This page is intended to help you with your “methods” section…
How to measure SOIL pH
- Standard pH method – [LINK 1 – University of Georgia’s Agricultural and Environmental Services Laboratories]
- University of Minnesota Soil Testing Laboratory
How to measure TOTAL NITROGEN (N) in the soil
- University of Minnesota Soil Testing Laboratory
- A method for finding useable nitrogen [Link 1 – an environmental scientist at MadSci.org]
- Kjeldahl method [Link 1 – YouTube video summary done by students] [Link 2 – an environmental scientists at MadSci.org]
How to measure PHOSPHORUS (P) in the soil
- Mehlich 1 method [LINK 1 – University of Georgia’s Agricultural and Environmental Services Laboratories] [LINK 2 -The Southern Cooperative Series Bulletin]
- Mehlich 3 method [LINK 1 -The Southern Cooperative Series Bulletin]
- Bray P 1 method [LINK 1 – University of Minnesota’s Soil Testing Laboratory] [LINK 2 – University of Georgia’s Agricultural and Environmental Services Laboratories]
- Bray and Kurtz P-1 method – [LINK 1 – The Southern Cooperative Series Bulletin]
- Olsen P method [LINK 1 -The Southern Cooperative Series Bulletin] [LINK 2 – University of Minnesota’s Soil Testing Laboratory]
How to measure SODIUM (Na+) in the soil
- Cation Exchange Capacity (or CEC) method – [LINK 1 – Clemson University]
- Neutral 1 Normal Ammonium Acetate procedure – [LINK 1 – University of Georgia’s Agricultural and Environmental Services Laboratories]
How to measure CHLORIDE (Cl-) in the soil
- Colorimetric – Autoanalyzer method [LINK 1 – University of Georgia’s Agricultural and Environmental Services Laboratories]
How to measure IRON (Fe) in the soil
- DTPA method [LINK 1 – University of Georgia’s Agricultural and Environmental Services Laboratories]
- University of Minnesota Soil Testing Laboratory