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Restoring productivity of compacted forest soils with tillage

Creator:: Whitaker, Carol Anne
Abstract:: Tillage of forest soils compacted by ground-based logging systems is a practice that is becoming widely accepted in the Pacific Northwest. However, past research has failed to adequately define the conditions and specifications that particular tillage operations should meet in order to produce the maximum growth response from planted seedlings....
Resource Type:: Masters Thesis

Effects of tillage-induced soil compaction on carrot seedlings emergence and yield

Creator:: Thomasson, James E.
Abstract:: The effects of five tillage treatments on soil bulk density and mechanical impedance were examined on Newburg sandy loam soil in the Willamette Valley, Oregon, in 1987. Subsequent effects on seedling emergence and yield of carrots (Daucus carota L., cvs. Orlando Gold and Royal Chantenay) were also measured. Mechanical impedance...
Resource Type:: Masters Thesis
Full Text:: correlation with soil mechanical impedance at 5 cm. EFFECTS OF TILLAGE-INDUCED SOIL COMPACTION ON CARROT

Tilling compacted forest soils following ground-based logging in Oregon

Creator:: Andrus, Charles W.
Abstract:: Implements for tilling compacted forest soils were tested on sites logged with ground-based machines in Oregon. The sites covered a variety of soil conditions ranging from a clay loam to a rock7 2C2 iplemeflts tested included disk harrows (four aies), brusa blades (three sites), standard subsoiler tines (two sites), wing.-...
Resource Type:: Masters Thesis
Full Text:: - tent at the time of compaction. Froehlich et al. (1980) measured increases in soil density on four

Shovel logging and soil compaction : a case study

Creator:: Floch, Rick F.
Abstract:: Shovel logging is a relatively new ground-based method of yarding tinther. It involves moving logs from stump to landing by successive swinging with a hydraulic excavator modified into a log loader by replacing the shovel bucket with a grapple. Loaders used in shovel yarding can weigh in excess of 100,000...
Resource Type:: Capstone Project

Effects of lime and VA-Mycorrhiza interactions on growth responses of sweetgum seedlings

Creator:: Davis, Elizabeth Anne
Abstract:: A study, consisting of two sequential greenhouse experiments, was designed to determine the effects of soil liming upon the fungal partner in a mycorrhizal association. A Willamette Valley foothill soil, of the Jory series, was limed in increments to achieve a range of acidity and alkalinity. The P-deficiency and P-fixing...
Resource Type:: Masters Thesis
Full Text:: induce a pathogenic effect. Effects of soil tillage on mycorrhizal develpment of had not been

Effects of environmental conditions on germination and early seedling development in Agropyron spicatum

Creator:: Evenden, Angela G.
Abstract:: This research evaluated the germination and early seedling development response of two sources of bluebunch wheatgrass (Agropyron spicatum) to a wide range of environmental conditions. Seeds collected near John Day, Oregon and Secar seed obtained from the Soil Conservation Service were used in the investigations. Evaluation of the germination response...
Resource Type:: Masters Thesis
Full Text:: germinated well at 30 C and lower levels of moisture stress. The effects of several soil moisture regimes on

The effects of compaction on hydrologic properties of forest soils in the Sierra Nevada

Creator:: Cafferata, Peter Herman Louis
Abstract:: This study evaluated the effects of a crawler tractor, a rubber-tired skidder, and a torsion suspension vehicle on several soil and hydrologic properties in the western Sierra Nevada Mountains of California. Four sites, with soil textural classes ranging from a loam to a loamy sand and elevations between 680 and...
Resource Type:: Masters Thesis

Translocation of photosynthates in soybeans (Glycine Max. (L) Merr. cv. Wilkin) as affected by soil water potential and soil temperature

Creator:: Ekasingh, Methi
Resource Type:: Dissertation
Full Text:: Potential 82 Effects on Plant Growth 86 Leaf Elongation Rate 86 Effects of Soil Water Potential and Soil

Influence of soil acidity upon nodulation and growth characteristics of Trifolium subterraneum L.

Creator:: Almendras, Angela S.
Abstract:: Previous research had identified four serogroups of Rhizobium trifolii indigenous to Abiqua soil (fine, mixed, mesic, Cumulic Ultic Haploxerolls). Nodulation of subterranean clover (Trifolium, subterraneum L.) by two of the serogroups, 6 and 36, was influenced by the application of CaC0₃ to the soil. The studies described in this thesis...
Resource Type:: Dissertation
Full Text:: et al., 1986). Influence of Acidity on the Host Plant Characterizing the effect of soil acidity on

Growing winter wheat on poorly drained soil

Creator:: Goetze, Norman R. (Norman Richard), Stoltz, Michael, Jackson, T. L. (Thomas Lloyd), 1922-, and Oregon State University. Extension Service
Abstract:: Published July 1981. 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/catalog
Resource Type:: Technical Report
Full Text:: Growing Winter Wheat on Poorly Drained Soil Theory Poorly

ScholarsArchive@OSU

Restoring productivity of compacted forest soils with tillage

Effects of tillage-induced soil compaction on carrot seedlings emergence and yield

Tilling compacted forest soils following ground-based logging in Oregon

Shovel logging and soil compaction : a case study

Effects of lime and VA-Mycorrhiza interactions on growth responses of sweetgum seedlings

Effects of environmental conditions on germination and early seedling development in Agropyron spicatum

The effects of compaction on hydrologic properties of forest soils in the Sierra Nevada

Translocation of photosynthates in soybeans (Glycine Max. (L) Merr. cv. Wilkin) as affected by soil water potential and soil temperature

Influence of soil acidity upon nodulation and growth characteristics of Trifolium subterraneum L.

Growing winter wheat on poorly drained soil

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