Soil Texture

Question 1

With soil texture you can determine the total amount of ____ ____ for the ____ of ____ and ____, and the amount of air and water ____ through the soil

Answer 1

surface area, absorption, water, nutrients, movement

Question 2

How much volume is occupied by soil particles?

Answer 2

approximate 1/2 of total volume of most soils

Question 3

What are the two methods of mechanical analysis based on Stoke’s law?

Answer 3

Hydrometer method
Pipette method

Question 4

Why is a dispersing agent like sodium hexametaphosphate used in soil texture determination?

Answer 4

To prevent clay platelets from sticking together

Question 5

What are loamy soils?

Answer 5

soils that are well suited for cultivation and have a 40% sand and silt content and a 20% clay content.

Question 6

What kind of minerals make up most of sand, silt, and clay particles?

Answer 6

feldspars

Question 7

What is the significance of surface area of particles to fundamental soil processes? +examples

Answer 7

It affects the physical and chemical processes of the soil.

examples :
1) irrigation management
2) ion exchange reaction
3) water retention and movement