Audrey Gamble
Audrey Gamble
Ph. D. Graduate Student
Education
  • M.S. Soil Science- 2013, Auburn University, Auburn, AL
    Thesis title: Carbon and nitrogen cycling in a cotton-peanut-bahiagrass rotation.

  • B.A., Chemistry- 2011, Auburn University, Auburn, AL

Research Interests
  • Phosphorus is an essential plant nutrient that is also a common pollutant in aquatic systems such as the Chesapeake Bay and the Delaware Inland Bays’ watershed. Eutrophication caused by increased levels of phosphorus can lead to decreased dissolved oxygen levels and excessive growth of Pfiesteria, which has been linked to fish kills as and human toxicity. The dense poultry industry of southern Delaware produces approximately 300,000 Mg of broiler litter annually. Water sources in proximity to southern Delaware’s poultry industry are particularly susceptible to phosphorus pollution due to application of broiler litter as fertilizer to agricultural soils. A fundamental understanding of soil phosphorus speciation is vital in order to improve forecasting for phosphorus retention and transport in soils. Although the chemistry of phosphorus has been extensively studied, specific mechanisms for phosphorus adsorption to soils remain largely unknown. My research in the Environmental Soil Chemistry group at University of Delaware will use spectroscopic techniques (FTIR and XAS) to elucidate mechanisms of phosphorus bonding in soils. I seek to understand reactivity and transport of phosphorus in soils to determine the mechanisms controlling phosphorus release into the environment.  Understanding how phosphorus is retained by soils will allow for effective identification of management practices to mitigate further loss of phosphorus to the environment.

Refereed Publications

Gamble, A.V., J.A. Howe, C.W. Wood, D.B. Watts, and E. van Santen. 2014. Soil organic carbon dynamics in a sod-based rotation on Coastal Plain soils. Soil Sci. Soc. Am. J. (In Press).

Gamble, A.V., J.A. Howe, D.P. Delaney, E. van Santen, and R.P. Yates. 2014. Iron chelates reduce iron chlorosis in soybean on high pH soils. Agron. J. (In Press).

Li, Y., T.B. Lee, T. Wang, A.V. Gamble, and A.V. Gorden. 2012. Allylic C−H Activations Using Cu(II) 2-Quinoxalinol Salen and tert-Butyl Hydroperoxide. J. Org. Chem. 77:4628-4633.

Presentations

Gamble, A.V., P. Northrup, W. Li, and D.L. Sparks. 2014. Tender energy X-ray absorption spectroscopy for determining phosphorus speciation in soils. Soil Science Society of America International Meeting, Long Beach, CA.

Gamble, A.V., J.A. Howe, and M. Roy. 2014. Carbon storage and greenhouse gas emissions for an integrated crop-livestock system in Coastal Plain soils. American Society of Agronomy International Meeting, Long Beach, CA.

Gamble, A., J. Howe, and D. Watts. 2013. Bahiagrass impact on carbon storage in Coastal Plain soils under peanut-cotton-bahiagrass rotation. American Society of Agronomy International Meetings, Tampa, FL.

Gamble, A. and J. Howe. 2013. Influence of Bahiagrass in Rotation with Peanut and Cotton on Carbon Storage in Southeastern US. American Society of Agronomy Southern Branch Meeting, Orlando, FL.

Gamble, A., R. Prevatt, and J. Howe. 2012. Contribution of a Perennial Forage Grass to Carbon Storage in a Peanut-Cotton-Bahia Rotation in Ultisols. American Society of Agronomy International Meetings, Cincinnati, OH.

Gamble, A. 2012. Iron Chelates and Supplements to Alleviate Iron Chlorosis in Soybean in High pH Soils. American Society of Agronomy Southern Branch Meeting, Birmingham, AL.

Gamble, A., D. Delaney, and J. Howe. 2011. Iron Chelates and Supplements to Alleviate Iron Chlorosis in Soybean in High pH Soils. American Society of Agronomy International Meeting, San Antonio, TX.

Scholarships and Awards

  • Delaware Environmental Institute Fellowship Recipient, Delaware Environmental Institute, Newark, DE, 2014

  • Auburn University Outstanding Master’s Student Award, Auburn University Graduate School, Auburn, AL, 2014

  • A.L. Smith Outstanding Graduate Student Award, Department of Crop, Soil, and Environmental Sciences, Auburn University, Auburn, AL, 2014

  • Environmental Quality Section Outstanding Graduate Student Award, American Society of Agronomy International Meeting, Tampa, FL, 2013

  • First Place, Graduate Student Soils Oral Presentation, American Society of Agronomy Southern Branch Meeting, Orlando, FL, 2013
  • Legcy Environmental Scholarship, Legacy Environmental Services, Montgomery, AL, 2012

 

Contact Information:

Plant and Soil Sciences
University of Delaware
221 Academy St Rm 465
Newark, DE 19711
e-mail: agamble@udel.edu