Treesearch

Since the introduction of plotless cruising in this country by Grosenbaugh and the later suggestion of using a wedge prism as an angle gauge by Bruce this method of determining basal area has been widely adopted in the South. One of the factors contributing to the occasionally unsatisfactory results obtained is failure to calibrate the prism used. As noted by Bruce the inexpensive prisms commonly used require the computation of a basal area factor for each prism. This is done by setting up a target of convenient width (w), sighting on it through the prism, then moving the prism forward or...

When timber is cruised using relascope, basal area and volume figures are obtained without constructing a stand table, through the use of appropriate conversion factors. Although this saving in time is very desirable for most inventories, certain management purposes require stand tables.

In these days of climbing stumpage prices it is frequently desirable to attain more precision from a relascope cruise than is possible using ready-made volume factors. Like any factors made to be approximately applicalble over a wide range of conditions, volume factors may give very misleading results under certain local condition. For this reason it is desirable to check ready-made factors under local conditions, and to calculate local factors if sufficient precision is not attained.

It is probable that a truly automatic planning operation could be devised if some of the variables commonly present in the mill-run lumber were eliminated and the remaining variables kept under close control. This paper will deal with the more general situation faced by mostl umber manufacturing plants. In other words, it will be assumed that the incoming lumber has the ordinary degree of variableness.

The purpose of this paper is to consolidate avilable information on several important browse plants of the Georgia coastal plain so that their value and over-all contribution to cattle feed can be more fully assessed and compared to other kinds of forage. Numerous observation and notes pertaining to cattle diet were accumulated in the vicinity of the Alapaha Experimental range, Berrien County, Georgia, from 1942 to 1955. These provided good estimations as to the kind and amounts of browse plants eaten at various times of the year. An indication of the nutritive value of many individual...

The objective of this paper is threefold: to outline briefly some of the avenues of approach so far employed in utilizing low-grade wood, to comment on the economic aspects of the problem, and finally, to speculate about what developments the future might bring to the field of utilization.

In the lower Piedmont, fully stocked stands of advance reproduction survive and grown underneath a great range of overwood densities of loblolly pine. A relatively small amount of overwood markedly reduces the height growth of understory seedlings as compared with that of free-growing seedlings; but a rather large additional increase in overwood density is required to bring about significant additional reduction in seedling height growth. Thus, under the shelterwood method of regeneration, considerable leeway can be exercised in the amount of overwood left. This study shows that level of...

Loblolly pine is one of the most valuable tree in the South. It grows to large size faster than any of the other ou them pines. Loblolly pine is easy to recognize. The needles are 6 to 9 inches long growing in clu ters of 3 ( occasionally 2) . I ts cones are usually 3 to 5 inche long having short sharp spines. On young trees the bark is nearly black and scaly; on older trees it is 1 to 2 inches thick and divided into irregular dark-brown scaly block . Mature tree are generally 80 to 100 feet high, having a tall, traight trunk with larger specim ns averaging about 2 f et in diameter ( fig....