References
- Flynn, R. (2015). Interpreting soil tests: Unlock the secrets of your soil. College of Agriculture, Consumer and Environmental Sciences (ALCES) Circular 676. https://aces.nmsu.edu/pubs/_circulars/CR676/welcome.html
- Macnack, N., C. K. Bee, B. Amedy, and A. Brian. (2017) Fertilization based on sufficiency, build up and maintenance concept. Oklahoma Cooperative Extension Service. http://npk.okstate.edu/documentation/factsheets/PSS-2266web.pdf
- Mehlich, A. 1984. Mehlich 3 soil test extractant. A modification of the mehlich 2 extractant. Communications in Soil Science and Plant Analysis 15:1409–16. doi:10.1080/00103628409367568.
- NOAA (2017). Gulf of Mexico ‘Dead Zone’ is the largest ever measured. http://www.noaa.gov/media-reslease/gulf-of-mexico-dead-zone-largest-ever-measured
- North American Proficiency Testing Program (NAPT). (2019) The North American proficiency testing program of the soil science society of America. NAPT Program. https://www.naptprogarm.org.
- SAS Institue. 2012. SAS for windows v. 9.4. Cary, NC: SAS Inst.
- Susanne, B., T. Kostas, and M. Ron. 2016. Significant atmospheric aerosol pollution caused by world food cultivation. AGU Journal. http://agupubs.onlinelibrary.wiley.com.
- University of Connecticut (2017). Plant analysis soil nutrient laboratory department of plant sciences http://www.soiltest.uconn.edu/analysis.php
- USDA (2017). 2017 state agriculture overview. https://www.nass.usda.gov/Quick_Stats/Ag_Overview/stateOverview.php?state=Louisiana
- Vitosh, M. L., J. W. Johnson, and D. B. Mengel 1995. Tri-state fertilizer recommendation for corn, soybean, wheat, and alfalfa. Michigan State University, Ohio State University and Purdue University. Extension Bulletin E-2567. http://www.ces.purdue.edu/extmedia/AY/AY-9-32.pdf