Recommended Chemical Soil Test Procedures for the North Central Region

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For more than a century, soil and plant scientists have been developing methods for determining the levels of plant-available nutrients in soils.

Over the last 30 years, the NCR-13 Soil Testing and Plant Analysis committe members have worked hard at standardizing the procedures of soil testing laboratories with which they are associated. As a result of these activities, the committe arived at the recommended procedures for soil tests.

Keywords

Soil sample preparation
Standard soil scoo
Soil extraction
pH
Lime requirements
Nitrate-nitrogen
Phosphorus
Potassium
Cations
Sulfate-sulfur
Micronutrients
Zinc
Iron
Manganese
Copper
Boron
Chlorides
Soil organic matter
Soil salinity
Greenhouse root media
Laboratory quality assurance program

Pages

SB1001, revised January 1998