About the Authors

A. Mark Ibekwe

Mark.Ibekwe@ars.usda.gov

Affiliation United States Salinity Laboratory, United States Department of Agriculture-Agriculture Research Service (USDA-ARS), Riverside, California, United States of America

Shelton E. Murinda

Affiliation Department of Animal and Veterinary Sciences, California State Polytechnic University, Pomona, California, United States of America

Alexandria K. Graves

Affiliation Department of Soil Sciences, North Carolina State University, Raleigh, North Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AMI SEM AKG. Performed the experiments: AMI SEM. Analyzed the data: AMI AKG. Contributed reagents/materials/analysis tools: AMI. Wrote the paper: AMI.