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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 availability in biosolids-amended soils

Creator:: Choate, Jeff
Abstract:: Quantifying labile phosphorus (P) pools in biosolids is needed to manage biosolids for both agronomic and environmental purposes. Phosphorus indices originated in an effort to protect surface water quality from-non-point-agricultural P inputs. The objectives of this research were to: (1) evaluate soil test components of the western Oregon P index...
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Soil Science presented on June 20, 2003. Title: Phosphorus Availability in

Correlation of phosphorus soil tests and forms of inorganic soil phosphorus with crop response and phosphorus uptake from Aiken soils

Creator:: Vacharotayan, Sorasith
Resource Type:: Dissertation
Full Text:: the Amounts of Different Forms of Soil Phosphorus and Phosphorus Content of Oats and Clover Grown

The influence of phosphatase-producing bacteria on phosphatase activity and available phosphorus in soil

Creator:: Nelson, Sheila J.
Resource Type:: Masters Thesis
Full Text:: phosphatase activity and available phosphorus in soil AN ABSTRACT OF THE THESIS OF Sheila J. Nelson for the

Zinc-phosphorus relationships in five plant species

Creator:: Henning, Stanley John
Abstract:: The effects of zinc and phosphorus treatments on five different plant species were investigated in a greenhouse experiment. A second greenhouse experiment extended these investigations in sweet corn over a broad range of phosphorus treatments with and without adequate zinc nutrition to study phosphorus induced zinc deficiency. The plant responses...
Resource Type:: Masters Thesis
Full Text:: Shano soil was mark- edly influenced by zinc deficiency. At the P1 rate, phosphorus content was

Availability of phosphorus in central Oregon soils in comparison with selected Oregon soils

Creator:: Araos, Jose Fernando
Abstract:: The objectives of this study were to evaluate and compare the availability of native and applied P in Central Oregon pumice soils with that in Willamette valley soils and calcareous soils from Eastern Oregon. The experimental work to meet these objectives included laboratory and greenhouse studies. The removal of P...
Resource Type:: Masters Thesis
Full Text:: solution, soil to solution ratio, and time of shaking. 17 3. Phosphorus fixation by soils during one

Measurement of microbial biomass phosphorus in Oregon soils

Creator:: Claycomb, Peter T.
Resource Type:: Masters Thesis
Full Text:: of soil E. 3. Changes in gravimetric water content of field 61 soils during the sampling period. 4a

The relationships between zinc, iron, and phosphorus in sweet corn

Creator:: Hay, James Ronald
Abstract:: The relationships between zinc, iron, and phosphorus in sweet corn were investigated under field and greenhouse conditions. The soils used in this study (both acid and calcareous) were low in available zinc and phosphorus. The experiments received standard, uniform rates of nitrogen potassium, magnesium, and sulphur. Corn was used as...
Resource Type:: Masters Thesis
Full Text:: treatrnents on soil 435. Both iron and phosphorus contents were greatly increased while the zinc content was

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

Influence of nitrogen and phosphorus on interference between medusahead and squirreltail

Creator:: Young, Kert R.
Abstract:: Restoration of invaded aridlands is required to reduce the exorbitant ecological and monetary losses related to noxious weeds. An understanding of how reduced and increased levels of soil N and P influence interference between medusahead and squirreltail is imperative to understanding how squirreltail may be used in restoration of medusahead...
Resource Type:: Masters Thesis
Full Text:: belowground biomass for 22 weeds increased with increased soil phosphorus (P), suggesting that P may

ScholarsArchive@OSU

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

Phosphorus availability in biosolids-amended soils

Correlation of phosphorus soil tests and forms of inorganic soil phosphorus with crop response and phosphorus uptake from Aiken soils

The influence of phosphatase-producing bacteria on phosphatase activity and available phosphorus in soil

Zinc-phosphorus relationships in five plant species

Availability of phosphorus in central Oregon soils in comparison with selected Oregon soils

Measurement of microbial biomass phosphorus in Oregon soils

The relationships between zinc, iron, and phosphorus in sweet corn

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

Influence of nitrogen and phosphorus on interference between medusahead and squirreltail

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