MO5 Soil Technical Note-15

Central Great Plains MLRA Region 5
MO5 Soil Technical Note-15

March 19, 2009

Subject: SOI – Guide for Determining Textural Modifiers

Purpose. To provide the Central Great Plains Major Land Resource Area (MLRA) Office Region 5 (MO5) with a field reference guide and a quick link to a National Soil Survey Center (NSSC) Microsoft (MS) Excel spreadsheet for determining the correct textural class modifiers for soils with multiple sizes of coarse fragments

A link to a MS Excel spreadsheet that calculates the correct textural modifier for soils that contain multiple sizes of coarse fragments can be found in Exhibit 618-11, Table 1, Guide for Determining Rock Fragment Modifier of Texture, of the National Soil Survey Handbook (NSSH). A copy of this spreadsheet can be downloaded onto a field computer.

When a computer is not available, the attached chart can be printed and used in the field as a handy reference when describing soils with many different sizes of coarse fragments. This guide was developed and used in Colorado for many years. It can be printed and carried.


State Soil Scientist/MO Leader

DIST: SS (MO5), MO Leaders – TX – CO – ND – MN – AR

The following document requires Acrobat Reader.

Attachment (PDF; 409 KB)