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Subsurface phosphorus transport and scale dependent phosphorus leaching in alluvial floodplains
(2012-07)
Scope and Method of Study:
Sequential Fractionation and Water Soluble Phosphorus Methods to Investigate Soil Phosphorus in a Long-term Manure Application
(Oklahoma State University, 2011-05-01)
The objectives of this study were to investigate soil P using sequential fractionation, and to evaluate how long-term manure applications affect the amount and of bioavailable P and water soluble P (WSP) levels at multiple ...
Phosphorus Reduction in Runoff Using a Steel Slag Trench Filter System
(Oklahoma State University, 2012-12-01)
Excessive concentrations of phosphorus (P) can lead to the deterioration of surface waters by eutrophication. The objective of this study was to evaluate the performance of a steel slag trench filter system developed for ...
Study on the use of geopolymer composites for nitrogen and phosphorus removal from poultry litter
(2020-12)
With the growing world population, animal agriculture demand in the following years will increase substantially to meet nutritional needs for humankind. An inevitable increase in demand is strongly interconnected with the ...
Improvement of Phosphorus and Heavy Metals Retention in Stormwater Treatment
(Oklahoma State University, 2006-07-01)
The objectives of this study were to find filter media with high phosphorus sorption and adequate hydraulic conductivity for use in bioretention cells, and to evaluate the improvement of heavy metals retention in sandy ...
I. Evaluation of seed treatments and nitrogen on soybean nodulation and grain yield.II. Influence of pre-plant nitrogen and phosphorus on winter wheat grain yield and quality
(2021-05)
Soybeans (Glycine max) are known to form symbiotic relationships with soil microbes and conduct biological nitrogen fixation (BNF). However, only 50-60% of the crop's nitrogen (N) requirement is met through this process. ...
Identification of optical spectral signatures for detecting cheat and ryegrass in winter wheat, and determination of optimum rate and growth stage of foliar applied phosphorus in corn
(2004-07)
Site specific weed management requires the identification of crop and weed species in a mixture. Reflectance spectra were used for the detection of cheat and ryegrass in winter wheat under greenhouse conditions. The three ...
Investigating scale, rainfall-runoff sequences and BMP effects on phosphorus, runoff and sediment yield
(2004-12)
Scope and Methods of Study: 1) Scale effects on phosphorus (P) loss and runoff depth from pastures were investigated by summarizing water quality data from 19 research projects. Spatial (area) and temporal (days after ...