Treesearch

From poletimber stand thinnings, 52 trees were bucked into 8-foot lengths, and 49 trees were felled and bucked into 10-foot lengths, The 8- and 10-foot pieces were sawed into pallet cants and side lumber suitable for pallet parts. The sawed yield, by tree, from each length category was compared to the predicted yield of the same trees if bucked into 4- and 6-foot bolts before sawing. Short-bolt processing of trees would have yielded 11 percent more than actual yields for trees cut into 8-foot sections, and 17 percent more than actual yields for trees cut into 10-foot sections.

An automatic mat-watering system for growing hardwood seedlings in containers was designed and tested. The system has only one moving part, and no electrical requirements. There is no need to calculate different watering schedules for different growth phases, different hardwood species, or different evapotranspiration conditions. Results were excellent with mat watering combined with simple, peat-vermiculite mixes, and pelleted, slow-release fertilizers. The system is economical, simple, and physiologically ideal. Mat watering was effective in growth rooms, controlled environment chambers,...

On July 15 and 16, 1979, at least 6 inches of rain fell in central West Virginia during 3 hours, a storm of return period longer than 1,000 years. More than 6 miles of logging roads were examined for evidences of soil erosion and sediment delivery to streams. Erosion was negligible on very stony soils where (a) logging roads were litter covered, (b) road grades were less than 15 percent, and (c) volumes of overland flow on logging roads had been small. Severest erosion ranged from 0.6 to 0.8 ton of soil and rock per foot of logging road. Average rate of erosion (from logging roads only)...

Two 50-inch diameter headsaws were used for sawing (a) hardwood cants into boards, and (b) hardwood bolts into pallet parts. One saw had a 9x10 gage plate with 114-inch kerf teeth, and the other had a 7x8 gage plate with 9/32-inch kerf teeth. Power consumption for the two saws was determined with a watt-hour meter, measuring power used for paired cuts in 6-inch thick hardwood cants. Product yields for the two saws were compared by sawing matched samples of hardwood bolts into pallet parts. The 114-inch kerf saw consumed an average of 15 percent less power than the 9/32-inch kerf saw....

Two commercial preparations of Bacillus thuringiensis (Bet.) were aerially applied in 1980 to populations of spruce budworm (Choristoneura fumiferana (Clem.)) in Arizona, Maine, New Hampshire, and Wisconsin. Operations were conducted under the auspices of CANUSA-East with standardized procedures for spray application and population monitoring. The 8 Billion International Units (BIU) Dipel® and Thurlcide® formulations are effective and similar for spruce budworm control when applied under favorable conditions. This paper compares results between locations and critiques the experimental...

Recommendations are given on the classification of forest land in New England on the basis of physiographic region, climate (elevation, latitude), mineralogy, and habitat. A habitat map for the Bartlett Experimental Forest in New Hampshire is presented based on land form, vegetation, and soil materials. For each habitat or group of habitats, data are presented on stand composition, understory vegetation, biomass, volume, and diameter development by species.

Applications of Roundup, a glyphosate, by mistblower were effective in controlling hay-scented fern, blackberries, and some tree, shrub, and herbaceous species on an experimental watershed in West Virginia. Damage to planted Norway spruce was slight at rates of 1, 2, and 3 qt/acre (0.75, 1.50, and 2.25 lb/acre of the acid glyphosate). A variety of hardwood species were killed following injections of 20 or 50 percent solution of Roundup at a rate of 1.5 ml per incision. The cuts were spaced at 1.5 inches, edge to edge, around the stem near groundline. Resprouting of the treated hardwoods...

Organic amendments can be included in minesoil revegetation treatments to produce high-density ground covers or increase the yield of pasture and forage crops. They may provide an alternative to the "topsoiling" requirements under current surface-mining laws and regulations. In this study, shredded hardwood bark, composted municipal waste, and a tannery waste were applied to an acidic minesoil. Supplemental inorganic amendments including fertilizer, agricultural lime, and an alkaline waste from an SO2 scrubber system were applied alone and in combination with the organic amendments....

The spruce budworm population in Maine's spruce-fir forests has been at epidemic levels since the early 1970's. Spruce-fir mortality in 1976-78 is compared with predictions of what mortality would have been had the natural mortality rates remained at the levels experienced before the budworm outbreak. It appears that mortality of spruce and fir has increased 2 1/2-fold since the 1960's, that is, 60 percent of the mortality can be attributed to the budworm outbreak.

From 1961 to 1964 and in 1979, the insects found damaging acorns of northern red oak (Quercus rubra L.) in their relative order of abundance were: Curculio proboscideus F., C. sulcatulus (Casey), Melissopus latiferreanus (Wals.), C. nasicus (Say), C. orthorhynchus (Chttn.), C. longidens Chttn., Callirhytis operator (O.S.), Callirhytis fructuosa Weld., Conotrachelus posticatus Boh., Conotrachelus carinifer Casey, Conotrachelus naso LeC., and Valentinia glandulella (Riley). During 1961 to 1964, 1979, and 1980 insects damaged an average of 52.32 percent of Q. rubra acorns (range 0 to 100...