Treesearch

The effects of fertilization on the growth and development of a Japanese larch plantation in central West Virginia were evaluated after 9 years. Mean height and diameter growth of the larch trees were greater on the unfertilized plots. Foliar and soil chemical analyses were used to examine this apparent anomaly. Japanese larch demonstrated an ability to grow well on a very nutrient-deficient site and was not damaged by deer browsing

Analysis of growth, regeneration, and quality changes for white pine between the 1970's and 1980's in the six-state New England region. Growth rates seemed comparable among ail states except Rhode Island, where the percentage of growth (1.71%) seemed low. Over all states, the proportion of acreage in seedling/sapling white pine stands averaged too low (8%) to maintain the current volume and acreage of white pine. The diameter distribution of stems between 2 and 10 inches was J-shaped for all states combined, but deficiencies were noted in ail states except Massachusetts and Maine. Many of...

In the late 1950's and early 1960's, a series of studies was installed in the central hardwood forest to determine if size of clearcut opening affects the growth rate and species composition of new stands. In 1991, about 30 years after cutting, stand data were collected in 89 openings ranging in size from 0.04 to 1.61 acres. The number of stems per acre increased with opening size; however, the number of shade-tolerant species constituted a greater proportion of the stand in small openings (< 0.5 acre), while the proportion of shade-intolerant species increased in larger openings. Basal...

NOTE large file size. Presents color infrared photos in stereo pairs for the identification of New England forest cover types. Depicts range maps, ecological relations, and range of composition for each forest cover type described. The guide is designed to assist the needs of interpreters of medium to large-scale color infrared aerial photography.

Contains one workshop summary and 66 abstracts and papers of oral and poster presentations on gypsy moth biology, molecular biology, ecology, impacts, and management presented at the annual U.S. Department of Agriculture lnteragency Gypsy Moth Research Forum.