A research assistantship is available for a M.S. student interested in 
investigating greenhouse gas 
emissions and soil carbon dynamics within a sustainable dairy forage cropping 
system, beginning in 
the Spring or Fall 2014 semesters.  The objective of the project is to 
determine if reduced nitrogen 
fertilizer additions, in response to innovative crop rotations and manure 
management, result in 
reduced greenhouse gas emissions and increased soil carbon sequestration.  The 
research will 
primarily focus on field measurements and laboratory analysis. The student will 
work jointly with the 
Penn State University College of Agriculture Sciences and the USDA-Agricultural 
Research Service at 
University Park, PA. The assistantship is a half-time appointment with full 
tuition compensation. A 
description of the sustainable dairy forage cropping system project is 
available at: 
http://plantscience.psu.edu/research/areas/crop-ecology-and-management/cropping-systems

Applications should have a BS in an agricultural, environmental, life, or 
physical science field. 
Interested applicants should contact Dr. Curtis Dell (curtis.d...@ars.usda.gov, 
814-863-0984), Dr. 
Heather Karsten (h...@psu.edu, 814-863-3179), or Dr. Doug Beegle (d...@psu.edu, 
814-863-
1016). Application materials for the Penn State graduate program in Soil 
Science or Agronomy are 
available at 
http://ecosystems.psu.edu/graduateprograms/soil-science/masters/procedures-for-
admission and 
http://plantscience.psu.edu/graduateprograms/agronomy/masters/procedures-for-
admission.

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