Parameters

Experimental soil

Appreciation of soil elements [35]

BSFF

Standard NFU44 051 for organic fertilizers

Texture (%)

Sand

64.65

-

-

-

Silt

18.85

-

-

-

Clay

16.5

-

-

-

Organic elements (%)

Organic matter (OM)

8.62

>6, Very high

90

≥20

Organic carbon (OC)

5

-

45

-

Nitrate (N)

0.28

0.225 - 0.3, High

0.52

<2

C:N ratio

18

14 - 20, Poor quality of organic maters

85

>8

Mineral elements (meq/100 g)

Calcium (Ca)

2.65

<7, Very low

0.39

-

Magnesium (Mg)

1.13

0.5 - 1.5, Low

0.15

-

Potassium (K)

1.06

0.6 - 1.2, High

1.8

<30

Sodium (Na)

0.015

<0.1, Very low

0.055

-

Phosphorus (P)

2.29

<7, Very low

1.08

<30

Cation exchange capacity (meq/100 g)

18.2

10 - 25, Medium

-

-

pH

6.3

6 - 7, Slightly acidic

7.84

= 7