Analysis/procedure Method Reference
Sample Preparation
Plant Tissue Analysis-
P, K, Ca, Mg, Mn, Fe, Al, B, Cu, Zn, Na, Pb, Cd, Ni, Cr, Mo 		ICP Method
  1. Isaac, R.A. and W.C. Johnson, 1985, Elemental Analysis of Plant Tissue by Plasma Emission Spectroscopy: Collaborative Study. JAOAC. 68(3), pp 499- 505.
  2. AOAC Official Method 985.01, in Official Methods of Analysis of AOAC International, 16th edition, Volume I Chapter 3, p. 4.
  3. AOAC Official Method 968.08 D(a), in Official Methods of Analysis of AOAC International, 16th edition, Volume I Chapter 4, p. 23.
Plant Tissue Analysis
Extractable NH4-H 		Colorimetric-Autoanalyzer Method
  1. Mehlich, A. 1953. Determination of P, Ca, Mg, K, Na, and NH4. North Carolina Soil Test Division (Mimeo 1953.)
  2. Methods for Chemical Analysis of Water and Wastes. March 1984. EPA-600/4-79-020. "Nitrogen, Ammonia" Method 350.1 (Colorimetric, Automated Phenate) Storet No. Total 00610, Dissolved 00608.
Plant Tissue Analysis - Extractable NO3-N Colorimetric-Autoanalyzer Method
  1. Dorich, R.A. and D.W. Nelson. 1984. Evaluation of Manual Cadmium Reduction Methods for Determination of Nitrate in Potassium Chloride Extracts. Soil Sci. Soc. Am. J. 48:72-75.
  2. Huffman, S.A. and K.A. Barbarick. 1981. Soil Nitrate Analysis by Cadmium Reduction. Comm. Soil Sci. Plant Anal. 12(1):79-89.
  3. Methods for Chemical Analysis of Water and Wastes, March 1984. EPA-600/4- 79-020. Nitrogen, Nitrate-Nitrite, Method 353.2 (Colorimetric Automated, Cadmium Reduction) Storet No. Total 00630.
Plant Tissue Analysis - Total Nitrogen Combustion Method
  1. Bellomonte, G. A. Constantine, and S. Giammariolo. 1987. Comparison of modified automatic dumas method and the traditional Kjeldahl method for nitrogen determination in infant food. JAOAC 70:227-229.
  2. Colombo, B. And G. Giazzi. 1982. Total automatic nitrogen determination. Am. Lab. 14:38-45.
  3. Sweeney, R. A. 1989. Generic combustion method for the determination of crude protein in feeds:Collaborative Study. JAOAC. 72:770-774.
Plant Tissue Analysis - Total C, S, N Combustion Method
  1. Kirsten, W. J., 1979. Automated methods for the simultaneous determination of carbon, hydrogen, nitrogen, and sulfur, and sufur alone in organic and inorganic materials. Anal. Chem. 51:1173-1179.
Plant Tissue Analysis - Extractable Chloride Colorimetric-Autoanalyzer Method See Soil Analysis - Extractable Chloride.
Cotton Petiole Analysis - Extractable NO3-N Colorimetric-Autoanalyzer Method
  1. Dorich, R.A. and D.W. Nelson. 1984. Evaluation of Manual Cadmium Reduction Methods for Determination of Nitrate in Potassium Chloride Extracts. Soil Sci. Soc. Am. J. 48:72-75.
  2. Huffman, S.A. and K.A. Barbarick. 1981. Soil Nitrate Analysis by Cadmium Reduction. Comm. Soil Sci. Plant Anal. 12(1):79-89.
  3. Methods for Chemical Analysis of Water and Wastes. March 1984. EPA-600/4-79-020. Nitrogen, Nitrate-Nitrite, Method 353.2 (Colorimetric Automated, Cadmium Reduction) Storet No. Total 00630.
Cotton Petiole Analysis - Extractable P, K, Ca, Mg, Zn, Mn ICP Method
  1. Baker, A. S., 1971. A simplified method for determining acetic acid soluble phosphorus in plant tissue. Comm. in Soil Sci. and Plant Anal. 2(3):195-200.