soil texture triangle worksheet
TRANSCRIPT
INTRODUCTION TO SOILS SOIL TEXTURAL TRIANGLE FACILITATORS: M PAUL | KK MCKENZIE
0
THE SOIL TEXTURAL TRIANGLE
(RULER MUST BE
PARALLEL TO THE CLAY
LINE)
(RULER MUST BE PARALLEL TO THE SILT
LINE)
(RULER MUST BE
PARALLEL TO THE SAND
LINE)
INTRODUCTION TO SOILS SOIL TEXTURAL TRIANGLE FACILITATORS: M PAUL | KK MCKENZIE
1
Practice Exercises
% Sand % Silt % Clay Texture Name
a) 75 10 15 _______________________ b) 10 83 7 _______________________
1. Using your soil texture chart and example, determine the following soil textural class using the percentages given.
% Sand % Silt % Clay Soil Texture example 75 10 15 sandy loam
a) 90 5 5 __________________________ b) 40 45 15 __________________________
c) 15 10 75 __________________________
d) 10 46 44 __________________________
e) 55 10 45 __________________________
2. A sample of soils was screened and the size separates (smaller than 2mm) were determined,
along with the following results:
Sand content (2 – 0.04mm diameter) 140 grams
Silt content (0.05 – 0.002mm diameter) 38 grams
Clay content (<0.002mm diameter) 22 grams
Determine the percentage of the total weight of each soil portion, and using the Soil Texture Triangle,
determine the soil textural class.