current activity in construction of new mills, together with installation of additional capacity in operating mills, can be expected to create new production records...