Agriculture
Resource Management :: Soil :: Soil Rating Chart

Rating Chart for Soil Test Data

Nutrient

Low

Medium

High

Organic carbon

<  0.5 %

0.5 - 7.5%

>  0.75%

Available nitrogen ( N)

<  240Kg/ha

240- 480kg/ha

>   480Kg/ha

Available Phosphorus (P)

<  11.0 Kg/ha

11 – 22 Kg/ha

>   22 Kg/ha

Available potassium ( K)

<  110Kg/ha

110-280Kg/ha

>   280Kg/ha

 

Soil Types

pH

Acids

< 6.0

Normal to Saline

6.0 to 8.5

Tending to become Alkaline

8.9 to 9.0

Alkaline

>   9.0

Total Soluble Salts (Conductivity in milli mhos/cm2)

< 1

Normal

1-2

Critical for Germination

2-4

Critical for Growth of the Sensitive Crops

Above 4

Injurious to most crops