Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Estimating soil phosphorus requirements and limits from oxalate extract data.

E M D'Angelo1, M V Vandiviere, W O Thom

  • 1University of Kentucky, Soil & Water Biogeochemistry Laboratory, Dep. of Agronomy, N-122 Agricultural Science Building North, Lexington, KY 40546-0091, USA. edangelo@uky.edu

Journal of Environmental Quality
|June 18, 2003
PubMed
Summary

Excessive phosphorus inputs cause eutrophication. A new soil test using oxalate-extractable aluminum and iron accurately predicts phosphorus requirements, helping manage soil fertility and water quality.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Diagenesis of Organic Matter in a Wetland Receiving Hypereutrophic Lake Water: II. Role of Inorganic Electron Acceptors in Nutrient Release.

Journal of environmental quality·2021
Same author

Diagenesis of Organic Matter in a Wetland Receiving Hypereutrophic Lake Water: I. Distribution of Dissolved Nutrients in the Soil and Water Column.

Journal of environmental quality·2021
Same author

Reactions of nitrite with goethite and surface Fe(II)-goethite complexes.

The Science of the total environment·2021
Same author

Fertilizer, tillage, and dairy manure contributions to nitrate and herbicide leaching.

Journal of environmental quality·2005
Same author

Potential nitrification in alum-treated soil slurries amended with poultry manure.

Bioresource technology·2005
Same author

Anesthesia considerations in myelomeningocele repair.

AANA journal·1988

Area of Science:

  • Environmental Chemistry
  • Soil Science
  • Agricultural Science

Background:

  • Excessive phosphorus (P) from fertilizers and manure contributes to freshwater eutrophication via soil solution and runoff.
  • Current methods for assessing runoff P, like soil test P and P sorption saturation, have limitations across diverse soil types and routine application.

Purpose of the Study:

  • To identify easily measurable soil characteristics correlated with soil phosphorus requirements (P(req)).
  • To develop a reliable method for determining soil phosphorus limits (PL) to prevent nutrient runoff.

Main Methods:

  • Determined P(req) for 18 diverse soils using sorption isotherm data, correcting for native sorbed P.
  • Correlated P(req) with the sum of oxalate-extractable aluminum (Al) and iron (Fe).

Related Experiment Videos

  • Calculated PL by subtracting native sorbed P from P(req) to target specific solution P levels.

    • Main Results:

    • P(req) strongly correlated with the sum of oxalate-extractable Al and Fe (R2 > 0.90).
    • Calculated PL values ranged from -92 to 253 mg P kg(-1), indicating P surplus or deficiency.
    • Oxalate extracts of P, Al, and Fe showed potential for determining PL up to 10 mg P L(-1).

    Conclusions:

    • Oxalate-extractable Al and Fe provide a robust indicator for soil phosphorus requirements.
    • The soil oxalate extraction test can be integrated into best management practices for soil fertility and water quality protection.
    • This method offers a practical approach to managing phosphorus inputs and mitigating eutrophication risks.