Treesearch

A new method to make furniture cuttings from the best of logging residues was tested. Bolts 4 through 8 feet long were sawed to three-sided cants. The cants were then resawed to boards and dried. The dried boards were gang ripped and defects removed to obtain clear-one-face cuttings of random width and length. The 6-, 7-, and 8-foot long bolts gave good yields by this system, while the 4- and 5-foot bolts did not.

Sugar maple seedlings, grown under three nutrient and three moisture levels, were analyzed after three growing seasons for starch and ethanol-soluble sugars. Analytical procedures are detailed in the appendix. Fertilization did not affect carbohydrate levels in stems or roots. Water stress caused a significant reduction in the amount of carbohydrates in stems and roots; it had no significant effect on carbohydrate concentration in roots, but it significantly increased carbohydrate concentration in stems.

Fertilization of red oak (Quercus rubra L.) seedlings increased their terminal shoot growth. Dry, liquid, and liquid + dry fertilizer was applied to groups of undefoliated, once-defoliated, and twice-defoliated seedlings. Terminal shoot growth was measured after the first and second growing season and compared to that of a similar group of unfertilized seedlings. On the average, defoliated seedlings treated with dry or liquid + dry fertilizer grew more than unfertilized, undefoliated seedlings. The foliage color of twice-defoliated seedlings was not influenced by fertilization, but a...

Records of recreational use of Eastern backcountry areas have not been systematically kept by many trail management groups in the past. Decisions on backcountry site designs and facilities should not be made without information on visitor use and behavior. An analysis of sample data from records of overnight shelter use on the Long Trail, Vermont, indicates how such information may be used by trail managers.

Eleven forest habitats, representing distinct differences in soil materials or substrate, were defined for areas of granitic drift in the White Mountains of New Hampshire. Beech/sugar maple/yellow birch characterize successional stands on the fine tills and the enriched or cove sites (where white ash also is common). Washed fine till and coarse till are dominated during succession by beech and birch with some red maple. Red maple is the most abundant species on sandy sediments, silty sediments, and dry compact till. Softwoods, especially red spruce and eastern hemlock, characterize...

Sawlog-size even-aged hardwood stands in north-central West Virginia were fertilized with N, P, and K, singly and in combinations. Applications of N alone increased the annual basal area growth of yellow-poplar more than that of red oak during the first 7 years after fertilization, whereas P alone increased the annual basal area growth of red oak more than that of yellow-poplar. NP did not stimulate the growth of yellow-poplar more than did N alone and did not increase the growth of red oak more than did P alone. The 7-year cumulative basal area growth of yellow poplar was increased 34...

The three grades of maple syrup and a commercial table syrup containing artificial flavor and 3 percent pure maple syrup were evaluated by 1,018 women in four cities. The results indicate that differences in preference for flavor are related to how close the respondents are to a maple syrup-production region. Differences in preference among grades of pure maple syrup were slight and in reverse order of the quality implied by the Federal grading standard. Outside of the region of maple syrup production, differences in preference between pure maple syrup and the commercial table syrup were...

Thirty-one identified species of wood-rotting hymenomycetes were associated with decay and cull in upland oak stands in Illinois, Indiana, Kentucky, Missouri, and Ohio. Seven of these species produced brown rots that accounted for a volume loss of approximately 381 ft3 in the trees sampled. The remaining species produced white rots that were associated with a volume loss of 557 ft3. Stereum frustulatum, Inonotus andersonii, Polyporus compactus, S. gausapatum, and Phlebia chrysocrea were the most frequently encountered species, accounting for 70 percent of the white rot infections; 79...

Forest floor samples were collected in northern hardwood stands 5, 38, 95, and 200+ years old. The seeds contained in these samples were germinated in a greenhouse. Thirty-five species of herbs, shrubs, and trees were identified. The largest number of species, 23, were from the 5-year-old stand. The oldest stand had the fewest species, 17. Rubus and pin cherry (Prunus pensylvanica L.f.) were the most numerous of the buried seeds. Their total numbers were highest in the 5- and 38-year-old stands and much lower in the older stands. The current practice of timber harvesting at rotations of...

Single and double applications of the nuclear polyhedrosis virus of Lymantria dispar L. were evaluated for suppression of a gypsy moth infestation in Pennsylvania. The virus material, purified by isopynic centrifugation, was applied by air at the rate of 2.47 x 1012 polyhedral inclusion bodies per hectare. Two formulations of the virus were evaluated: one consisted of 1.12 kg of IMC-90001®, 0.88 liter of Chevron spray-sticker®, 4.67 liters of CIB®, and 13.14 liters of water/ha; the other was 9.34 liters of Sandoz virus adjuvant® and 9.34 liters water/ha. Application of the virus provided...