Table 2 Physical and chemical soil characteristics for different soils before starting the crop succession program

Physical characteristics

Sand

Coarse

44.2

45.0

6.7

6.1

Fine

45.8

46.4

14.5

12.8

Total

Sand

89.9

91.3

21.2

18.9

Silt

7.2

6.4

40.3

41.2

Clay

2.9

2.4

38.6

39.6

Chemical characteristics

pH

8.8

8.5

8.2

8.0

EC

0.9

0.8

1.3

2.0

SP

22.0

23.0

54.0

61.0

C/N

11.5

13.5

9.0

21.7

OM

0.6

0.9

1.8

2.1

Available macro-elements, mg/kg

N-NO₃

14.78

16.45

0.6

226.73

N-NH₄

40

44.5

40

44.5

K

49.8

63.4

310.4

793.6

P

24.3

10.6

6.6

8.8

micro-ppm

Fe

2.2

6.1

14.3

11.5

Zn

2.1

2.8

2.8

1.3

S

117.9

125.1

77.9

99.8

Total anions (ml/l)

SO4

7.0

6.7

9.8

21.7

Cl

3.2

3.0

3.9

6.4

HCO3

2.7

2.1

2.6

2.7

Total cations (ml/l)

K+

0.5

0.5

0.3

0.6

Na+

4.3

3.2

4.2

6.2

Mg++

3.1

2.7

3.9

7.7

Ca++

5.0

5.4

7.9

16.2