Soil Testing Procedures and Methods

Testing Services « Testing Procedures

Mehlich III Extractable Elements

 

A. Mehlich 1984 Comm Soil Analysis 15:1409-1416
Warncke & Brown NCR 13 1998
Western States PT Program Soil & Plants Methods
S4.0 1997

Ammonium Acetate

Ca, Mg, K, Na

Warncke & Brown, NCP 13 1998

pH

1:1 H20

Watson and Brown, NCR 13 1998
Western States PT Program Soil & Plants Methods
S2.2 1997

SMP Buffer pH

Watson and Brown, NCR 13 1998
Western States PT Program Soil & Plants Methods
S2.3 1997

NO3 and NH4

1N KCL Cd Red

Western States S-3.10 and S-3.50 1997
Gelderman & Beegle NCR 13 1998

Media

Salt Paste

Warncke NCR 13 1998

Soil Paste

Sat Paste

Western States S-1.0 to 1.7 1997

Soluble Salts

1:1 H20

D.A. Whitney NCR 13 1998

Bicarbonate

Paste

Western States S1.3 1997

Ammonium Acetate Ca, Mg, K, Na

1M Na40Ac

Warncke & Brown NCR 13 1998

Calcium Carbonate Equivalent

 

ASTM D4373-84

Chloride

H2O

Western States PT Program & Plant Methods S1.4 1997
Gelderman, Denning, Goos, NCR 13 1998

DTPA

 

Whitney NCR 13 1998
Western States PT Program & Plant Methods S6.1 1997

Cu, Mn, Zn, Fe

   

Organic Matter

LO1(369)

Combs & Nathan NCR 13 1998
Western States PT Program & Plants Methods S4.2 1997

Phosphorous (Bray I)

 

Western States PT Program & Plants Methods S1.4 1997
Frank, Beegle, Denning NCR 13 1998

Phosphorous (Bray II)

(369)

Knucken & Beegle NCR 13 1998

Phosphorous (Olsen)

 

Frank, Beegle, Denning NCR 13 1998
NCR 13 North Central Regional Research Publication NO. 221 (revised) 1998
Western States Lab Proficiency Testing - Soil & Plant Analyt. Methods 1997 V. 4.00
ASTM American Society for Testing and Materials