This book allows the user to classify soil based on 208 color samples, 8 hues (7.5R - 5Y), 23 Gley colors, a soil structure ruler, and diagrams and instructions for determining soil color, structure, texture, consistence, and free carbonates. Water-resistent paper allows for use in the field.
Become a SciStarter Ambassador!
SciStarter Ambassador badge logo

Applications for Cohort 4 are open!

Libraries and community organizations need your help to spark excitement for citizen science and keep the momentum going!

The SciStarter Ambassador Program offers FREE training to volunteers ready to make an impact in their communities.

Ready to make a difference? Complete your application by March 14th to join the movement!