Treesearch

Fire has often been used as a silvicultural tool in managing most of the southern pines. At present, however, there is not enough evidence to show whether similar techniques can be used in Virginia pine stands. The purpose of this note is to offer some observations on how a wildfire affected a young pine-oak stand.

One of the commonly recommended methods for deadening weed and cull trees for timber-stand improvement is by use of ammate crystals in ax notches or cups spaced about 6 inches apart around the base of the tree.

The eye of Hurricane Hazel passed to the west of the Beltsville Experimental Forest in Maryland on the afternoon of October 15, 1954. Sustained wind velocities of 66 mph (from the SE), with maximum gusts of 98 mph, were recorded nearby.

Planting experiments during the past 7 years on the Dilldown Unit of the Delaware-Lehigh Experimental Forest in Pennsylvania and elsewhere in the scrub oak type have been aimed at finding methods for converting the scrub cover to more valuable timber types at least cost. Some sort of site preparation has been recognized from the beginning as essential to successful planting on much of the scrub oak land.

Development of yield tables is prerequisite to designing forest-management plans. Yield tables have been prepared for Virginia pine in Maryland, North Carolina, and Pennsylvania. But the differences among yields in these three states are great. These differences are probably due chiefly to site. Therefore it would be desirable to have yield tables based on fairly local and uniform site conditions.

This is the fourth report on a series of studies to show the relationship of stump diameter to diameter breast high (d.b.h.) for commercially important tree species in the Northeast. This report is for yellow birch (Betula alleghaniensis).

This is the sixth report on a series of studies to show the relationship of stump diameter to diameter breast high (d. b. h.) for commercially important tree species in the Northeast. This report is for yellow-poplar (Lirodendron tulipifera).

In the nationwide forest survey being made by the U.S. Forest Service, one of the items required is the cubic-foot volume in limbs of hardwood trees. Pulp companies and others have shown interest in this kind of information.

The Pales weevil, one of the serious insect pests of the Northeast, comes into areas that have been recently cut or burned. The beetles feed on the bark of seedlings and young trees up to 18 inches high. They feed just above the ground line, often girdling the trees and killing them. They attack practically all conifers, but white pine is their favorite.

This is the second report on a series of studies (2) made show the relationship of stump diameter to diameter breast high (d.b.h.) for commercially important tree species in the Northeast. This report is for sugar maple (Acer saccharum).