Readily available water required

Source: NSW Agriculture. kPa is pressure in kilopascals.

Soil texture

Readily available water mm/mm

A

B

C

D

E

-8 to -20 kPa

-8 to -40 kPa

-8 to -60 kPa

-8 to -100 kPa

-8 to -1500 kPa

Sand

35

35

35

40

60

Sandy loam

45

60

65

70

115

Loam

50

70

85

90

150

Clay loam

30

55

65

80

150

Light clay

25

45

55

70

150

Medium, heavy clay

24

45

55

65

140

Column A is for water sensitive crops such as vegetables. Column B is for most fruit crops and table grapes.

Column C is for wine grapes, most perennial pastures and irrigated field crops. Column D is for lucerne, annual pastures and winter cereals. Column E is for crops suitable for new rainfall areas.

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