Table 1: Physico-chemical properties of the test soils.

Parameter

Method

 

 

Unit

Value

 

 

 

 

 

 

station site

Farm site

pH

Potentiometric

 

 

01:02.5

6.67

6.29

Exchangeable K

Ammonium Acetate-Flame photometry

 

 

Cmol (+)/kg soil

1.38

5.81

CEC

Ammonium Acetate-Ammonia distillation

 

 

Cmol (+)/kg soil

46.91

34.24

Available S

Monocalcium

phosphate

extract

mg/kg

21.83

25.99

 

Turbidimetry

 

 

 

 

 

Available P

Olsen method

 

 

mg/kg

10.1

4.22

Organic C

Walkley and Black

 

 

%

1.96

1.84

Total N

Kjeldahl

 

 

%

0.18

0.17

Soil Texture

Hydrometer

 

 

%

Sand= 37

Sand=29

 

 

 

 

 

Silt= 12

Silt=30

 

 

 

 

 

Clay= 51

Clay=41

 

 

 

 

Textural class

Clay

Clay

K= Potassium; CEC= Cation Exchange Capacity; S = sulfur; P = Phosphorus; C = Organic Carbon; N= Total Nitrogen