Thailand
Table 4.1.2: Fertility Level from Soil Analysis by LDD and USDA standard> 4.1 > 4. > menu


Fertility Level

Organic Matter(%)

Base Saturation(%)

Cation Exchange Capacity

Available P (mg/kg)

Available K(mg/kg)

Point

Low

>1.5

<35

<10

<10

<60

1

Medium

1.5-3.5

35-75

10-20

10-25

60-90

2

High

>3.5

>75

>20

>25

>90

3

Source: Kanchanakool (2000)

Table 4.1.2 Illustrates fertility level of soils by points:

Low fertility = 7 or less

Medium = 7 - 12

High = 13 or more


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last updated: 16 October, 2001