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Phosphorus response and critical phosphorus levels of winter wheat varieties in western Oregon

Creator:: Sullivan, Dan M. (Dan Matthew), 1954-
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Soil Science presented on March 10, 1981 Title: Phosphorus Response and

Phosphorus characterization in Sri Lankan Alfisols : Soprition, fractions, plant availability and soil test suitablitiy

Creator:: Sattell, Robert R.
Abstract:: Twelve Sri Lankan Alfisols were characterized for P. Soils were incubated for three weeks with sufficient P applied (P2) to elevate soil solution P to 0.2 ug P/g solution as determined by sorption curves, with 75 percent of P2 (P1), and without P (P0). For PO treatments, (a) organic P,...
Resource Type:: Masters Thesis
Full Text:: . Sattell for the degree of Master of Science in Soil Science presented on June 6, 1989. Title: Phosphorus

Soil factors related to potassium deficiency of stone fruits in the Willamette Valley

Creator:: Selig, Randy S.
Resource Type:: Masters Thesis
Full Text:: , water volume infiltrated, and initial soil water content upon movement of K from surface applied

The mobility and plant availability of boron in selected western Oregon soils

Creator:: Parker, David R.
Abstract:: Several crops grown in the Willamette valley of western Oregon respond to applications of boron fertilizers. The acid, highly-leached soils of this area are naturally low in plant-available B. Application of B to the soil annually or at less frequent intervals is currently recommended, but the fate of applied B...
Resource Type:: Masters Thesis
Full Text:: leachate decreased as soil organic matter, clay, and free iron and aluminum oxide content increased. The

Reactions of nickel refining by-products with soils and plants

Creator:: Sheets, Priscilla Jean
Resource Type:: Masters Thesis
Full Text:: grown on Amity soil. 6 Soil pH, phosphorus, manganese, and nickel after cropping with tall fescue

Nitrate-nitrogen accumulation in the surface soil during the fallow period under different precipitation levels and tillage systems

Creator:: Senel, Atila Huseyin
Abstract:: The effects of different fallow moisture levels and tillage systems on the amount of nitrate-nitrogen accumulation in the 0-30 cm soil profile were studied. Fallow moisture treatments simulating typical dry, normal and wet precipitation cycles were established on trial plots. Data were obtained for nitrate-nitrogen, soil moisture and nitrogen mineralization...
Resource Type:: Masters Thesis
Full Text:: fallow season precipitation 2 Gravimetric soil water content as a function of time at 0-15 cm soil

Aspects of manganese nutrition in filbert trees

Creator:: Silberman, Ricardo S.
Abstract:: Lime was applied at different rates to filbert trees grown in containers in an acid soil. As lime application rate increased, the leaf Mn and extractable soil Mn were significantly reduced. In control trees leaf Mn was over 1300 ppm, but no growth reduction or Mn toxicity symptoms were found....
Resource Type:: Masters Thesis
Full Text:: when sulfur was added to the soil, the exchangeable Mn content was increased. The sulfur is rapidly

Diagnosis of sulfur deficiency and sulfur fertilization of Trifolium subterraneum L.

Creator:: Kiemnec, Gary L.
Resource Type:: Dissertation
Full Text:: - respond to the C:N:S ratio. If a soil is initially low in SO 4 -S and organic matter low in S content is

Influence of cropping and sulfur fertilization on sulfur transformations in soil

Creator:: Castellano, Steven D.
Abstract:: A 2-year field study was conducted on the effects of two sulfur fertilizers (calcium sulfate or elemental S, 0 or 50 kg S ha⁻¹ yr⁻¹) on the distribution of sulfur fractions (inorganic sulfate, C-bonded, ester sulfate, and residual S), arylsulfatase enzyme activity, and microbial biomass carbon (C) and sulfur (S)...
Resource Type:: Masters Thesis
Full Text:: organic matter content (Tabatabai and Bremner, 1972). Thus, in soil systems, biological activity plays a

Interaction of ethofumesate with dry soil

Creator:: McAuliffe, David
Abstract:: Previous studies have shown loss of ethofumesate activity when the herbicide was applied to dry soil (2% w/w moisture content) in both field and greenhouse studies, even when rainfall or irrigation was received within a few days. Laboratory studies were conducted to determine the mechanism for this activity loss. Dry...
Resource Type:: Dissertation
Full Text:: applied to dry soil (2% w/w moisture content) in both field and greenhouse studies, even when rainfall or

ScholarsArchive@OSU

Phosphorus response and critical phosphorus levels of winter wheat varieties in western Oregon

Phosphorus characterization in Sri Lankan Alfisols : Soprition, fractions, plant availability and soil test suitablitiy

Soil factors related to potassium deficiency of stone fruits in the Willamette Valley

The mobility and plant availability of boron in selected western Oregon soils

Reactions of nickel refining by-products with soils and plants

Nitrate-nitrogen accumulation in the surface soil during the fallow period under different precipitation levels and tillage systems

Aspects of manganese nutrition in filbert trees

Diagnosis of sulfur deficiency and sulfur fertilization of Trifolium subterraneum L.

Influence of cropping and sulfur fertilization on sulfur transformations in soil

Interaction of ethofumesate with dry soil

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