Soil Phosphorus Forms from Organic and Conventional Forage Fields

Schneider, Kimberley D.; Cade-Menun, Barbara J.; Lynch, D. R.; Voroney, R. P.

doi:10.2136/sssaj2015.09.0340

Cited by 91 publications

(83 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The NMR delay times were determined based on the ratio of concentrations of P/(Fe + Mn) within the extracts, for example, higher concentrations of paramagnetic ions (e.g. Corrections were made to account for orthophosphate diester degradation by summing the peak areas associated with degradation products (α-and β-glycerophosphate and mononucleotides, degraded from phospholipids and RNA respectively), subtracting this sum from the total monester area, and adding it to the total diester area (Young et al, 2013;Schneider et al, 2016). A temperature of 21 C and a 45 pulse were used, with a pulse delay of 4.5 s. Acquisition time was 0.5 s and 2800-5830 scans (~4-8 h) were collected.…”

Section: Solution 31 P-nmrmentioning

confidence: 99%

Widespread detection of Candidatus Accumulibacter phosphatis, a polyphosphate‐accumulating organism, in sediments of the Columbia River estuary

Watson

Needoba

Peterson

2019

Environmental Microbiology

View full text Add to dashboard Cite

Summary Enhanced biological phosphorus removal (EBPR) exploits the metabolism of polyphosphate‐accumulating organisms (PAOs) to remove excess phosphorus (P) from wastewater treatment. Candidatus Accumulibacter phosphatis (Accumulibacter) is the most abundant and well‐studied PAO in EBPR systems. In a previous study, we detected polyphosphates throughout peripheral bay sediments, and hypothesized that an estuary is an ideal setting to evaluate PAOs in a natural system, given that estuaries are characterized by dynamic dissolved oxygen fluctuations that potentially favour PAO metabolism. We detected nucleotide sequences attributable to Accumulibacter (16S rRNA, ppk1) in sediments within three peripheral bays of the Columbia River estuary at abundances rivalling those observed in conventional wastewater treatment plants (0.01%–2.6%). Most of the sequences attributable to Accumulibacter were Type I rather than Type II, despite the fact that the estuary does not have particularly high nutrient concentrations. The highest diversity of Accumulibacter was observed in oligohaline peripheral bays, while the greatest abundances were observed at the mouth of the estuary in mesohaline sediments in the spring and summer. In addition, an approximately 70% increase in polyphosphate concentrations observed at one of the sites between dawn and dusk suggests that PAOs may play an important role in P cycling in estuary sediments.

show abstract

Section: Solution 31 P-nmrmentioning

confidence: 99%

Widespread detection of Candidatus Accumulibacter phosphatis, a polyphosphate‐accumulating organism, in sediments of the Columbia River estuary

Watson

Needoba

Peterson

2019

Environmental Microbiology

View full text Add to dashboard Cite

show abstract

“…And researchers indicated that the mineralization and degradation of organic matter can cause OP release from soil and sediment. But the mobilization of OP may take longer than Fe-P and result in a lower quantity of P exchange in the short-term, and also the procession was affected by many factors, such as DO and pH (McGill and Cole, 1981;Suzumura and Kamatani, 1995;Rydin 2000;Kraal et al, 2013;Schneider et al, 2016).…”

Section: Sediment P Pollution and P Fraction In Different Riversmentioning

confidence: 99%

Characteristics of phosphorus components in the sediments of main rivers into the Bohai Sea

Shan

et al. 2016

Ecological Engineering

View full text Add to dashboard Cite

“…It is generally now agreed that α-and β-glycerophosphates are degradation products from phospholipids, while most mononucleotides (e.g. adenosine monophosphate) originate from RNA [29,[34][35][36][37]. There has long been an interest in quantifying total orthophosphate monoesters and total orthophosphate diesters in soil; diesters are thought to be more labile, while many monoesters are more recalcitrant due to strong sorption to mineral surfaces [4].…”

Section: P-nmr Spectroscopymentioning

confidence: 99%

“…In addition, activities of the soil enzymes acid monoesterase, alkaline monoesterase and diesterase are commonly measured [4], and linked back to total orthophosphate monoester and diester concentrations in models [e.g., 38]. However, if corrections are not made for degradation products, the M:D and models are of questionable value for predicting mineralization of organic P forms [37].…”

Section: P-nmr Spectroscopymentioning

confidence: 99%

“…Extraction and analytical procedures should also be standardized among research groups, to enhance comparisons of data sets, and all peaks should be identified and confirmed with spiking experiments [29]. Calculations of total orthophosphate monoesters and diesters, and the M:D ratio, should be corrected for diester degradation products [37]. And field replicates need to be analyzed by P-NMR as much as possible, rather than compositing samples, to allow statistical analyses of P-NMR results along with other field data.…”

Section: Future Research Needsmentioning

confidence: 99%

See 1 more Smart Citation

Characterizing phosphorus forms in cropland soils with solution 31P-NMR: past studies and future research needs

Cade-Menun

2017

Chem. Biol. Technol. Agric.

Self Cite

View full text Add to dashboard Cite

Understanding the forms and dynamics of soil phosphorus (P) is essential to maintain agricultural productivity while minimizing environmental risks. Since it was first used on soil extracts in 1980, 31 P-nuclear magnetic resonance spectroscopy (P-NMR) has emerged as the leading technique to characterize extractable soil organic P forms. However, it is still underutilized in agriculture; of the more than 200 soil P-NMR papers published to date, only 44 have been conducted in non-pasture soils used for the production of annual or perennial crops, and only nine of those have linked identified P forms to agronomic parameters such as yield. This paper reviews these prior studies, suggesting gaps in research with respect to cropping systems and geographical regions. In particular, there have been few recent P-NMR studies that have fully identified P forms in African soils, and few studies of permanent crops such as orchards and vineyards. There is a need to link future P-NMR studies of cropping systems to agronomic parameters, and combine P-NMR with other techniques to fully capture P dynamics in cropping systems.

show abstract

Soil Phosphorus Forms from Organic and Conventional Forage Fields

Cited by 91 publications

References 67 publications

Widespread detection of Candidatus Accumulibacter phosphatis, a polyphosphate‐accumulating organism, in sediments of the Columbia River estuary

Widespread detection of Candidatus Accumulibacter phosphatis, a polyphosphate‐accumulating organism, in sediments of the Columbia River estuary

Characteristics of phosphorus components in the sediments of main rivers into the Bohai Sea

Characterizing phosphorus forms in cropland soils with solution 31P-NMR: past studies and future research needs

Contact Info

Product

Resources

About