Agriculture Reference
In-Depth Information
12
CHAPTER
Level 2
Physical properties of soil
Figure 12.1
Rocks
This chapter includes the following topics:
•
Plant requirements
•
Origin of soil
•
Soil formation
•
Topsoil and subsoil
•
Composition of soils
•
Soil texture
•
Soil structure
•
Cultivations
•
Soil water
•
Drainage
•
Applying water
•
Water conservation
