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Appearance of fine sand and loamy fine sand soils at various soil moisture condi

Appearance of fine sand and loamy fine sand soils at various soil moisture conditions.

Available Water Capacity = 0.6-1.2 inches/foot:

Percent Available: Currently available soil moisture as a percent of available water capacity.

In/ft. Depleted: Inches of water currently needed to refill a foot of soil to field capacity.

0-25 percent available 1.2-0.5 in./ft. depleted:  Dry, loose, will hold together if not disturbed, loose sand grains on fingers with applied pressure. (Not pictured)

25-50 percent available 0.9-0.3 in./ft. depleted (Figure 1):  Slightly moist, forms a very weak ball with well- defined finger marks, light coating of loose and aggregated sand grains remains on fingers.

Figure 1 - 25 to 50% Available Moisture

 

 

 

 

 




Figure 1

50-75 percent available 0.6-0.2 in./ft. depleted (Figure 2):  Moist, forms a weak ball with loose and aggregated sand grains on fingers, darkened color, moderate water staining on fingers, will not ribbon.

Figure 2 - 50 to 75% Available Moisture

 

 

 

 

 

 
Figure 2

75-100 percent available 0.3-0.0 in./ft. depleted (Figure 3):  Wet, forms a weak ball, loose and aggregated sand grains remain on fingers, darkened color, heavy water staining on fingers, will not ribbon.

Figure 3 - 75 to 100% Available Moisture

 

 

 

 

 

 

Figure 3

100 percent available 0.0 in./ft. depleted (field capacity):  Wet, forms a weak ball, moderate to heavy soil/water coating on fingers, wet outline of soft ball remains on hand. (Not pictured)