Natural reproduction after grazing in the Stinchfield Woods as affected by crown density and soil co

Master of ScienceForestryUniversity of Michiganhttp://deepblue.lib.umich.edu/bitstream/2027.42/115537/1/39015003274134.pd

Effect of soils on the establishment of tree crops

The importance of soil factors to the establishment of tree crops is well recognized by forest soil scientists and foresters. It has, however, been overlooked by far too many foresters respon­sible for major forestation projects. The soil factors found to be significant in the establishment of both planted stock and seedlings from natural or artificial seedfall are: texture and structure characteristics of the soil pro­file as they affect moisture and aeration; depth to the ground water table; content of soil organic matter; chemical properties, including soil fertility and the occurrence of layers high in sol­uble salts and toxic substances. The importance of producing nutritionally balanced or phys­iologically balanced planting stock has been recognized, and more attention is being paid to nursery soil management prac­tices in an effort to improve the survival qualities of seedlings. The importance of mycorrhizal fungi as related to seedling sur­vival has also been well established. These relationships are well recognized in the east where foresters have been at grips with the problems for some time. In the west, foresters are just beginning to see the significance of soil factors; the specific soil-site relationships affecting the sur­vival and growth of a tree crop need to be established for western conditions.Published January 1955. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalo

Soils from Mazama ash in Oregon identification, distribution and properties

Published May 1969. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalo

Biomass estimators for thinned second-growth ponderosa pine trees /

no.41